What we build with it
Fastlane is what turns a mobile release from an event into a routine. Certificate and provisioning-profile management, build number handling, screenshot generation, TestFlight and Play Console uploads, release notes — scripted once and then run by CI.
The failure mode it removes is specific and common: releases that only one person on the team can perform, because only their machine has the right certificates installed. That is a risk on a two-person team and a genuine problem on a larger one.
Where we have shipped it
The white-label cashback platform is the clearest case. It produces 15+ branded apps from a single Flutter codebase, and each of them needs its own signing identity, bundle identifier, assets and store listing. Releasing that by hand is not realistic — Fastlane makes adding a new branded app a configuration change rather than a day of clicking.
When we recommend it
For any mobile product that will ship more than a handful of times, and immediately for anything multi-target or white-label.
For a single app released twice a year by the same developer, the setup may not pay for itself — though in our experience the release cadence goes up once releasing stops being painful. It pairs naturally with our Flutter work.
