249+ iOS apps curated and reviewed
If you already know Phone Diagnostics, this is the deeper bench. 249+ diagnostic app for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.8★ (86) | No | Yes | Aug 2026 |
| 2 |  | Free | 3.9★ (33K) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.8★ (32K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | — | No | No | Jul 2026 |
| 5 |  | Free | 4.8★ (37K) | No | Yes | Aug 2026 |
| 6 |  | Free | 3.0★ (1) | No | No | Aug 2026 |
| 7 |  | Free | 4.7★ (9.2K) | No | Yes | Aug 2026 |
| 8 |  | Free | — | No | No | Aug 2026 |
Easily test and check all mobile device functionalities. This app is useful before purchasing a device, sending it for repair, or after receiving it back. It also helps you locate nearby repair shops.
Access personalized solutions for all your Apple products and services in one convenient app. Troubleshoot issues with guided steps, chat with support, manage subscriptions, reset passwords, and find nearby service locations for Genius Bar appointments.
Monitor your car's performance, diagnose engine issues, and view sensor data in real-time. Customize your dashboard with gauges and charts, and reset fault codes. Supports a wide range of vehicles and offers advanced features for specific car brands.
This app provides comprehensive vehicle care and repair information for car and truck owners, DIYers, and technicians. It offers diagnostic capabilities with compatible OBD2 scanners and a vast database of verified fixes from ASE Master Technicians. Users can also access free vehicle maintenance information and schedule repairs.
This app allows Mercury dealer technicians to perform basic diagnostics on SmartCraft® engines. It provides live engine data, fault information, runtime history, and custom data lists. Full functionality requires a license key and a VesselView Mobile module.
This app provides comprehensive system activity information for Apple devices, including detailed insights into hardware, sensors, and network status. It offers privacy controls, customizable widgets, and advanced testing and reporting features through optional in-app purchases.
Manage your healthcare appointments and view medical reports conveniently. This app allows you to find nearby facilities, schedule home sample collections, and track your health progress with historical data visualizations.
Easily book diagnostic appointments for services like X-rays and ultrasounds. Select your nearest location and preferred services to schedule your test. Receive email confirmations for your bookings.
