# Contract Lab vs SkinGrind

The clearest difference is in-app purchases: Contract Lab at none against SkinGrind's 2. Contract Lab also leads on update cadence (every 3 days vs every 6 weeks). SkinGrind's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads there is nothing between them.

Both are free to download. SkinGrind sells 2 in-app purchases, starting at $3.99 per month. Contract Lab asks for nothing beyond the download.

Contract Lab ships an update every 3 days, SkinGrind every 6 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Contract Lab | SkinGrind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Size | 80 MB | 44 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [奇 林](https://appshunter.io/developer/1896582109) | [Tobias Reski](https://appshunter.io/developer/1820219670) |

## What reviewers say

### Contract Lab

[App page](https://appshunter.io/ios/app/contract-lab/id6768622992)

**Features:** iPhone Duo support

**In-app purchases:** none


### SkinGrind

[App page](https://appshunter.io/ios/app/skingrind-cs2-trade-ups/id6782622547)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SkinGrind Premium (Monthly) | $3.99 | per month |
| SkinGrind Premium (Year) | $34.99 | per year |


## Frequently asked questions

### Is Contract Lab free?

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

### Is SkinGrind free?

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

### Do Contract Lab or SkinGrind have ads?

Neither Contract Lab nor SkinGrind shows ads.

### Which is updated more often, Contract Lab or SkinGrind?

Contract Lab ships an update every 3 days, and SkinGrind every 6 weeks. Most recently, Contract Lab was updated on November 5, 2026 and SkinGrind on October 31, 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.*