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How does App Store phased release differ from a Google Play staged rollout when shipping a React Native app update?

level: middleimportance: should knowfreq 40%

answer

  1. fixed schedule vs chosen percentage
  2. seven days, 1% to 100%
  3. phased release covers automatic updates only
  4. halt on Play, pause on Apple
  5. neither can downgrade users

basics

~20 s

App Store phased release spreads an update to auto-updating users over a fixed seven-day schedule you can pause; a Google Play staged rollout reaches a percentage you choose and can halt. Neither downgrades users who already updated.

solid answer

~40 s

Both limit how many users receive a new React Native binary at once, but they work differently. **App Store phased release** follows a fixed seven-day schedule (1%, 2%, 5%, 10%, 20%, 50%, 100%) and applies only to users with **automatic updates** on; anyone can still update manually or download the app and get the new version immediately. You can **pause** it, for up to 30 days in total, or release to everyone early. A **Google Play staged rollout** has no schedule: you pick the percentage of users, raise it when you are confident, and can **halt** it. In both stores, users who already updated keep the new version; to undo a bad release you ship a fixed build with a higher version number.

go deeper

for a junior

Know that both stores can release an update gradually: Apple over a fixed seven-day schedule, Google Play by a percentage you choose.

for a middle

Explain which users each mechanism affects, what pause and halt do, and why neither can downgrade users who already updated.

for a senior

Plan a rollout with checkpoints per step, knowing iOS exposure is not capped by phased release, and pair it with a server-side kill switch for risky features.

for a principal

Design the release pipeline end to end: internal and beta tracks, rollout steps, the metrics that gate each step and who is allowed to halt.

## Why gradual release matters for a React Native app A store update of a React Native app carries both a new native binary and a new embedded JavaScript bundle. A crash in either reaches every user who installs it, so both stores let you release gradually and watch crash and error rates before everyone has the update. ## Side by side | | App Store phased release | Google Play staged rollout | |---|---|---| | Who sets the pace | Apple's fixed schedule | You, in steps you choose | | Schedule | 7 days: 1%, 2%, 5%, 10%, 20%, 50%, 100% | None; any percentage, raised manually | | Which users | Those with automatic updates on | A random share of the app's users | | Manual updates | Get the new version immediately | Follow the rollout percentage | | Stop exposure | Pause, up to 30 days in total | Halt the rollout | | Finish early | Release to all users | Raise to 100% | | Undo for updated users | Not possible | Not possible | ## How App Store phased release behaves - You choose phased release when releasing a version; the seven-day schedule then runs on its own. - It only controls **automatic updates**. A user who opens the App Store and taps Update, or a new user who downloads the app, gets the new version at once. So phased release **reduces** exposure; it does not cap it. - **Pausing** stops the schedule advancing; resuming continues it. Pauses can add up to 30 days. - **Release to all users** ends the phase early when you are confident. ## How a Google Play staged rollout behaves - You release to the production track with a **percentage**, such as 5%. - Play picks users at random; only those see the update. - You **raise** the percentage in steps, for example 5%, 20%, 50%, 100%, on your own timetable. - **Halting** stops more users receiving it. Users who already updated keep the new version. - You can resume a halted rollout, or replace it with a new release. ## What neither store can do 1. **Downgrade users.** A device never installs an older version code or build over a newer one through the store. Getting users back to known-good code means shipping that code again as a **new, higher** build. 2. **Separate JS from native.** A store rollout ships the binary and its embedded bundle together; releasing JavaScript separately is what OTA updates do, which is a different mechanism with its own rollout controls. 3. **Guarantee who is in the sample.** Neither lets you hand-pick production users; testers belong in the internal and beta tracks before production. ## Choosing the Play steps Because Play leaves the pace to you, decide the gates before the release starts: - **Start small**, low enough that a crash on launch affects few users but high enough to produce meaningful crash data within a day. - **Gate each step on metrics** for the new version only: crash-free sessions, JS error rate, and a business signal such as completed logins. - **Wait long enough** at each step to cover a full daily usage cycle, because some flows only run at certain times. - **Name who may halt**, so nobody waits for permission while a crash spreads. ## Before production: internal and beta tracks Gradual release is the last stage, not the first. A typical React Native release runs: - **Internal testing** for the team, with builds available quickly. - **Closed or open beta** on Google Play and **TestFlight** on iOS for a wider group. - **Production** with a staged rollout or phased release. Each stage catches different problems: release-only crashes on real devices, then device and OS spread, then scale. ## The scenario: a bank app's redesigned home screen A bank app ships a redesigned home screen. On Android the team rolls out to 5%, watches crash-free sessions for the new version for a day, then goes to 20% and 50%. On iOS they turn on phased release, knowing that customers who update manually will get the redesign on day one regardless. Because iOS exposure cannot be capped, they also put the redesign behind a server-side flag, so it can be turned off without a new binary. ## Takeaways - Apple: fixed seven-day schedule, automatic updates only, pause. - Play: your own percentages, halt. - Both: no downgrades; fix forward.

  • During an App Store phased release of a React Native app, why might a bug reach more users than the day's percentage suggests?
    Phased release only governs automatic updates. Users who update manually from the App Store, and new users downloading the app, get the new version immediately. So the percentage limits exposure through auto-update only; total exposure can be higher, which is why a server-side kill switch for risky features is still useful.
  • After halting a Google Play staged rollout of a React Native app, how do you get the affected users onto a working version?
    Ship a fixed build with a higher version code and roll it out. Halting stops new users getting the bad release, but those who already updated keep it, and Play will not install an older version code over a newer one. The fix, or the previous code rebuilt with a higher version code, is the only way forward.

Phased release is a dam opening its sluice gates on a fixed timetable while people can still walk across the bridge; a staged rollout is a tap you open a notch at a time and can shut, though water already poured stays poured.

saying these in an interview costs you the question

  • Phased release on the App Store caps total exposure at the day's percentage.
  • Halting a Play staged rollout rolls updated users back to the previous version.
  • You can choose custom percentages for an App Store phased release.
  • A store rollout can ship the JS bundle separately from the native binary.
  • Google Play advances a staged rollout on a fixed schedule by itself.