# Flat Speedometer vs Keyde

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.

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.

## The numbers

| Metric | Flat Speedometer | Keyde |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flat-speedometer/id900609236/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 66 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axel Backlund](https://appshunter.io/developer/1387836438) | [Zhejiang Chaoji Electric Technology Co.,Ltd.](https://appshunter.io/developer/1490684826) |

## What reviewers say

### Flat Speedometer

[App page](https://appshunter.io/ios/app/flat-speedometer/id900609236)

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.

**Highlights:** 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)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Altitude | $0.99 | one-time |
| Accelerometer | $0.99 | one-time |


### Keyde

[App page](https://appshunter.io/ios/app/keyde/id1490684827)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flat Speedometer free?

Flat Speedometer is free to download, with in-app purchases available.

### Is Keyde free?

Keyde is free to download, with no in-app purchases.

### Do Flat Speedometer or Keyde have ads?

Neither Flat Speedometer nor Keyde shows ads.

### Which is updated more often, Flat Speedometer or Keyde?

Flat Speedometer ships an update every 5 months, and Keyde every 2 months. Most recently, Flat Speedometer was updated on June 3, 2026 and Keyde on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*