iOS and Android apps
Apps for both platforms, built from one product spec and released together.
Mobile app development for iOS and Android.
Velvy builds iOS and Android apps together with the backend that runs them: accounts, data, APIs, payments, and notifications. The app and the server are built by the same people, so features ship end to end instead of waiting on a handoff between vendors. We take apps from first build to App Store and Google Play release, and keep improving them after launch.
Spec/services/mobile-app-development
Best-fit engagement
Milestone-based hourly
Per milestoneBuilt with
- TypeScript
- Node.js
- PostgreSQL
- Supabase
- Firebase
- Stripe
- Twilio
- OpenAI API
- Anthropic API
- Vercel
Working
Deployed to production
Tested
Automated tests and evals
Observable
Logs, traces, and alerts
What we build
The app, the backend, and everything between.
Backend and APIs
The server, database, and API the app talks to, on Node.js and PostgreSQL, or on Supabase or Firebase.
Accounts and sync
Sign-in, user profiles, and data that stays in step across phone and web.
Payments and subscriptions
Checkout and subscriptions wired to your backend, set up with each app store’s payment rules in mind.
Notifications and messaging
Push notifications, in-app messages, and SMS through Twilio, triggered by what happens in your system.
Store release
Builds, test distribution, store listings, and review submission for the App Store and Google Play.
How we build it
One product, two platforms, one backend.
The stack
- TypeScript
- Node.js
- PostgreSQL
- Supabase
- Firebase
- Stripe
- Twilio
- OpenAI API
- Anthropic API
- Vercel
01
Design the flows
We map the screens and the data each one needs, so the app and the API are designed together.
02
Build the backend early
A stable API and data model first, so the app is built against real endpoints instead of stubs.
03
Test on real devices
Regular test builds on actual phones for you and early users, with feedback folded into each cycle.
04
Release and iterate
Store submission, crash and error monitoring, and a steady release rhythm after launch.
How to engage
Start with Milestone-based hourly.
Mobile work runs well as milestone-based hourly: backend, first test build, and store release as separate milestones you can fund and review one at a time.
We start with paid discovery, never an unpaid test project, so the plan rests on your real requirements.
Milestone-based hourly
Per milestoneHourly work organized into agreed milestones, each with clear acceptance criteria.
Also fits
MVP Build
5–8 weeksIf a web app can prove the idea first, an MVP Build is often the faster path to real users.
Common questions
Mobile app development, answered.
Something else on your mind? Ask us directly at hello@velvy.ai, or book the intro call below.
Do you build for both iOS and Android?
Yes. We build both from one product spec and release them together, so features and fixes land on both platforms at the same time.
Should we start with a mobile app or a web app?
If your users need the phone itself (camera, location, notifications, offline use) or live on their phones all day, start with mobile. If not, a web app is usually faster to build and to change while you learn. We give you a straight recommendation during discovery.
Do you build the backend too?
Yes. We build the API, database, authentication, and admin tools behind the app, so one team is accountable for the whole product rather than two vendors pointing at each other.
Do you handle App Store and Google Play submission?
Yes. We prepare builds, store listings, and review submissions, and fix anything the stores flag. Review timing is set by Apple and Google, so we plan releases with some slack.
Can you add AI features to a mobile app?
Yes. Model calls run on the backend through the OpenAI or Anthropic APIs, which keeps API keys off the device and lets us change models without shipping a new app version.
Related services
All servicesGet started
Bring the messy problem. Leave with a plan.
Book an intro call. Tell us what you’re trying to build or automate, and we’ll tell you plainly whether we’re a fit and what a first engagement would look like.
Prefer email? hello@velvy.ai