Mobile App Development in San Francisco, CA
Most of what a San Francisco company asks us to build as a mobile app is better off as a progressive web app, and the free audit says so even when it means a smaller invoice. When a real cross-platform build in Flutter or React Native is the right call, we do that too, wired to your own backend rather than a demo environment. Either way the entry point is $2,500, the range runs past $15,000 for a full connected product, and the number gets fixed in writing before the build starts. We're about two hours down the road in Sacramento; most San Francisco engagements run entirely over video, with a visit arranged around a kickoff or a launch if you'd rather have one in person.
Why we lead with a PWA in San Francisco
A progressive web app is a website that behaves like an app: it installs from a link to a home screen icon, works offline for the parts that don't need a live connection, and updates the moment we push a change, with nothing to submit for review. For a client portal or an internal tool, that's usually the better answer, at a fraction of the cost of a store-listed build.
The tradeoff is real and worth saying plainly rather than glossing over. A PWA can't sit in the App Store or Google Play search results, its access to background location and some phone hardware is limited, and reliable push notifications on iPhone are a fairly recent development. None of that matters for a tool your own clients open from a link you send them directly. It matters a great deal for something meant to be discovered by strangers browsing an app store, or for a field app that needs to keep running with the screen off.
When a native build earns its cost
Three situations tip the decision the other way.
The app needs to be discoverable in an app store rather than shared as a link. It needs steady background access to GPS, the camera, or push notifications. Or it has to keep working with the phone locked and no signal at all. Any one of those is a reasonable case for Flutter or React Native instead of a PWA, and we build that version just as often as the lighter one.
The free audit is where we say plainly which one your project actually needs, before either of us has a number to argue about. Plenty of San Francisco founders arrive assuming they need a native build simply because that's what "an app" has meant historically; roughly half the time the audit talks them out of the more expensive version, not into it.
The cost difference isn't small either. A PWA reuses most of the same code that runs the website, so building one is closer to an extension of an existing project than a second product. A native build starts closer to zero: its own project structure, its own release process, its own store listings to maintain going forward. Neither is the wrong choice in general, only the wrong choice for a use case it wasn't built for, and that's the distinction the audit is actually making.
A client portal, built as an app
A lot of what we ship for San Francisco firms, consultancies, agencies, professional practices, isn't a consumer app at all. It's the same portal their clients already use on a laptop, packaged so it opens from an icon on a phone: case or project status, documents, messages, an invoice. No second login, no second codebase to maintain, since it runs against the same backend and the same API as the web version already does.
A representative case, illustrative rather than an actual engagement: a consulting firm turns its existing web client portal into an installable PWA, around $4,500, so clients can check project status from a phone without a second sign-in built from scratch. The real number for a given firm depends heavily on what the existing portal already does, since a portal built on modern, well-documented software costs far less to extend than one nobody has touched in years.
It's not only client-facing work that ends up as an installed app. A number of San Francisco teams ask for the same treatment on an internal tool, a dashboard operations checks throughout the day, an admin panel someone opens dozens of times, again to save the daily friction of typing a URL and logging back in. The build is nearly identical to a client portal; the only real difference is who the audience is and which roles get access to what.
What this costs, PWA or native
A PWA or a narrowly scoped app runs $2,500 to $6,000. Wiring a native or cross-platform app to its own backend, API, and integrations, a CRM, billing, a calendar, moves it to $6,000 to $15,000. A full product with multiple user roles and offline support starts at $15,000, and a free audit sets the exact figure first, before a contract exists.
A portal, packaged as an app.
- A client portal installed as a PWA, no store account needed
- Works on iPhone and Android from one build
- Typically live in 2 to 4 weeks
Native or cross-platform, wired in.
- Flutter or React Native build against your own API
- Billing, CRM, or calendar integration included
- Submitted under your own Apple or Google developer account
Multiple roles, built to grow.
- Client, staff, and admin roles on one backend
- Full monitoring, backups, and a security review
- Shipped in two-week milestones you can log into
Anything smaller than a project bills hourly at $150 to $200. After launch, a support plan runs $300 to $500 a month for a straightforward PWA, or $750 to $1,500 a month for a native app with integrations and a faster response commitment. Both are broken out on the pricing page; the build process itself is covered on the mobile app development page.
Working with a San Francisco team from Sacramento
We're based in Sacramento, about two hours up the road. Most of the engagement, discovery calls, weekly check-ins, the actual build, runs over video regardless of distance, since the work itself happens in a repository and a staging link, not in a conference room. When a project wants a kickoff or a launch day in person, we'll drive down and make it work; plenty of San Francisco clients never ask for that and the project runs the same either way.
Mobile is one of seven things we do, and rarely the only thing a business needs. If the project is really a website, start at web design in San Francisco. For custom software beyond the app itself, see software development in San Francisco. If the process needs AI inside it end to end, that is AI automation in San Francisco.
Start with a free audit
Thirty minutes on what the portal or app has to do, who logs into it, and whether a PWA or a native build actually fits. You leave with a written summary and a price range, whether or not you hire us afterward.
How we buildFrequently asked questions
What San Francisco founders and operators ask before commissioning an app or a portal.
What does an app cost for a San Francisco company?
A PWA or narrow-scope build starts at $2,500. Add a real backend, an API, and integrations and it moves to $6,000 through $15,000. A full multi-role product starts at $15,000. The free audit fixes your actual number before any of that is final.
Who owns the code and the portal once it's built?
You do, in full. Everything sits in your own repository and your own hosting or developer accounts from the start, so nothing about switching developers later depends on staying with us.
Why would you recommend a PWA instead of a real app?
Because for a client portal or an internal tool, a PWA usually does the job at a third of the cost, with no app store review slowing down every update. We say so even when a native build would be the bigger invoice for us.
Can a PWA send push notifications and work offline?
It can do both to a real degree, offline for cached screens and data, and push notifications work reliably on Android and, more recently, on iPhone too. What it can't do is sit in an app store's search results, which only matters if being found there is part of the plan.
Our clients already use a web portal. Why turn it into an app at all?
Mostly for the icon on the home screen and the fewer taps it takes to get back in. If clients are already checking status weekly, an installed PWA cuts that down to one tap and a push notification instead of a bookmark they have to remember.
Tell us what the app or portal needs to do.
A free 30-minute audit, an honest PWA-or-native recommendation, and one price range before you commit to anything.
Or call and text (916) 618-0502. Based in Sacramento, serving San Francisco on-site by arrangement.
Ready to transform your business?
Tell us what you need. We reply the same business day.