Your crew app needs to work in a Wairarapa gully with no signal, and a template builder can't do offline

No-code builders assume constant connectivity and a generic listings model. A Wellington location crew loses signal in the hills and still needs the call sheet, map, and gear log, plus native camera and GPS. That requires offline-first architecture a template app can't provide.

The app stores what the crew needs on the device and queues their changes. When signal returns, a conflict-aware sync reconciles edits so two people working offline don't overwrite each other. Getting that reconciliation right is the hard part and where build quality shows.

Most crews mix devices, so usually yes. Cross-platform frameworks reduce the cost of covering both, but it's still more than a single-platform no-code app, which is part of why custom is a real budget decision.

NZD 80,000 to 320,000 depending on offline complexity, native features, and backend integration. A single-platform offline app sits at the low end; a full cross-platform build with system integration reaches the top.

App Store and Play Store review, OS updates, and device changes are a permanent commitment. Budget for ongoing maintenance, because an app left untouched breaks within a year of OS releases.

You should own the source code outright, and the contract must say it plainly with an intellectual property assignment that transfers ownership on final payment. Watch for agreements that only license the code to you, keep it in the agency's repository, or register the Apple and Google developer accounts under the agency's name. Insist on code delivered into a repository you control from week one, not at final handover.

Internal and operations apps pay back fastest, typically inside 12 to 24 months across Digital Heroes projects, because the savings are countable: hours of manual entry removed, errors avoided, jobs scheduled tighter. Consumer apps are slower and riskier because payback depends on acquisition costs you only partly control. Before building, write down the one number the app must move, bookings per week or support calls per day, and have the agency design around it.

Apple can reject it, depending on the tool and how generic the result is. Review guidelines 4.2 and 4.3 reject apps with minimal functionality or apps generated from commercial templates that duplicate thousands of others, which catches thin website wrappers and unmodified template apps. Tools that compile to real native code, FlutterFlow being the main example, pass review routinely as long as the app itself does something substantive.

Almost always yes, through CSV exports or the vendor's API, and migration should be scoped as its own workstream with field mapping, a dry run, and a planned cutover window rather than an afterthought. The real time sink is rarely moving the data; it is cleaning it, since years of duplicates, free-text fields, and inconsistent formats surface all at once. Pull a full export from your current vendor before committing to anything new, because some SaaS plans restrict exports on lower tiers.

Ask for a mainstream stack: Flutter or React Native for the app, or Swift and Kotlin if you go native, with a backend on widely hired technology like Node.js and PostgreSQL. Stack choice matters less for features than for who can maintain the code later, and every option above has a deep hiring pool. Refuse agency-proprietary frameworks and platforms only that vendor understands, since they turn every future change into a captive negotiation.

Ask to speak with two past clients whose projects resemble yours in size and industry, and ask exactly who will write your code, since some agencies sell senior faces and deliver junior or subcontracted hands. Demand a written specification with acceptance criteria before any fixed price, and check that their portfolio links to products that are actually live. An instant quote given without questions about your workflows is the clearest warning sign there is.

Ask for three apps they built that are live in the stores right now, then download them and read the recent reviews yourself. Ask exactly who will work on your project, because some agencies sell with senior staff and deliver with juniors or subcontractors, and request one past client you can call. An agency that stalls on any of those three requests is answering your question.

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.

A one-page brief beats a formal specification: the problem the app solves, who will use it, the 10 to 15 features version one must have, two or three apps you want it to feel like, and your budget range and deadline. You do not need wireframes or a technical document; producing those is what the agency's discovery phase is for. A written feature list also makes quotes comparable, because every vendor is finally pricing the same thing.

Discovery is a short paid phase, usually one to three weeks, where the agency turns your idea into wireframes, a technical plan, and a firm estimate. It is worth paying for on anything nontrivial because it surfaces scope problems while they cost hundreds instead of tens of thousands. It also produces a portable asset: a good discovery document lets you take the project to any competent team, which keeps your agency honest on price.

A typical agency team is four to six people: a project lead, a designer, one or two mobile developers, a backend developer, and a tester, most of them part-time on your project. A lean first version can ship with three. Be skeptical of one person claiming to cover design, mobile, backend, and testing alone on a complex app; something on that list is being skipped, and it is usually testing.

Your data can move, but your users' passwords cannot. Platforms like Bubble let you export records through CSV files or their API, but password hashes never leave the platform, so a migration needs a password reset or email login flow for every existing user. Plan the export before you hit the platform's pricing or capacity ceilings, because migrating under pressure is how data gets lost.

Launch the minimum viable product, because no app is ever complete and real store reviews reshape a roadmap faster than any internal debate. In Digital Heroes delivery experience, a focused first release with five to eight core features runs 40 to 60% less than the founder's full wish list and ships months sooner. The discipline is choosing the one job the app must do perfectly and deferring everything else to updates.

Across 2,000+ Digital Heroes projects, a small-business app typically lands between $20,000 and $60,000 for one platform with a modest backend, and a two-platform build with payments and custom logic starts near $90,000. The biggest cost driver is not screen count but backend complexity: user accounts, admin panels, and integrations. If the budget is under $15,000, test the idea on Bubble or FlutterFlow first instead of forcing a stripped-down custom build.

Digital Heroes builds custom mobile app systems for operators who have outgrown the off-the-shelf tools in their category. The work is delivered remotely: our engineers work from Delhi and Lucknow, leadership is in New York, and some team members live in London and Sydney and work remotely from there. We have no office in Wellington. You can chat with the team directly, and every form gets an email reply within 24 hours.