# Telling Time vs さんすう水族館

The clearest difference is iOS requirement: Telling Time at 15.0 against さんすう水族館's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Telling Time sells 1 one-off in-app purchase and さんすう水族館 sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Telling Time ships an update fortnightly, さんすう水族館 every 10 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Telling Time | さんすう水族館 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 56 MB | 32 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shojiro Yanagisawa](https://appshunter.io/developer/807209011) | [Kosuke Mawatari](https://appshunter.io/developer/1489564137) |

## What reviewers say

### Telling Time

[App page](https://appshunter.io/ios/app/telling-time-clock-forest/id6757105557)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Worlds | $4.99 | one-time |


### さんすう水族館

[App page](https://appshunter.io/ios/app/id6796571918)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| すべての単元 遊び放題(月額) | $1.99 | per month |
| すべての単元 遊び放題(年額) | $19.99 | per year |
| −1の ひきざん ぜんぶあそぶ | $0.99 | one-time |
| かけざんの きほん ぜんぶあそぶ | $0.99 | one-time |
| かずの せん ぜんぶあそぶ | $0.99 | one-time |
| はじめての たしざん ぜんぶあそぶ | $0.99 | one-time |
| かずをかぞえる10〜20まで ぜんぶあそぶ | $0.99 | one-time |
| 1けたのけいさん ぜんぶあそぶ | $0.99 | one-time |
| とけい・じこくとじかん ぜんぶあそぶ | $0.99 | one-time |
| おかいもの・おつり100円と200円 ぜんぶあそぶ | $0.99 | one-time |


## Frequently asked questions

### Is Telling Time free?

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

### Is さんすう水族館 free?

さんすう水族館 is free to download, with in-app purchases available.

### Do Telling Time or さんすう水族館 have ads?

Neither Telling Time nor さんすう水族館 shows ads.

### Which is updated more often, Telling Time or さんすう水族館?

Telling Time ships an update fortnightly, and さんすう水族館 every 10 days. Most recently, Telling Time was updated on October 30, 2026 and さんすう水族館 on October 31, 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.*