# Fish Math Trainer vs Hidden Video

The clearest difference is in-app purchases: Fish Math Trainer at none against Hidden Video's 2. Hidden Video's advantage is ads (none vs shown) and update cadence (every 6 days vs every 10 months). On price and device support there is nothing between them.

Both are free to download. Hidden Video sells 2 one-off in-app purchases. Fish Math Trainer asks for nothing beyond the download.

Fish Math Trainer ships an update every 10 months, Hidden Video every 6 days. The most recent releases landed on September 12, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Fish Math Trainer | Hidden Video |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (16 ratings)](https://appshunter.io/ios/app/hidden-video-math-puzzles/id1451109117/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 1.4 GB |
| Requires iOS | 12.0 | **10.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andela ICT](https://appshunter.io/developer/342734534) | [Arch Square](https://appshunter.io/developer/432278777) |

## What reviewers say

### Fish Math Trainer

[App page](https://appshunter.io/ios/app/fish-math-trainer/id987236624)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Video

[App page](https://appshunter.io/ios/app/hidden-video-math-puzzles/id1451109117)

Solve math puzzles to reveal hidden videos. Drag and drop answer pieces to uncover the video content. The faster you solve, the higher your score.

**Highlights:** Solve math puzzles, Reveal hidden videos, Drag and drop gameplay, Multiple math types (addition, subtraction, multiplication, division), Scoring based on speed

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Premium Levels | $1.99 | one-time |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Fish Math Trainer free?

Fish Math Trainer is free to download, with no in-app purchases.

### Is Hidden Video free?

Hidden Video is free to download, with in-app purchases available.

### Do Fish Math Trainer or Hidden Video have ads?

Fish Math Trainer shows ads; Hidden Video does not.

### Which is updated more often, Fish Math Trainer or Hidden Video?

Fish Math Trainer ships an update every 10 months, and Hidden Video every 6 days. Most recently, Fish Math Trainer was updated on September 12, 2026 and Hidden Video on October 22, 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.*