# Mathin vs Fill a Bottle

The clearest difference is update cadence: Fill a Bottle at every 3 days against Mathin's every 11 months. Fill a Bottle also leads on ratings volume (54 vs 1) and iOS requirement (13.0 vs 15.0). Mathin's advantage is rating (5.0 vs 4.6). On price, review sentiment, 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.

Mathin holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Fill a Bottle has 54 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Mathin ships an update every 11 months, Fill a Bottle every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mathin | Fill a Bottle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathin-brain-training-game/id6737774311/reviews)** | [4.6 (54 ratings)](https://appshunter.io/ios/app/fill-a-bottle/id6740048468/reviews) |
| Number of ratings | 1 | **54** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 11 months | **Every 3 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 159 MB | 109 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Urban Plugged](https://appshunter.io/developer/1646065828) | [Thinh Nguyen Dyc](https://appshunter.io/developer/1574029057) |

## What reviewers say

### Mathin

[App page](https://appshunter.io/ios/app/mathin-brain-training-game/id6737774311)

Engage in a fast-paced math challenge to sharpen your cognitive skills. Solve problems against the clock, with each correct answer increasing the difficulty and adding time. Unlock achievements and compete on global leaderboards in this addictive brain training game.

**Highlights:** Brain training challenges, Fast-paced gameplay, Unlockable achievements, Global leaderboards, Improve focus and memory, Boost math speed

**Features:** macOS Compatibility

**In-app purchases:** none


### Fill a Bottle

[App page](https://appshunter.io/ios/app/fill-a-bottle/id6740048468)

Arrange objects to fit perfectly into a vase in this relaxing puzzle game. It offers a satisfying ASMR experience with its intuitive gameplay and calming visuals.

**Highlights:** Object arrangement puzzles, Vase filling challenges, ASMR relaxation, Intuitive gameplay, Calming visuals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mathin free?

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

### Is Fill a Bottle free?

Fill a Bottle is free to download, with no in-app purchases.

### Which has better reviews, Mathin or Fill a Bottle?

Mathin is rated higher. Mathin averages 5.0 out of 5 from 1 ratings, while Fill a Bottle averages 4.6 from 54 ratings.

### Do Mathin or Fill a Bottle have ads?

Both Mathin and Fill a Bottle show ads.

### Which is updated more often, Mathin or Fill a Bottle?

Mathin ships an update every 11 months, and Fill a Bottle every 3 days. Most recently, Mathin was updated on October 24, 2026 and Fill a Bottle on October 25, 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.*