We built Primal for Android, one of the
most-used apps on the protocol. Yours is next.
Built and shipped.
For ourselves first, then for you.
Flagship Client Work
Built the Primal Android app, one of the most popular Nostr clients, shipped to thousands of users.
Our Own Products
Finlab and Yogamaster Meditations, both live on the App Store and Play Store. We build for ourselves, not just for clients.
Bitcoin & Nostr
Delivered a cross-platform Bitcoin wallet and a cryptographic remote signer in production.
Hand-Picked Team
University-trained. Personally vetted through real project work. Zero recruiting lottery.
Ready Before You Ship
Our engineers ship for us before they ship for you. By the time they touch your product, they have already shipped production code on Appollo41's own apps.
We trained our engineers.
Now we train our agents.
We bring AI agents onto the team the same way we bring on developers. Each one is onboarded with our skills, a long-term memory, and a profile that sharpens with every project. Trained, not rented.
The engineer stays in the driving seat, shaping what gets built and holding the quality bar. The agent does the typing. Working this way, we delivered a full year of roadmap in three months, with the same craft our clients hire us for.
More and more, the teams we work with want this for themselves.
We have started teaching them how.
Primal
Nostr social client, non-custodial Bitcoin and Lightning wallet, and a NIP-46 remote signer. Production apps across Android and iOS.
Capmo
Offline-first Android app for the construction industry. Appollo41 contributed an embedded developer to Capmo's team.
Finlab
Finance tracking for individuals and businesses, on Android, iOS, and the web. Appollo41's own product.
Domains we know.
Problems we've lived in.
Bitcoin / Lightning / Nostr
Primal: Social client with a built-in wallet. Remote and local Nostr signers.
Finance & Analytics
Finlab: Our own analytics product for individuals and businesses. Android, iOS, web.
Construction
Capmo: Offline-first field app for construction crews. Made for sites with no signal.
Health & Wellness
Yogamaster Meditations: Our team built this end-to-end. iOS, Android, and backend.
Ship real software.
Not prototypes.
Nostr Development
On Nostr since the beginning. We built Primal Android, one of the most-used clients on the protocol. Native clients, NIPs, relay work.
Bitcoin & Lightning Integration
Non-custodial wallets, Lightning payments, Nostr protocol. Production-grade Bitcoin mobile.
Multiplatform Mobile Apps
Android and iOS from one Kotlin codebase for shared logic, native UI on both sides.
Product Discovery & MVP
From idea to App Store on the budget you have. The hard part is scope. We help decide what ships in the first version, and what waits.