# Algae vs UNDER the SEA　公式アプリ

Algae and UNDER the SEA　公式アプリ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Algae ships an update every 39 months, UNDER the SEA　公式アプリ every 38 months. The most recent releases landed on May 14, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Algae | UNDER the SEA　公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 38 months** |
| Size | 40 MB | 16 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Masayo Hara](https://appshunter.io/developer/1600624186) | [AKI MAEKAWA](https://appshunter.io/developer/1621208033) |

## What reviewers say

### Algae

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

**In-app purchases:** none


### UNDER the SEA　公式アプリ

[App page](https://appshunter.io/ios/app/under-the-sea/id1621208031)

**In-app purchases:** none


## Frequently asked questions

### Is Algae free?

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

### Is UNDER the SEA　公式アプリ free?

UNDER the SEA　公式アプリ is free to download, with no in-app purchases.

### Do Algae or UNDER the SEA　公式アプリ have ads?

Neither Algae nor UNDER the SEA　公式アプリ shows ads.

### Which is updated more often, Algae or UNDER the SEA　公式アプリ?

Algae ships an update every 39 months, and UNDER the SEA　公式アプリ every 38 months. Most recently, Algae was updated on May 14, 2026 and UNDER the SEA　公式アプリ on May 16, 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.*