# 鳥四季の公式アプリ vs Algae

The clearest difference is iOS requirement: 鳥四季の公式アプリ at 9.0 against Algae's 12.0. On price, update cadence, ads 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.

鳥四季の公式アプリ ships an update every 23 months, Algae every 39 months. The most recent releases landed on October 10, 2026 and May 14, 2026 respectively.

## The numbers

| Metric | 鳥四季の公式アプリ | Algae |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 23 months** | Every 39 months |
| Size | 20 MB | 40 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [DAISUKE HIGASHINO](https://appshunter.io/developer/1492843409) | [Masayo Hara](https://appshunter.io/developer/1600624186) |

## What reviewers say

### 鳥四季の公式アプリ

[App page](https://appshunter.io/ios/app/id1492843410)

**In-app purchases:** none


### Algae

[App page](https://appshunter.io/ios/app/algae/id1600624184)

**In-app purchases:** none


## Frequently asked questions

### Is 鳥四季の公式アプリ free?

鳥四季の公式アプリ is free to download, with no in-app purchases.

### Is Algae free?

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

### Do 鳥四季の公式アプリ or Algae have ads?

Neither 鳥四季の公式アプリ nor Algae shows ads.

### Which is updated more often, 鳥四季の公式アプリ or Algae?

鳥四季の公式アプリ ships an update every 23 months, and Algae every 39 months. Most recently, 鳥四季の公式アプリ was updated on October 10, 2026 and Algae on May 14, 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.*