# BTT Lah! vs UMA Maths

The clearest difference is in-app purchases: UMA Maths at none against BTT Lah!'s 4. UMA Maths also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BTT Lah! sells 4 one-off in-app purchases. UMA Maths asks for nothing beyond the download.

BTT Lah! ships an update fortnightly, UMA Maths every 2 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | BTT Lah! | UMA Maths |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 81 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appsaur.com Pte Ltd](https://appshunter.io/developer/1471583826) | [shuihua zhu](https://appshunter.io/developer/1444836907) |

## What reviewers say

### BTT Lah!

[App page](https://appshunter.io/ios/app/btt-lah-basic-theory-test/id1493701248)

This app helps you prepare for your driving theory test with features designed to reduce eye strain and optimize learning. It uses smart algorithms to focus on your weak areas and reinforces learning through automated repetition and progress tracking.

**Highlights:** Reduced eye strain design, Adaptive question inflow, Automated short-term memory rehearsal, Detailed result analysis, Progress monitoring charts, Timed e-trial tests, Question and answer shuffling

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 600 BTT Questions All language | $12.99 | one-time |
| 600 BTT Questions All language | $24.99 | one-time |
| ProEnglish600Question | $28.99 | one-time |
| ProALLLanguages600Questions | $54.99 | one-time |


### UMA Maths

[App page](https://appshunter.io/ios/app/uma-maths/id6447057157)

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

**In-app purchases:** none


## Frequently asked questions

### Is BTT Lah! free?

BTT Lah! is free to download, with in-app purchases available.

### Is UMA Maths free?

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

### Do BTT Lah! or UMA Maths have ads?

Neither BTT Lah! nor UMA Maths shows ads.

### Which is updated more often, BTT Lah! or UMA Maths?

BTT Lah! ships an update fortnightly, and UMA Maths every 2 days. Most recently, BTT Lah! was updated on October 2, 2026 and UMA Maths on September 30, 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.*