Oshi Lab is an independent studio that builds software for Apple platforms. It began with an encrypted messenger, and the discipline that project required — doing the work on the device, keeping as little as possible, and being specific about what the software cannot do — is what the studio has carried into everything since.
The work is not a category. A navigation app for European drivers, an adaptive training coach, a daily word game, a screen-capture tool, a rank tracker for other developers: these are separate products with separate audiences, separate roadmaps and separate problems, and they are built that way. What they have in common is a studio, not a template.
The project the studio is named after: an encrypted messenger with no account, no phone number and no address book upload. The infrastructure behind it — the transport, the relay, the mail server — is run by the studio and designed so that there is nothing useful to hand over. It is the hardest thing here and the reason the rest is built the way it is.
oshi-messenger.com →Navigation written for European driving rather than adapted to it: national vignettes announced before the border, tolls and fuel costed into the route so the “cheapest” option is a number in euros, and electric-charge planning that models consumption from your car’s stated figure and the speeds the route implies — a motorway costs about a third more than the label. French first, because that is who it was written for.
waycar-nav →A training coach that starts from the workouts already sitting in Apple Health, whatever recorded them, and builds a week from your own volume. Every prescribed session carries the reason it was prescribed, and the model reports how confident it is, because a fortnight of history is not a season of it.
trainora-site →A decision simulator. You describe what you are weighing; a swarm of simulated agents seeded with deliberately opposing priors argues it out on the device, and you get the strongest case on each side plus a measure of how divided the swarm was. It runs in airplane mode, which is the only reason it is reasonable to type a real decision into it.
orakl-site →Two word puzzles a day, one French and one English, solved by meaning rather than by letters: you are told how close a guess is semantically, not which characters were right. The French and English puzzles use different data because the two languages are not translations of one another.
lexical-site →A mobile-data monitor that keeps home and roaming as two separate pools and warns before an overage rather than reporting one. It is also the clearest example of the studio’s habit of publishing its own limits: iOS does not give an app the carrier’s billed figure, and RoamGuard’s site says so above the fold rather than in the small print.
roamguard-site →A tool for other independent developers: App Store keyword ranks measured across storefronts and kept as history, alongside read-only Apple Search Ads reporting. Written because the studio needed it, and useful mainly to people with the same problem.
contact@oshi-messenger.com
One address for everything: support, privacy and data requests, press, licensing and everything else. Each app also keeps its own support page — linked from its App Store listing and from its entry above — with the troubleshooting that is specific to it.