Mobile release management is a different discipline from web deployment, and teams that treat it as the same thing learn why during their first serious bug. You cannot roll back: the version on someone's phone stays there until they update, and a meaningful share of users will not update for weeks. Whatever you ship, you live with.
That single fact drives everything else. Staged rollout is not an optional refinement, it is the primary control - release to one per cent of users, watch crash-free rate and your error tracking for a day, then five, twenty, fifty, everyone. Both app stores support this natively and can halt a rollout mid-way, which is the closest thing to a rollback that exists. A release pushed to a hundred per cent immediately has discarded your only safety mechanism.
Feature flags matter more on mobile than anywhere else, precisely because the binary is fixed. A feature shipped behind a remote flag can be disabled without a new build, which converts a serious defect from an emergency release cycle into a configuration change. For anything risky, that is the difference between an afternoon and a fortnight - review times alone mean an emergency build reaches users days after the problem.
Old versions are the constraint nobody plans for. Your API must keep working for the app someone installed a year ago and never updated, which means the same backwards compatibility discipline as any public API: additive change, no removed fields, no narrowed behaviour. Build a mechanism for forced upgrade early - a version check that can block an app below a minimum - because eventually you will need to retire a version, and adding that capability requires an update the affected users are not installing.
Instrument for the fact that you cannot see the device. Crash reporting with symbolication, so a stack trace is readable. Crash-free session rate as the headline health metric, segmented by app version and by OS version. Adoption curves per release, so you know how much of your population is actually on the fix you shipped. Without version segmentation, a serious problem affecting one build looks like a small problem affecting everyone.
Finally, plan around review times rather than hoping. Both stores can take from hours to several days, and rejections happen for reasons that have nothing to do with your code - a privacy declaration, a permission usage string, a screenshot. Submit before you need to ship, keep a release ready rather than starting when something breaks, and never let a marketing date depend on an unpredictable third party's queue.
