# ESP vs Badass Proof Calc

The clearest difference is in-app purchases: Badass Proof Calc at none against ESP's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ESP sells 1 one-off in-app purchase. Badass Proof Calc asks for nothing beyond the download.

## The numbers

| Metric | ESP | Badass Proof Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 1 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Wuhan FireFrog Technology Co., Ltd.](https://appshunter.io/developer/917083159) | [RONALD JAMES STONE](https://appshunter.io/developer/1896763584) |

## What reviewers say

### ESP

[App page](https://appshunter.io/ios/app/esp-airlink/id6756355176)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| a cup of coffee | $0.99 | one-time |


### Badass Proof Calc

[App page](https://appshunter.io/ios/app/badass-proof-calc/id6771781310)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ESP free?

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

### Is Badass Proof Calc free?

Badass Proof Calc is free to download, with no in-app purchases.

### Do ESP or Badass Proof Calc have ads?

Neither ESP nor Badass Proof Calc 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.*