This application simplifies driveline setup and predicts performance changes from gear ratios and tire size. It offers tools to calculate vehicle speed and RPM variables, aiding in rig planning and performance expectation.






207+ iOS apps & games curated and reviewed
If you already know QingJian Toolbox, this is the deeper bench. 207+ qingjian toolbox apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Jun 2026 | |
| 2 | Free | 3.3★ (3) | No | No | May 2026 | |
| 3 | Free | 4.7★ (69K) | No | No | Aug 2026 | |
| 4 | Free | 4.8★ (6.2K) | No | Yes | Aug 2026 | |
| 5 | $9.99 | 4.2★ (2.1K) | No | Yes | Aug 2026 | |
| 6 | Free | 4.6★ (71K) | Yes | Yes | Aug 2026 | |
| 7 | Free | 4.3★ (80) | No | Yes | Aug 2026 | |
| 8 | Free | 4.2★ (513) | No | Yes | Aug 2026 |










This application simplifies driveline setup and predicts performance changes from gear ratios and tire size. It offers tools to calculate vehicle speed and RPM variables, aiding in rig planning and performance expectation.






This app helps young drivers improve their driving habits through interactive learning modules and trip tracking. Completing the program may qualify users for an auto insurance premium adjustment.


This app automatically tracks your driving trips, providing detailed summaries of your speed, distance, and driving style. It generates shareable images of your trip stats and offers advanced analytics for responsible drivers. Some advanced features require a subscription.


Turn your smartphone into a powerful vehicle monitoring and diagnostic tool. Track engine performance, fuel economy, and instantly diagnose check engine lights. Features advanced dashboards for performance analysis and off-roading.


Experience realistic car driving and parking with a variety of game modes. Customize your vehicles, compete online, and explore open-world maps. Learn driving rules and become a professional driver in this immersive simulator.


Optimize your travel with multi-stop route planning. This app helps drivers, couriers, and professionals save time and fuel by efficiently planning multiple destinations. It integrates with your favorite navigation apps and allows for easy route adjustments.


Optimize your routes with up to 250 stops and get turn-by-turn navigation without leaving the app. Scan addresses from images or add them manually for efficient planning. Ideal for delivery drivers and anyone needing to manage multiple destinations.


Control your vehicle's performance with this app. Monitor real-time engine data with the iDash Pro and enhance throttle response with PedalMonster. Customize acceleration and safety features for a better driving experience.


This app helps drivers track their safety scores, log trips, and earn rewards for good driving. Fleet managers can monitor driving behavior, identify drivers, and send rewards. It also provides vehicle health monitoring and navigation utilities.


Easily calculate axle weights and determine the optimal tandem slide position for your truck. This app helps balance your load for better fuel efficiency and legal compliance, even suggesting adjustments to avoid exceeding weight limits.


This app transforms your smartphone into a driving coach, analyzing behavior and location to provide real-time feedback and alerts. It helps reduce risky driving, improve fuel efficiency, and offers insights for both drivers and managers to enhance safety and operational costs.


Control and monitor your trailer brakes directly from your smartphone. Adjust braking power, sensitivity, and receive diagnostic alerts. Offers manual override for enhanced safety and stores personalized settings for multiple vehicles.


Design and simulate freeway interchanges using intuitive finger-drawing controls. Optimize traffic flow and prevent congestion by strategically planning road layouts. Experience the role of a freeway engineer in a hands-on simulation.


Record and analyze your driving performance with detailed car data and video. Features automatic lap timing, custom track creation, and community sharing of driving experiences. Optimize your performance with in-depth post-drive analysis.


This app personalizes auto insurance rates based on your driving habits. The safer you drive, the more you can save. It provides a driving score and highlights areas for improvement, promoting road safety and financial savings.


This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.


Easily log and track your driving practice hours. This app provides detailed analytics on driving conditions, supports GPS route tracking with metadata, and offers skill checklists and practice suggestions. Export your logs to PDF for easy record-keeping.


This app helps off-road vehicle drivers calculate critical metrics for tackling any terrain. It analyzes approach angles, traction, winch loads, tire pressure, and water fording depth with detailed formulas for safe navigation.


This app provides comprehensive fleet and asset management solutions. It allows for real-time vehicle and equipment tracking, automated mileage logging, and detailed reporting. Enhance driver behavior and manage expenses efficiently with its robust feature set.