Chorus RF Laptimer vs Mini4WD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chorus RF Laptimer
This application is a time tracking solution for small drone racing events. It is part of an open-source DIY project that provides hardware and software for accurate lap timing.
- DIY drone racing time tracking
- Open-source project
- Lap timing solution
- Hardware and software integration
- GitHub source code available
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The app is an essential part of the DIY "Chorus RF Laptimer" project, which is the open-source time tracking solution for small drone racing events. Full project description including hardware description and the source code is available at GitHub: https://github.com/voroshkov/Chorus-RF-Laptimer
Mini4WD
This app uses your device's camera to automatically time Mini 4WD races. It can track lap times, fastest times, and average times, with manual measurement options available. Customize settings like passing sounds, vibration, and course length for an optimized racing experience.
- Automatic lap timing with camera detection
- Manual measurement option
- Records fastest and average times
- Customizable passing sound and vibration
- Adjustable number of lanes and laps
- Course length setting for speed calculation
- Share race results via Twitter, memo, or email
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It is a timer application that can measure the lap time, fastest time, average time of Mini 4WD with the camera. Manual measurement is also possible. [How to use] 0. From the setting menu, you can set the passing sound, vibration, number of lanes, number of measurement laps, course length, detection sensitivity, unit, etc. 1. Select the number of lanes. If you are not sure, please select 1 lane. 2. Set the number of measurement laps. Measurement will end automatically at the specified number of times. 3. Set the course length. It is used for speed calculation. Even if it is not set, it does not affect the measurement. 4. Secure the device so that the selected lane and course match. Even if it deviates a little, there is no problem as long as it fits within the range where the Mini 4WD can pass. 5. Tap the screen and wait for the Mini 4WD to pass first. 6. Run the Mini 4WD. 7. When the specified number of measurements is taken, the measurement is completed. You can see records from the button at the bottom left. Records can be transferred to twitter, memo app, or email with the Share button. * Long Press to interrupt the measurement and return to the TOP screen. * Manual measurement is possible with the button at the bottom right. It can be used for simple measurement from outside the course. * Detection method The passage judgment of Mini 4WD is regarded as detection when the average brightness of the shooting frame pixels of the camera exceeds the set sensitivity. When the sensitivity is 85, it is detected that the average brightness before and after the frame changes by 15%, When the sensitivity is 90, it is detected that the average brightness before and after the frame changes by 10%, When the sensitivity is 60, it is detected when the average brightness before and after the frame changes by 40%. If you fix the device, the accuracy will increase. Even if the camera shakes without fixing, it will not be erroneously detected unless the brightness changes significantly.
Screenshots
Verdict
The clearest difference is rating: Chorus RF Laptimer at 5.0 against Mini4WD's 4.0. Chorus RF Laptimer also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Chorus RF Laptimer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | Chorus RF Laptimer | Mini4WD |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 23 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Hypercube DOO | Katsuyoshi Konno |
Customer experience
Chorus RF Laptimer
Mini4WD
In-app purchases
Chorus RF Laptimer
No in-app purchases
Mini4WD
No in-app purchases
Questions
Is Chorus RF Laptimer free?
Is Mini4WD free?
Which has better reviews, Chorus RF Laptimer or Mini4WD?
Do Chorus RF Laptimer or Mini4WD have ads?
Which is updated more often, Chorus RF Laptimer or Mini4WD?
Other comparisons
