# 年齢・計算 vs ClassKeep

The clearest difference is in-app purchases: 年齢・計算 at none against ClassKeep's 2. 年齢・計算 also leads on iOS requirement (14.0 vs 17.0). ClassKeep's advantage is ads (none vs shown) and update cadence (every 5 days vs every 10 months). On price and device support there is nothing between them.

Both are free to download. ClassKeep sells 2 in-app purchases, starting at $2.99 per month. 年齢・計算 asks for nothing beyond the download.

年齢・計算 ships an update every 10 months, ClassKeep every 5 days. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 年齢・計算 | ClassKeep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 5 days** |
| Size | 3 MB | 4 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hideshi Otsuru](https://appshunter.io/developer/446092368) | [华 龙](https://appshunter.io/developer/1874145984) |

## What reviewers say

### 年齢・計算

[App page](https://appshunter.io/ios/app/id983844358)

**Features:** Vision Pro support

**In-app purchases:** none


### ClassKeep

[App page](https://appshunter.io/ios/app/classkeep-tutor-schedule/id6806250404)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is 年齢・計算 free?

年齢・計算 is free to download, with no in-app purchases.

### Is ClassKeep free?

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

### Do 年齢・計算 or ClassKeep have ads?

年齢・計算 shows ads; ClassKeep does not.

### Which is updated more often, 年齢・計算 or ClassKeep?

年齢・計算 ships an update every 10 months, and ClassKeep every 5 days. Most recently, 年齢・計算 was updated on October 8, 2026 and ClassKeep on October 6, 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.*