# OTG CO Leak Detector vs Leather Project Tracker

The clearest difference is in-app purchases: OTG CO Leak Detector at none against Leather Project Tracker's 3. OTG CO Leak Detector also leads on iOS requirement (15 vs 18). On price, ads and device support there is nothing between them.

Both are free to download. Leather Project Tracker sells 3 in-app purchases, starting at $4.99 per month. OTG CO Leak Detector asks for nothing beyond the download.

## The numbers

| Metric | OTG CO Leak Detector | Leather Project Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 13 MB | 11 MB |
| Requires iOS | **15** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Baby Alert International Inc](https://appshunter.io/developer/1722772592) | [Karol Jaworski](https://appshunter.io/developer/1799974477) |

## What reviewers say

### OTG CO Leak Detector

[App page](https://appshunter.io/ios/app/otg-co-leak-detector/id6740924509)

**In-app purchases:** none


### Leather Project Tracker

[App page](https://appshunter.io/ios/app/leather-project-tracker-hide/id6772819956)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide Pro | $4.99 | per month |
| Hide Pro | $39.99 | per year |
| Hide Pro | $39.99 | per year |


## Frequently asked questions

### Is OTG CO Leak Detector free?

OTG CO Leak Detector is free to download, with no in-app purchases.

### Is Leather Project Tracker free?

Leather Project Tracker is free to download, with in-app purchases available.

### Do OTG CO Leak Detector or Leather Project Tracker have ads?

Neither OTG CO Leak Detector nor Leather Project Tracker 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.*