# lemma vs TMUA Prep

The clearest difference is update cadence: lemma at every 3 days against TMUA Prep's every 3 weeks. lemma also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. lemma sells 3 in-app purchases, starting at $6.99 per 7 days and TMUA Prep sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

lemma ships an update every 3 days, TMUA Prep every 3 weeks. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | lemma | TMUA Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lemma-comp-math-trainer/id6770669166/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Roger You](https://appshunter.io/developer/1804598101) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### lemma

[App page](https://appshunter.io/ios/app/lemma-comp-math-trainer/id6770669166)

This app provides focused, daily practice for quantitative interviews, featuring timed sprints of math and probability problems. It tracks your skill across disciplines with adaptive difficulty and offers hints and solutions to help you improve. Designed for those preparing for trading firm interviews or seeking to build a quantitative thinking habit.

**Highlights:** Daily timed problem sprints, Per-category ELO skill tracking, Adaptive difficulty, Hints and step-through solutions, Streaks, XP, and achievements, Leaderboard

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lemma Premium | $6.99 | per 7 days |
| Lemma Premium | $9.99 | per month |
| Lemma Premium | $59.99 | per year |


### TMUA Prep

[App page](https://appshunter.io/ios/app/tmua-prep/id6793039701)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Access | $34.99 | one-time |


## Frequently asked questions

### Is lemma free?

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

### Is TMUA Prep free?

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

### Do lemma or TMUA Prep have ads?

Neither lemma nor TMUA Prep shows ads.

### Which is updated more often, lemma or TMUA Prep?

lemma ships an update every 3 days, and TMUA Prep every 3 weeks. Most recently, lemma was updated on September 19, 2026 and TMUA Prep on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*