# Big Speedometer vs Explorer

The clearest difference is in-app purchases: Explorer at none against Big Speedometer's 3. Big Speedometer's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Big Speedometer sells 3 in-app purchases, starting at $2.99 per 3 months. Explorer asks for nothing beyond the download.

## The numbers

| Metric | Big Speedometer | Explorer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 57 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [D Healy Technologies Limited](https://appshunter.io/developer/1882275004) | [James Bolderson](https://appshunter.io/developer/1885250665) |

## What reviewers say

### Big Speedometer

[App page](https://appshunter.io/ios/app/big-speedometer/id6760007374)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Month | $2.99 | per 3 months |
| Yearly | $4.99 | per year |
| Lifetime | $2.99 | one-time |


### Explorer

[App page](https://appshunter.io/ios/app/explorer-device-sensor-data/id6787770404)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Big Speedometer free?

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

### Is Explorer free?

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

### Do Big Speedometer or Explorer have ads?

Neither Big Speedometer nor Explorer shows ads.

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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.*