# C vs SIEVES

The clearest difference is update cadence: SIEVES at weekly against C's every 6 weeks. SIEVES also leads on iOS requirement (15.0 vs 17.0). 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.

C ships an update every 6 weeks, SIEVES weekly. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | C | SIEVES |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 63 MB | 44 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C-Space, OOO](https://appshunter.io/developer/1599721519) | [Sidikov Ibrokhim](https://appshunter.io/developer/1754543048) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-space-network/id1627438817)

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

**In-app purchases:** none


### SIEVES

[App page](https://appshunter.io/ios/app/sieves/id6753124737)

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

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is SIEVES free?

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

### Do C or SIEVES have ads?

Neither C nor SIEVES shows ads.

### Which is updated more often, C or SIEVES?

C ships an update every 6 weeks, and SIEVES weekly. Most recently, C was updated on October 11, 2026 and SIEVES on October 13, 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.*