Local-First Software Development You Actually Own
We build local-first, privacy-first software: apps that work offline, keep user data on the device, and don't depend on a server to stay running. Your data lives where your users are, syncing only when and how you decide. You own the code and the architecture outright, with no rented platform sitting between you and your customers.
What local-first actually means
Local-first means the app's source of truth lives on the user's device, not in someone else's cloud. The app reads and writes locally first, so it stays fast and fully usable with no signal, on a plane, or in a basement. When a network is available, changes sync in the background. The result is software that feels instant and keeps working when the internet doesn't.
Offline-first app development that holds up
Building offline-first is mostly about being honest with the hard parts: local storage, conflict resolution when two devices edit the same thing, and sync that recovers cleanly after days offline. We design the data model around merges from the start rather than bolting sync on later. We use proven local stores (SQLite, Core Data, Room) and CRDT- or log-based sync where it fits, and we test the ugly cases: partial syncs, clock skew, and reconnects after long gaps.
Privacy-first by architecture, not policy
The strongest privacy guarantee is data that never leaves the device in the first place. We default to keeping personal and sensitive data local, encrypting it at rest, and sending only what a feature genuinely requires off-device. When sync or backup is needed, we lean toward end-to-end encryption so even your own servers can't read user content. Privacy becomes a property of how the software is built, not a paragraph in a privacy policy.
When local-first is the right call (and when it isn't)
Local-first shines for apps with a single primary user per dataset, strict privacy needs, spotty connectivity, or a founder who doesn't want per-user server costs scaling forever. It's a poorer fit when many users must edit shared data in real time with strong central authority, or when heavy server-side computation is unavoidable. We'll tell you plainly which camp your product is in before we write code.
You own the code and the data path
Every project ends with a clean source-code handoff: the repository, the build setup, and documentation on how sync, storage, and encryption work. There's no proprietary backend you have to keep paying us for to keep the app alive. If you bring on another team later, they get a codebase they can read and run, and a data architecture that isn't locked to any one vendor.
Frequently asked questions
- What is local-first software development?
- It's an approach where the app keeps its primary copy of the data on the user's own device and works fully offline, syncing to a server only as a secondary step when a connection is available. That makes apps fast, reliable without a network, and easier to keep private, since data doesn't have to live in the cloud to be usable.
- How is local-first different from a normal app with offline caching?
- Offline caching usually treats the server as the real source of truth and the cache as a temporary copy, so the app degrades or breaks when offline. In a true local-first app, the device is the source of truth, every action works offline by default, and sync is built to merge changes from multiple devices rather than just refill a cache.
- Can a local-first app still sync across devices and share data?
- Yes. Local-first doesn't mean isolated. We build sync so a user's devices stay consistent, and we can support sharing or multi-user collaboration where it makes sense, often with end-to-end encryption so the sync server moves data without being able to read it. The difference is that sync is layered on top of an app that already works on its own.
- Do we still own everything if you build the backend and sync layer?
- Yes. We hand over the full source code for both the app and any sync or backup service, along with documentation on the data and encryption design. There's no proprietary platform you're locked into, and you can host, modify, or hand the code to another team whenever you choose.
Have something worth building?
Tell us what you're building — you'll hear back from the person who'd actually write the code, usually within a day.