LapMonitor vs Race Start Signal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LapMonitor
This application pairs with a dedicated device to provide real-time lap timing for RC car races. It supports single or multi-racer configurations, displays live rankings and race data, and announces key events. Race history is automatically saved and can be exported or shared.
- Bluetooth device connection
- Multi-driver race configuration
- Real-time driver ranking
- Speech synthesis for race events
- Detailed lap information
- Automatic race data saving
- Race data export and sharing
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LapMonitor is the companion application of the LapMonitor device, the best lap counter for RC cars. It allows single racer lap timing or multi-racers. It includes the following features: - Connect to a LapMonitor device over Bluetooth; - Configure and start a multi-drivers race; - Display the driver ranking and race data in real-time (number of laps, last lap, best lap…); - Use speech synthesis to announce important race events; - Display detailed laps information for any driver in the race; - Automatically save race data on your device, and you can view the race details later in the Session History screen; - Export race data as a text file; - Share race data with your friend by email, Twitter, cloud file services…
Race Start Signal
This application provides a customizable start signal for miniature car and R/C racing. Easily change the color of the display circles with a simple button press. It's a free alternative for those who don't want to purchase dedicated starting signal hardware.
- Customizable start signal lights
- Simple one-button operation
- Suitable for mini 4WD racing
- Suitable for R/C racing
- Free to use
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This is an app for start signal that can be used for mini 4WD and R/C racing. Just press the start button to use it, and you can change the color of the circles to your liking. If you don't want to pay for a starting signal just to play, please give it a try.
Screenshots
Verdict
The clearest difference is in-app purchases: LapMonitor at none against Race Start Signal's 2. LapMonitor also leads on ads (none vs shown) and ratings volume (14 vs 2). On price, rating, review sentiment and update cadence 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. Race Start Signal sells 2 one-off in-app purchases. LapMonitor asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for LapMonitor against 5.0 for Race Start Signal. That said, the two scores are not equally well evidenced: LapMonitor has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
LapMonitor ships an update every 9 months, Race Start Signal every 5 months. Both last shipped on October 24, 2026.
| Parameter | LapMonitor | Race Start Signal |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (14 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 14 — better | 2 |
| Update frequency | Every 9 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | GY FX | NAOYA ONO |
Customer experience
LapMonitor
Race Start Signal
In-app purchases
LapMonitor
No in-app purchases
Race Start Signal
- Support Developer$0.99
- Remove ads$4.99
Questions
Is LapMonitor free?
Is Race Start Signal free?
Which has better reviews, LapMonitor or Race Start Signal?
Do LapMonitor or Race Start Signal have ads?
Which is updated more often, LapMonitor or Race Start Signal?
Other comparisons
