# Oslr vs Smart Mental Math Trainer

The clearest difference is in-app purchases: Oslr at none against Smart Mental Math Trainer's 2. Smart Mental Math Trainer's advantage is update cadence (every 3 days vs every 5 weeks). On price, review sentiment, ads and monetization model there is nothing between them.

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

Oslr ships an update every 5 weeks, Smart Mental Math Trainer every 3 days. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Oslr | Smart Mental Math Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-mental-math-trainer/id6761359389/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free | Free |
| Size | 20 MB | 32 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Oslr Ltd](https://appshunter.io/developer/1148913595) | [Maximilian Daniliev](https://appshunter.io/developer/1889111350) |

## What reviewers say

### Oslr

[App page](https://appshunter.io/ios/app/oslr/id989626496)

Facilitates hospital training coordination for doctors and medical students. Connect with peers, schedule teaching sessions, share resources, and log feedback for professional development. Streamlines workplace learning for improved medical education.

**Highlights:** Match teaching sessions to student needs, Schedule teaching times for all participants, Share peer-recommended learning resources, Capture teaching and feedback for portfolios, Simplify workplace teaching and learning, Log training and feedback for CPD

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

**In-app purchases:** none


### Smart Mental Math Trainer

[App page](https://appshunter.io/ios/app/smart-mental-math-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, Family Sharing, Vision Pro support

**In-app purchases (2)**

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


## Frequently asked questions

### Is Oslr free?

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

### Is Smart Mental Math Trainer free?

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

### Do Oslr or Smart Mental Math Trainer have ads?

Neither Oslr nor Smart Mental Math Trainer shows ads.

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

Oslr ships an update every 5 weeks, and Smart Mental Math Trainer every 3 days. Most recently, Oslr was updated on October 16, 2026 and Smart Mental Math Trainer on October 21, 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.*