# Kauffman bracket vs DoctorHashes

The clearest difference is in-app purchases: Kauffman bracket at none against DoctorHashes's 3. DoctorHashes's advantage is iOS requirement (13.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. DoctorHashes sells 3 in-app purchases, starting at $10.00 per month. Kauffman bracket asks for nothing beyond the download.

## The numbers

| Metric | Kauffman bracket | DoctorHashes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 6 MB | 46 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Dogukan Beyzade](https://appshunter.io/developer/1845617808) |

## What reviewers say

### Kauffman bracket

[App page](https://appshunter.io/ios/app/kauffman-bracket/id6749131282)

**Features:** macOS Compatibility

**In-app purchases:** none


### DoctorHashes

[App page](https://appshunter.io/ios/app/doctorhashes/id6753905557)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $10.00 | per month |
| Annual Premium | $100.00 | per year |
| Forever Premium Access | $200.00 | one-time |


## Frequently asked questions

### Is Kauffman bracket free?

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

### Is DoctorHashes free?

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

### Do Kauffman bracket or DoctorHashes have ads?

Neither Kauffman bracket nor DoctorHashes shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*