Flat Speedometer vs CarSpeedTest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flat Speedometer
This app provides a clear and simple way to view your current speed in various units. It offers a HUD mode for easy in-car viewing and a feature to track your top speed. Additional sensors like accelerometer and altimeter are available via in-app purchases.
- Multiple speed units (mph, km/h, knots, m/s)
- HUD mode for car use
- Top speed tracking
- Ad-free experience
- Accelerometer (in-app purchase)
- Altimeter (in-app purchase)
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Viewing your current speed has never been simpler. With a no-nonsense user interface, this app helps you concentrate on what you really are doing. Ad-free. Measure your speed in various units; miles per hour, km per hour, knots and meters per second. It includes a HUD-mode for easily viewing your speed in the car, without having to look down. A top speed mode helps you to keep track of your highest speed. Additionally, features such as accelerometer and altimeter are available as in-app purchases. Note: Not compatible with iPod Touch or iPad Wi-Fi only.
CarSpeedTest
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Effortlessly track your real-time vehicle speed with one-tap switching between km/h and mph, plus a customizable max speed alert for safer driving. The intuitive interface clearly displays your current and top speeds at a glance, and you can review past data anytime—offering the most immediate and convenient speed-tracking experience.
Screenshots
Verdict
The clearest difference is in-app purchases: CarSpeedTest at none against Flat Speedometer's 2. CarSpeedTest also leads on update cadence (monthly vs every 5 months). Flat Speedometer's advantage is ads (none vs shown) and device support (4 vs 2). On price 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. Flat Speedometer sells 2 one-off in-app purchases. CarSpeedTest asks for nothing beyond the download.
Flat Speedometer ships an update every 5 months, CarSpeedTest monthly. The most recent releases landed on June 3, 2026 and September 18, 2026 respectively.
| Parameter | Flat Speedometer | CarSpeedTest |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 15 |
| Further details — not scored | ||
| Size | 32 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Axel Backlund | Weichen Cheng |
In-app purchases
Flat Speedometer
- Altitude$0.99
- Accelerometer$0.99
CarSpeedTest
No in-app purchases
