192+ iOS apps curated and reviewed
The best bt1 tester apps on iPhone average 3.8★ across 192+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 1.0★ (1) | No | No | Aug 2026 | |
| 2 |  | Free | 4.7★ (789K) | No | No | Sep 2026 | |
| 3 |  | Free | 4.5★ (1.4K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 2.7★ (242) | Yes | Yes | Aug 2026 | |
| 5 |  | Free | 4.6★ (1.5K) | No | Yes | Sep 2026 | |
| 6 |  | Free | 4.4★ (18) | Yes | Yes | Aug 2026 | |
| 7 |  | Free | 3.7★ (15) | Yes | No | Aug 2026 | |
| 8 |  | Free | 1.3★ (41) | No | Yes | May 2026 |
This utility app tests 12V car batteries, providing results on their condition, such as good, bad, or needing replacement. It displays the battery's voltage, volume, and overall health.
Easily test pre-release versions of apps and App Clips. Provide feedback to developers before public launch. Receive invites via email or public link.
Easily test and troubleshoot your game controllers on iOS devices. Visualize controller layouts, test buttons, sticks, and pressure-sensitive triggers. Connect multiple controllers and get help with connections. Offers a premium subscription for an ad-free experience and advanced features.
