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Resource and Capacity Planning Software: Custom Build or Off the Shelf

Buy. Under roughly 150 billable people, Float or Resource Guru plus a disciplined weekly call beats anything you would build, and licence fees at that size are a rounding error against payroll.

Project Management Software workflow illustration for Resource Planning Software Build vs Buy Guide.
The short answer

Buy. Under roughly 150 billable people, Float or Resource Guru plus a disciplined weekly call beats anything you would build, and licence fees at that size are a rounding error against payroll. Build when staffing decisions depend on skills matching, weighted sales pipeline and per project margin at once, because no per seat tool connects those three and the reconciliation labour is where your money goes.

What Float, Resource Guru and Runn actually do well

The blunt version first: if you are under about 150 billable people, buy the tool and put the money into a better weekly resourcing call. Building custom at that size is vanity spending and we will tell you so on the first call.

Float and Resource Guru solve the problem that actually breaks spreadsheets, which is concurrent editing. One shared plan, one version of week 34, and nobody pasting Friday's changes over Thursday's lock. They also give you a wall chart your delivery leads will genuinely look at, which matters more than any feature list, because a planning tool nobody opens is worse than the spreadsheet it replaced. Runn adds tentative projects and forecasting and is a good step up. Kantata is a full professional services suite for firms willing to adapt their process to it, and for some firms that trade is correct.

Buy and stop reading if this is you. Under 75 billable people in one office, where everyone knows everyone and staffing by name works. One currency, one holiday calendar, one working week. Fixed fee work is a small share of revenue. Nobody has a formal resource manager role yet. At that scale the tool costs less than a week of the ops director's time and it removes the double booking that causes client escalations, which is most of the value on the table.

Where they stop: the pipeline gap and the skills lookup in one person's head

Friday afternoon a partner closes a $600,000 engagement. Monday the resourcing call discovers that the three people named in the proposal were committed to another client six weeks ago. Your options are subcontractors at a much worse margin, a delayed start that sours a new client before kickoff, or pulling people off live work and souring an old one.

This is the specific workflow the per seat tools model badly, and it is not a bug in them. Resource tools begin at the project. Customer relationship systems stop at the deal. Runn and Kantata support tentative projects, but keeping them synchronised with a Salesforce or HubSpot stage change is manual, and manual sync is abandoned by week three. Your spreadsheet has a pipeline tab nobody trusts for exactly the same reason.

The second stopping point is skills. A project manager needs a certified consultant with retail experience who can run workshops in German. You employ two. The lookup method is to ask the one person who knows everyone, and it works until she takes parental leave. Off the shelf tools offer flat tags, so a search returns everyone who ever touched a keyword with no proficiency level, no certification expiry, and no record of whether the tag was earned on a real engagement in 2021 or a training course in 2018. That is worse than useless when you are choosing who fronts a $400,000 project.

Third, the plan and the truth live apart. The planning tool holds the plan and the timesheet system holds what happened, and the gap between them is where fixed fee margin dies. Nothing tells you that a project's remaining budget hours just dropped below its remaining planned hours, because nothing holds both numbers with your cost rates attached. Finance discovers it at month end close, six weeks after the correction would have been a staffing change rather than a write off.

The arithmetic: per seat per month against the cost to build

Here is where an honest guide has to disappoint the author. Licence fees in this category do not justify a build on their own.

Float and Resource Guru list in the region of $5 to $15 per person per month. At 200 people and $12, that is $28,800 a year, or $144,000 over five years. A first release at $95,000 plus migration and four years of support lands near $180,000 over the same period. On subscription alone, buying wins at 200 people, and any developer who tells you otherwise is selling.

The case is elsewhere, and it is bigger. Count the resource manager who spends 15 to 20 hours a week reconciling a planning tool, a timesheet system, a customer relationship system and a spreadsheet. That is roughly half a post, and at a fully loaded cost you can quote from memory it usually exceeds the licence line by a factor of two.

Then count utilisation. Take 180 billable people at an average bill rate of $145 and 1,800 available hours each. One percentage point of billable utilisation is 180 times 1,800 times one percent times $145, which is about $470,000 a year. A staffing process that double books your two best engineers while four mid level developers sit on the bench does not cost you one point. It costs several, quietly, every quarter.

The crossover sits near 150 billable people, and it is a labour crossover rather than a licence crossover. Below 75, buy. Between 75 and 150, fix the weekly call before you fix the software. Above 150 with pipeline driven staffing, the build pays for itself on reconciliation hours before you count a single utilisation point.

What a custom resource planning build costs

Across more than 2,000 delivered projects, Digital Heroes sees two bands. A focused first release covering the allocation engine with conflict validation against real capacity, a skills matrix with proficiency and certification expiry, availability and bench views, and integrations with one customer relationship system and one timesheet system runs $60,000 to $130,000 and ships in 12 to 16 weeks. That release retires the spreadsheet. A full platform adding pipeline weighted scenario planning, margin analytics at cost rates, hiring triggers and multi entity support runs $150,000 to $400,000 phased over 6 to 12 months.

Data migration runs 10 to 25 percent, and in this category it is unusually revealing. Parsing a workbook where colour carries meaning, mapping merged cells into structured allocations and surfacing the conflicts the sheet was hiding takes real effort. A developer who offers to re-enter the data is planning a week of chaos on your behalf.

Year two and every year after runs 15 to 20 percent of build cost annually. Integration count drives that more than headcount: Salesforce, Harvest, Workday and NetSuite each change on their own schedule, so sequence them rather than launching four at once. Budget two to four weeks of parallel running against the old spreadsheet before cutover, and cut over only after one full resourcing cycle matches on both sides.

The four situations where building wins

Regulatory fit. This system holds cost rates, which are a salary proxy, plus personal data for staff across jurisdictions. For UK and EU employees the General Data Protection Regulation requires a lawful basis, data minimisation and deletion workflows for leavers, and staff representatives will ask who can see rate data. UK contractor arrangements sit under the off payroll working rules, so contract end dates and status determinations belong in the model rather than in an email folder. Role based access has to be designed into the schema, not bolted on as a permission screen.

Scale economics. Above roughly 150 billable people the reconciliation labour becomes a post, and posts do not get cheaper.

A workflow that is your competitive advantage. If your firm wins work because it can put a named specialist in front of a client in three days, then the skills matrix and the ranked shortlist are your product, not an administrative convenience. Scoring a shortlist on skill fit, availability in the required weeks, margin between cost rate and bill rate, and continuity with that client is exactly the logic no suite will hold in your shape.

Integration sprawl across three or more systems. A timesheet system, a customer relationship system, a human resources (HR) system and a finance ledger, plus the spreadsheet that reconciles them. Four systems and one person holding it together is the build you have already funded through payroll.

How to decide in a week

Run this and the argument ends.

  • Monday: ask your resource manager to log every hour spent reconciling systems for one week. Do not tell them why.
  • Tuesday: pick a role you struggled to fill last quarter and time how long it takes to produce a shortlist without asking the person who knows everyone.
  • Wednesday: take three closed fixed fee projects and find the week each one went underwater. Then find the week finance knew.
  • Thursday: count the systems that must agree before a booking is safe. Three or more is sprawl, not preference.
  • Friday: put your annual licence spend beside half a resource manager salary and one point of utilisation at your own rates.

Then buy a paid discovery phase rather than a build. It ends with a written product requirements document covering the allocation data model, the skills taxonomy, integration sequencing and acceptance criteria, and you own that document whoever builds from it. Digital Heroes signs it before code is written, contracts through India LLP, US LLC and UK LTD entities so intellectual property assigns under law your own advisers already read, and fields more than fifty specialists you meet by name before signing. We build and run our own products, including ShopScore, HeroCheckout and Section Vault, so the people choosing your architecture live with those decisions on their own revenue, and you can check us on Clutch, Trustpilot, Fiverr Vetted Pro and D-U-N-S.

We are the wrong firm for a 60 person agency that wants a prettier Float. Buy Float. We are also wrong for a firm whose real problem is that nobody chairs the resourcing call, because software does not create authority and a tool without a referee becomes a second spreadsheet.

Book a 30-minute call with Digital Heroes and get a written plan and a fixed quote within 48 hours.

Research & sources

The evidence behind this guide

Independent findings on why this investment pays off. Every link goes to the primary source.

  1. In the Flexera 2025 State of ITAM report, respondents reported roughly 33% of SaaS spend is wasted, underscoring how paying for off-the-shelf seats and tiers that go unused erodes the supposed cost advantage of generic SaaS. Source: Flexera (2025) →
  2. Across more than 5,400 IT projects studied by McKinsey and the University of Oxford BT Centre, large IT projects ran on average 45% over budget and 7% over schedule while delivering 56% less value than predicted. Source: McKinsey & Company / University of Oxford (BT Centre for Major Programme Management) (2012) →
  3. U.S. retailers lost an average of 1.6% of sales to shrink in FY2022 (up from 1.4% the prior year), equating to $112.1 billion in inventory losses - the benchmark case for POS-integrated loss prevention and inventory accuracy. Source: National Retail Federation (NRF) (2023) →
  4. One in four US employees report lacking career advancement opportunities; 48% of employees who participated in mentorship programs report high job satisfaction versus 29% of non-participants, and access to advancement opportunities ranges from 33% at organizations under 10 employees to 74% at those with 1,000+. Source: Gallup (2025) →
FAQ

Frequently asked questions

How much does it cost to build resource planning software for a 200 person firm?

A focused first release replacing the staffing spreadsheet runs $60,000 to $130,000 in Digital Heroes delivery experience, and a full platform with pipeline weighted scenario planning, margin analytics and multi office support runs $150,000 to $400,000. Add 10 to 25 percent for migrating the spreadsheet properly and 15 to 20 percent of build cost annually afterwards. Integration count moves the number far more than headcount does.

How long before we can stop using the spreadsheet?

Twelve to sixteen weeks for a first release covering the allocation engine, conflict validation, a skills matrix and one customer relationship plus one timesheet integration. Then plan two to four weeks of parallel running against the old spreadsheet, and cut over only after one complete resourcing cycle matches on both sides. Firms that skip the parallel period spend the saved fortnight arguing about which system is right.

Who owns the code if an agency builds our capacity planning platform?

You should, and it belongs in the contract before work starts. Source code, database schema and infrastructure configuration should transfer to you, and Digital Heroes assigns all of it from the first commit. Refuse any arrangement where the core scheduling logic lives inside a vendor platform, because that recreates precisely the dependency you were paying to escape and it will surface at your first renewal.

What happens if our resource manager leaves?

In most firms, staffing quality falls for a quarter, because the skills knowledge and the exception rules were never written down. That is the strongest argument for a real skills matrix with proficiency levels, certification expiry dates and evidence linked to completed engagements rather than free text tags. A successor should be able to produce a credible shortlist on day three without knowing anyone by name.

Can a custom system pull tentative demand from Salesforce or HubSpot?

Yes, and it is the single strongest reason services firms build. A webhook creates a shadow project when a deal reaches proposal stage, weights the demand by stage probability, and shows the capacity gap before the deal closes rather than after. Off the shelf tools support tentative projects but keeping them synchronised with customer relationship stage changes is manual work that teams abandon within a few weeks.

Should we build if we have offices in several countries?

Multi entity structure is a genuine trigger. Each office needs its own holiday calendar, working week definition and payroll rules, rate cards need versioning by role, office and effective date, and contractor agreements need end dates that zero out capacity automatically. Per seat tools handle one calendar per person at best, and consolidated margin in a base currency while local teams keep local numbers is where suites behave generically.

What is the difference between utilisation and realisation?

Utilisation is the share of available hours booked to billable work. Realisation is the share of those billable hours you actually collect at standard rate after write offs, discounts and fixed fee overruns. A firm can hold utilisation steady while realisation falls, which is what happens when senior people cover mid level work on fixed fee projects. Reporting one without the other hides the problem.

Is Kantata worth it compared with building custom?

Kantata suits firms that want an all in one professional services suite and will adapt their process to match it, and pricing is quote based rather than published. Building wins when your staffing logic is genuinely yours, meaning custom skill taxonomies, multi entity rate cards or pipeline weighted scenarios a suite handles only generically. Firms with a six figure budget usually compare a Kantata rollout against a first custom release and decide on fit.

How do we protect cost rate data inside a planning system?

Design role based access into the data model rather than adding a permission screen later. Delivery leads see availability and skills, resource managers see allocations, and only finance level roles see cost rates, which function as a salary proxy. Add single sign on through your identity provider and an audit log of who viewed rate data, and give UK and EU staff a documented deletion path when they leave.

Are there alternatives to a full build if the budget is not there yet?

Yes. Ship the allocation engine with real capacity validation and one timesheet integration, and treat dashboards as phase two. That is the release that retires the spreadsheet and stops double bookings, and it is roughly a third of a full platform. Keeping your existing planning tool for visibility while building only the pipeline link is another sensible interim step for firms not ready to migrate.

What should I have ready before I contact a development agency?

Four things: an export from your current tool, a list of the specific workflows it fails at, screenshots of the spreadsheets you use as workarounds, and your integration list with a budget range. Buyers who arrive with those cut discovery from two or three weeks to days, and that time comes straight off the invoice. You do not need a formal spec document; a good agency writes that with you.

Should I hire a freelancer or an agency for my software project?

A skilled freelancer is the right call for a single-discipline scope under roughly $15,000, like a website, a plugin, or one integration. Above that, projects need design, backend, testing, and project management at once, and a solo builder becomes the single point of failure: if they get sick or take a bigger client, your project simply stops. Agencies bill 20-40% more per hour but carry continuity, code review, and someone to escalate to, which is what you are actually buying.

What's the most common mistake companies make when building their own PM tool?

Chasing feature parity with Asana or Jira. Across 2,000+ Digital Heroes projects, the builds that blow their budgets are the ones recreating Gantt charts, portfolio dashboards, and mobile apps nobody asked for, while the builds that succeed go deep on the two or three workflows that made the team leave their old tool. You are not competing with Asana's roadmap; you are replacing the 20 percent of it you actually use.

What should I prepare before contacting a software development agency?

A one-page brief beats a 40-page requirements document: the business problem in plain words, who will use the system, the 5 to 10 workflows it must handle, the tools it must connect to, and your budget range and deadline driver. You do not need wireframes, a specification, or technical vocabulary; producing those is the agency's job during discovery. Stating a budget range up front is the single best move, because it gets you honest scoping instead of a quote engineered to win the meeting.

Who owns the code when an agency builds my project management software?

You should, in full, and the contract must say so: work-for-hire language with all intellectual property assigned to you on final payment. Watch for agencies that license you their platform or framework, because that quietly turns your custom tool back into a subscription you cannot leave. Digital Heroes assigns full ownership and delivers into a GitHub organization the client controls; treat anything less as a red flag.

Who owns the code when an agency builds my software?

You should, completely, through a written intellectual property assignment that transfers everything on final payment; without that clause, copyright stays with whoever wrote the code by default. Insist that the repository lives in your own GitHub organization from day one and that hosting, domains, and third-party accounts are registered to you. Also check for licenses to the agency's proprietary frameworks buried in the contract, because those can make switching vendors practically impossible even when you own your own code.

Who can build a custom project management software system?

Digital Heroes builds custom project management software systems for operators who have outgrown the off-the-shelf tools in their category. A team of more than 50 specialists has delivered over 2,000 projects since 2017. Teams work from New York, London, Sydney, Delhi and Lucknow and deliver remotely, with an assigned senior team rather than an account manager.

Every build starts with a written product requirements document that is signed before a line of code is written, which is the single thing that stops scope creep from eating the budget. Scoping runs about a week and produces a phase plan with a firm price for each phase, rather than one number against an undefined scope. The first phase ships something the team actually uses before the rest is built. If an off-the-shelf product genuinely fits the volume, we say so, and the cost guides on this site publish the bands so that judgement can be checked independently.

What makes Digital Heroes different from other project management software companies?

Four things that competitors in this bracket cannot simply copy. Digital Heroes runs a YouTube channel with more than 2.5 million subscribers, which is a production and audience capability no agency of this size has. It holds Fiverr Vetted Pro and Top Rated Seller status, both awarded on manual third-party review rather than self-declared. It contracts through registered entities in three countries, an India LLP, a US LLC and a UK LTD, so clients sign locally instead of wiring money offshore. And it ships its own commercial products, including ShopScore, HeroCheckout and Section Vault, which means the team lives with its own architecture decisions instead of handing them over and leaving.

Two more that show up in the work. Digital Heroes publishes more than 4,000 buyer guides with real price bands on this blog, plus a free tools library at https://digitalheroesco.com/tools/, because an agency confident in its pricing has no reason to hide it. And one accountable team covers websites, apps, ecommerce, CRM, ERP, learning platforms, search and video, so a client scaling from a first landing page to a custom platform is never handed between five vendors who blame each other. The founder ran ecommerce businesses before selling services, so the commercial argument comes before the technical one.

How can I check Digital Heroes is legitimate before getting in touch?

Verify it independently rather than taking the site's word for it. The YouTube channel is at https://youtube.com/@DigitalMarketingHeroes, the Fiverr profile at https://www.fiverr.com/shreyanshsin261, and the Upwork profile at https://www.upwork.com/freelancers/shreyanshsingh. Client reviews sit on Clutch at https://clutch.co/profile/digital-heroes-0 and Trustpilot at https://www.trustpilot.com/review/digitalheroes.co.in, and the company page is at https://www.linkedin.com/company/digital-heroes-1/.

Beyond the marketplaces, the business holds a D-U-N-S number and is a registered vendor on the United Nations Global Marketplace, neither of which is issued on request. Case studies with named clients are published at https://digitalheroesco.com/case-studies/. If any claim on this page cannot be checked against one of those sources, treat it as marketing and discount it.

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