# ABYSEA vs Mendaco regression

The clearest difference is in-app purchases: ABYSEA at none against Mendaco regression's 1. ABYSEA also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Mendaco regression sells 1 one-off in-app purchase. ABYSEA asks for nothing beyond the download.

ABYSEA ships an update every 2 weeks, Mendaco regression every 2 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ABYSEA | Mendaco regression |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 219 MB | 88 MB |
| Requires iOS | **11.4** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Toylogic Inc.](https://appshunter.io/developer/492035778) | [Takashi Uno](https://appshunter.io/developer/1589995081) |

## What reviewers say

### ABYSEA

[App page](https://appshunter.io/ios/app/abysea/id1575697408)

Embark on a thrilling underwater exploration mission to destroy a core on a mysterious planet. Manage your limited oxygen supply while uncovering secrets and battling formidable enemies. This game offers a complete experience without any in-app purchases or ads.

**Highlights:** Underwater exploration, Oxygen management, Core destruction mission, Item discovery, Enemy battles, Uncover planet mysteries

**In-app purchases:** none


### Mendaco regression

[App page](https://appshunter.io/ios/app/mendaco-regression/id6466181445)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads & Double the reward | $1.99 | one-time |


## Frequently asked questions

### Is ABYSEA free?

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

### Is Mendaco regression free?

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

### Do ABYSEA or Mendaco regression have ads?

Mendaco regression shows ads; ABYSEA does not.

### Which is updated more often, ABYSEA or Mendaco regression?

ABYSEA ships an update every 2 weeks, and Mendaco regression every 2 months. Most recently, ABYSEA was updated on October 24, 2026 and Mendaco regression on October 27, 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.*