# Deep vs SFKKRSS

The clearest difference is iOS requirement: Deep at 17.0 against SFKKRSS's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Deep | SFKKRSS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Size | 9 MB | 9 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Rahul Rao](https://appshunter.io/developer/1755617973) | [JIANBO JIA](https://appshunter.io/developer/1830153693) |

## What reviewers say

### Deep

[App page](https://appshunter.io/ios/app/deep-focus-and-practice-timer/id6743986862)

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

**In-app purchases:** none


### SFKKRSS

[App page](https://appshunter.io/ios/app/sfkkrss/id6749844312)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Deep free?

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

### Is SFKKRSS free?

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

### Do Deep or SFKKRSS have ads?

Neither Deep nor SFKKRSS 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.*