# abacus shapes vs KinderLink CheckIn

The clearest difference is ads: KinderLink CheckIn at none against abacus shapes's shown. abacus shapes's advantage is update cadence (every 6 weeks vs every 4 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

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

abacus shapes ships an update every 6 weeks, KinderLink CheckIn every 4 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | abacus shapes | KinderLink CheckIn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 90 MB | 3 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [taijun sawano](https://appshunter.io/developer/1370412660) | [Kinder Kastle](https://appshunter.io/developer/1453131726) |

## What reviewers say

### abacus shapes

[App page](https://appshunter.io/ios/app/abacus-shapes/id1370412661)

**Features:** macOS Compatibility

**In-app purchases:** none


### KinderLink CheckIn

[App page](https://appshunter.io/ios/app/kinderlink-checkin/id1463964889)

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

**In-app purchases:** none


## Frequently asked questions

### Is abacus shapes free?

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

### Is KinderLink CheckIn free?

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

### Do abacus shapes or KinderLink CheckIn have ads?

abacus shapes shows ads; KinderLink CheckIn does not.

### Which is updated more often, abacus shapes or KinderLink CheckIn?

abacus shapes ships an update every 6 weeks, and KinderLink CheckIn every 4 months. Most recently, abacus shapes was updated on November 11, 2026 and KinderLink CheckIn on November 3, 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.*