# SASER vs KCSDI

The clearest difference is price: KCSDI at Free against SASER's $7.99. KCSDI also leads on update cadence (every 3 weeks vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

KCSDI is free to download; SASER costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SASER ships an update every 6 weeks, KCSDI every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SASER | KCSDI |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 3 MB | 31 MB |
| Requires iOS | 16.2 | **15.5** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ruslan Yusipov](https://appshunter.io/developer/1598799633) | [Chengdu KeChuang Institute of Science and Culture](https://appshunter.io/developer/1690764978) |

## What reviewers say

### SASER

[App page](https://appshunter.io/ios/app/saser/id6445876420)

**In-app purchases:** none


### KCSDI

[App page](https://appshunter.io/ios/app/kcsdi/id6667098118)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SASER free?

SASER costs $7.99, with no in-app purchases.

### Is KCSDI free?

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

### Do SASER or KCSDI have ads?

Neither SASER nor KCSDI shows ads.

### Which is updated more often, SASER or KCSDI?

SASER ships an update every 6 weeks, and KCSDI every 3 weeks. Most recently, SASER was updated on October 30, 2026 and KCSDI on October 25, 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.*