iOS
iOS 15.0
10
Releases
105d
Beta Cycle
12d
Avg. Interval
Sep 20, 2021
Public Release
Release History
Beta 1Jun 7, 2021
Beta 2Jun 24, 2021
Beta 3Jul 14, 2021
Beta 4Jul 27, 2021
Beta 5Aug 10, 2021
Beta 6Aug 17, 2021
Beta 7Aug 25, 2021
Beta 8Aug 31, 2021
RCSep 14, 2021
PublicSep 20, 2021
Insights
Historical avg for major releases
100 days, 10.4 betas
Based on 12 previous iOS .0 releases
Cycle vs. platform average
105d (avg: 90d)
15 days longer than the iOS average
Duration ranking
#4 of 17
Middle of the pack iOS beta cycles
Longest gap in this cycle
20 days
Between Beta 2 and Beta 3
Previous .0 releases (iOS)
| Version | Year | Cycle | Betas |
|---|---|---|---|
| iOS 26.0 | 2025 | 98d | 13 |
| iOS 18.0 | 2024 | 98d | 12 |
| iOS 17.0 | 2023 | 105d | 12 |
| iOS 16.0 | 2022 | 98d | 10 |
| iOS 14.0 | 2020 | 86d | 10 |
| iOS 13.0 | 2019 | 108d | 10 |