Flat Speedometer vs Keyde
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.
Keyde
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Function description: 【Data Display】 -Real-time speed display -Real-time power display -Real-time mileage display -Real-time power display -Real-time gear switching -average speed -Maximum speed -Riding time - Mileage for this trip -Average power -Motor temperature 【parameter settings】 -Wheel diameter setting -Voltage settings -Maximum speed -Maximum power -Speed unit 【Basic Settings】 -The screen is always on -Switch between left and right hands -Night mode -language settings -Change vehicle 【Social function】 -Cycling charts
Screenshots
Verdict
The clearest difference is in-app purchases: Keyde at none against Flat Speedometer's 2. Flat Speedometer's advantage is iOS requirement (9.0 vs 15.1). On price, update cadence, ads and device support 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. Keyde asks for nothing beyond the download.
Flat Speedometer ships an update every 5 months, Keyde every 2 months. The most recent releases landed on June 3, 2026 and September 14, 2026 respectively.
| Parameter | Flat Speedometer | Keyde |
|---|---|---|
| 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 | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 32 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Axel Backlund | Zhejiang Chaoji Electric Technology Co.,Ltd. |
In-app purchases
Flat Speedometer
- Altitude$0.99
- Accelerometer$0.99
Keyde
No in-app purchases
