# Smart Mental Math vs Doomsday Practice

The clearest difference is in-app purchases: Doomsday Practice at none against Smart Mental Math's 2. Smart Mental Math's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Smart Mental Math sells 2 one-off in-app purchases. Doomsday Practice asks for nothing beyond the download.

## The numbers

| Metric | Smart Mental Math | Doomsday Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-mental-math-ai-trainer/id6761359389/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free | — |
| Size | 24 MB | 1 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maximilian Daniliev](https://appshunter.io/developer/1889111350) | [Taiyo Tsuchiya](https://appshunter.io/developer/1868015190) |

## What reviewers say

### Smart Mental Math

[App page](https://appshunter.io/ios/app/smart-mental-math-ai-trainer/id6761359389)

Improve your arithmetic skills with an AI coach that adapts to your learning pace. Master multiplication, division, percentages, and more through interactive lessons and targeted practice sessions. Learn practical calculation strategies to boost speed and accuracy in everyday situations.

**Highlights:** Adaptive AI coaching, Learn calculation strategies, Practice core arithmetic skills, Focus on weak spots, Progress tracking, Short, high-impact sessions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Lifetime Unlock | $3.99 | one-time |


### Doomsday Practice

[App page](https://appshunter.io/ios/app/doomsday-practice/id6763708034)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Mental Math free?

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

### Is Doomsday Practice free?

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

### Do Smart Mental Math or Doomsday Practice have ads?

Neither Smart Mental Math nor Doomsday Practice shows ads.

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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.*