# Super Marimo Depth vs Mayday!

The clearest difference is in-app purchases: Super Marimo Depth at none against Mayday!'s 5. Super Marimo Depth also leads on ads (none vs shown) and iOS requirement (9.1 vs 15.0). Mayday!'s advantage is update cadence (monthly vs every 6 months) and ratings volume (5 vs 1). On price, rating and device support there is nothing between them.

Both are free to download. Mayday! sells 5 one-off in-app purchases. Super Marimo Depth asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Super Marimo Depth against 5.0 for Mayday!. That said, the two scores are not equally well evidenced: Mayday! has 5 ratings behind it against 1, so its average is the more settled of the two.

Super Marimo Depth ships an update every 6 months, Mayday! monthly. The most recent releases landed on June 25, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Super Marimo Depth | Mayday! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/super-marimo-depth/id864979172/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/mayday-the-game/id1230278235/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 124 MB | 77 MB |
| Requires iOS | **9.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Takemi Matsumoto](https://appshunter.io/developer/570173509) | [Felipe Goulart](https://appshunter.io/developer/692655314) |

## What reviewers say

### Super Marimo Depth

[App page](https://appshunter.io/ios/app/super-marimo-depth/id864979172)

Embark on a deep sea adventure to nurture a growing marimo as it descends. Feed it nutritious seaweed, avoid dangerous debris, and challenge yourself to grow it as large and as deep as possible.

**Highlights:** Guide sinking marimo, Feed marimo seaweed for growth, Avoid underwater debris, Compete on marimo size, Compete on descent depth, Choose control style

**Features:** macOS Compatibility

**In-app purchases:** none


### Mayday!

[App page](https://appshunter.io/ios/app/mayday-the-game/id1230278235)

Pilot your way through a relentless barrage of missiles in this action-packed survival game. Collect power-ups to enhance your abilities, provoke spectacular collisions, and upgrade your skills to outlast the increasing threat. Can you achieve the highest score and prove yourself the greatest pilot?

**Highlights:** Avoid incoming missiles, Provoke missile collisions, Collect power-ups, Upgrade skills, Increase speed, Use shields, Deflect missiles

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fistful of gems | $0.99 | one-time |
| Pack of gems | $1.99 | one-time |
| Bag of gems | $2.99 | one-time |
| Box of gems | $3.99 | one-time |
| Chest of gems | $4.99 | one-time |


## Frequently asked questions

### Is Super Marimo Depth free?

Super Marimo Depth is free to download, with no in-app purchases.

### Is Mayday! free?

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

### Which has better reviews, Super Marimo Depth or Mayday!?

Super Marimo Depth and Mayday! are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Super Marimo Depth or Mayday! have ads?

Mayday! shows ads; Super Marimo Depth does not.

### Which is updated more often, Super Marimo Depth or Mayday!?

Super Marimo Depth ships an update every 6 months, and Mayday! monthly. Most recently, Super Marimo Depth was updated on June 25, 2026 and Mayday! on June 1, 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.*