# QuantDojo vs lemma

The clearest difference is iOS requirement: lemma at 15.1 against QuantDojo's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. QuantDojo sells 3 in-app purchases, starting at $12.99 per month and lemma sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | QuantDojo | lemma |
| --- | --- | --- |
| 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 |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 31 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Elias Lindbergs](https://appshunter.io/developer/1885362319) | [Roger You](https://appshunter.io/developer/1804598101) |

## What reviewers say

### QuantDojo

[App page](https://appshunter.io/ios/app/quantdojo/id6761349180)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $12.99 | per month |
| Annual | $79.99 | per year |
| Lifetime Access | $199.99 | one-time |


### 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 |


## Frequently asked questions

### Is QuantDojo free?

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

### Is lemma free?

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

### Do QuantDojo or lemma have ads?

Neither QuantDojo nor lemma shows ads.

---

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