# Speedometer Simple vs Head Knocker

The clearest difference is in-app purchases: Head Knocker at none against Speedometer Simple's 5. Head Knocker also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Speedometer Simple's advantage is chart position (#22 vs unranked). On price and device support there is nothing between them.

Both are free to download. Speedometer Simple sells 5 in-app purchases, starting at $4.99 per 7 days. Head Knocker asks for nothing beyond the download.

## The numbers

| Metric | Speedometer Simple | Head Knocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (129K ratings)](https://appshunter.io/ios/app/speedometer-simple/id939507215/reviews)** | — |
| Number of ratings | **129K** | — |
| Positive reviews | 58.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#22** | — |
| Size | 77 MB | 20 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [WATT APPS](https://appshunter.io/developer/1673514420) | [Kasha Amplifiers Inc](https://appshunter.io/developer/1585006183) |

## What reviewers say

### Speedometer Simple

[App page](https://appshunter.io/ios/app/speedometer-simple/id939507215)

**Currently charting:** #22 Top Free · Navigation, #28 Top Grossing · Navigation (US App Store)

This app uses your phone's GPS to display your current speed accurately. It supports multiple units, shows traveled distance, and offers optional city names and a compass. You can also record trip statistics like maximum speed and distance.

**Highlights:** Accurate GPS speed tracking, MPH, KM/H, and knots support, Displays traveled distance, Optional city name and compass, Records trip statistics, Customizable interface colors

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Speedometer Premium | $4.99 | per 7 days |
| Speedometer Premium | $4.99 | per 7 days |
| Speedometer Premium | $19.99 | per year |
| Speedometer Premium | $19.99 | per year |
| Remove Ads | $9.99 | one-time |

**What reviewers like**

- 👍 Accurate speedometer
- 🚀 Helpful for vehicles without built-in speedometers
- 💡 Useful for tracking mileage and maintenance
- 👍 Clean and simple interface
- 👍 Customizable color schemes

**What reviewers complain about**

- 🐛 Occasional GPS signal issues
- 🐛 Inconsistent data synchronization
- 🐛 Inaccurate location/city information
- 🔋 Drains battery when running in the background
- 🔒 Concerns about privacy and data usage

**Reported bugs**

- Speed not displayed when screen is locked or app is in background
- Occasional crashes and freezes
- Inaccurate speed readings at times

**Requested features**

- Add full-screen map option
- Implement a 'pause' feature for recordings
- Allow customization of fonts and colors
- Integrate speed camera and red light detection
- Provide a widget and Apple Watch companion


### Head Knocker

[App page](https://appshunter.io/ios/app/head-knocker/id1636548560)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Speedometer Simple free?

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

### Is Head Knocker free?

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

### Do Speedometer Simple or Head Knocker have ads?

Speedometer Simple shows ads; Head Knocker does not.

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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.*