# シカクナンバーズ vs Sum Link

The clearest difference is in-app purchases: シカクナンバーズ at none against Sum Link's 2. シカクナンバーズ also leads on update cadence (every 2 days vs every 10 days) and device support. On price and iOS requirement there is nothing between them.

Both are free to download. Sum Link sells 2 one-off in-app purchases. シカクナンバーズ asks for nothing beyond the download.

シカクナンバーズ ships an update every 2 days, Sum Link every 10 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | シカクナンバーズ | Sum Link |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | **Every 2 days** | Every 10 days |
| Size | 74 MB | 25 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Rikuto Hosaka](https://appshunter.io/developer/1621064356) | [东晗 于](https://appshunter.io/developer/1733374642) |

## What reviewers say

### シカクナンバーズ

[App page](https://appshunter.io/ios/app/id6450410308)

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

**In-app purchases:** none


### Sum Link

[App page](https://appshunter.io/ios/app/sum-linkconnect-and-sum/id6760685335)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Infinite Focus | $0.99 | one-time |
| Elite Solver Bundle | $1.99 | one-time |


## Frequently asked questions

### Is シカクナンバーズ free?

シカクナンバーズ is free to download, with no in-app purchases.

### Is Sum Link free?

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

### Which is updated more often, シカクナンバーズ or Sum Link?

シカクナンバーズ ships an update every 2 days, and Sum Link every 10 days. Most recently, シカクナンバーズ was updated on October 30, 2026 and Sum Link on October 24, 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.*