# Mental Math Trainer vs UndercoWhite

The clearest difference is ads: Mental Math Trainer at none against UndercoWhite's shown. UndercoWhite's advantage is update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Mental Math Trainer sells 2 in-app purchases, starting at $1.99 per month and UndercoWhite sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Mental Math Trainer ships an update every 3 weeks, UndercoWhite every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Mental Math Trainer | UndercoWhite |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 51 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nadzeya Yashchuk](https://appshunter.io/developer/1835856077) | [IDRIS ALI](https://appshunter.io/developer/1896338652) |

## What reviewers say

### Mental Math Trainer

[App page](https://appshunter.io/ios/app/mental-math-trainer-sprint/id6763547636)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Stats. No Ads. Monthly. | $1.99 | per month |
| Full Stats. All Year. | $9.99 | per year |


### UndercoWhite

[App page](https://appshunter.io/ios/app/undercowhite/id6766932295)

A local multiplayer party game where players secretly discover roles and words. Bluff, observe, and vote to eliminate impostors, but beware of Mr. White's potential win. Enjoy quick, engaging rounds with friends and family.

**Highlights:** Secret roles (Civilians, Undercover, Mr White), Bluffing and deduction gameplay, Local multiplayer on a single phone, Unlockable word packs and themes, No account required, Immersive interface

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Breaking Bad | $0.99 | one-time |
| The Boys | $0.99 | one-time |
| Prison Break | $0.99 | one-time |
| The Walking Dead | $0.99 | one-time |
| Tennis theme | $0.99 | one-time |
| MMA Theme | $0.99 | one-time |
| Nouveau thème sur la F1 | $0.99 | one-time |
| New theme boxe | $0.99 | one-time |
| Sport Pack | $1.99 | one-time |
| Bundle Sport | $2.99 | one-time |


## Frequently asked questions

### Is Mental Math Trainer free?

Mental Math Trainer is free to download, with in-app purchases available.

### Is UndercoWhite free?

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

### Do Mental Math Trainer or UndercoWhite have ads?

UndercoWhite shows ads; Mental Math Trainer does not.

### Which is updated more often, Mental Math Trainer or UndercoWhite?

Mental Math Trainer ships an update every 3 weeks, and UndercoWhite every 5 days. Most recently, Mental Math Trainer was updated on October 31, 2026 and UndercoWhite on October 31, 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.*