App development in Los Angeles, with a working demo in week one
Impervum is an app development studio in Los Angeles with a senior team. We build native iOS and Android apps and take them through App Store review: a working demo on your real workflow in week one, launch in about four weeks, a fixed quote up front, and the code is yours.
Book a 20-minute call →Updated 2026-11-05
What it does
- Native iOS (Swift) and Android apps, plus the web admin and backend behind them
- Booking, payments, maps, push notifications, wearables and health data
- App Store and Google Play submission and review, handled for you
- Takeovers of prototypes built in no-code or AI builders that need to become a real app
- Support after launch from the same team that built it
In production: Three client apps live in the App Store
An at-home beauty booking app where clients pick a stylist and a time and the stylist comes to them; a booking app for a barbershop chain; and a training app for a professional boxer that reads sleep from the Oura ring.
3 apps in the App StoreBooking, payments, wearablesClient names under NDA where asked
How we build it
- Day 1A 20-minute callYou tell us what's slow or missing. We tell you honestly whether software fixes it.
- Day 2–3Scope and fixed quoteA written scope and a fixed price before any work starts.
- Week 1A working demoRunning on your real workflow. Not slides, not a mockup.
- Weeks 2–4LaunchProduction build, App Store, payments, your domain. The code lives in your repository from day one.
- AfterWe keep it aliveMonitoring, fixes and new features, by the people who built it.
Custom vs off-the-shelf vs a freelancer
| Built with Impervum | Off-the-shelf SaaS | Freelancer | |
|---|---|---|---|
| Time to first working version | Week one | Not applicable | Varies |
| Fits your exact workflow | Built around it | You adapt to it | Depends on the person |
| Who owns the code | You | The vendor | Often unclear |
| Price | Fixed quote | Monthly per seat | Hourly |
| Support after launch | The team that built it | Ticket queue | If they are available |
Questions
- How fast can you ship?
- After a 20-minute call we send a written scope and a fixed quote within two to three days. You see a working demo on your real workflow in week one, and most projects go live in about four weeks.
- Who owns the code?
- You do. The code lives in your repository and every account, from the App Store to the servers, is in your name from day one.
- Is the price fixed?
- Yes. You get a written scope and a fixed quote before work starts. No hourly meter and no surprise invoices.
- Do we need to meet in person in Los Angeles?
- Not necessarily. We are based in Los Angeles and happy to meet, but most clients work with us over calls and a shared demo link.
- Can you take over an app someone else started?
- Yes. We review what exists, tell you honestly what is worth keeping, and move it into a codebase you own.
Related
Start
Tell us what you want to build or fix.
A founder replies within one business day to set up a 20-minute call. You get a written scope and a fixed quote before any work starts.
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