# ∫dx vs TMUA Prep

The clearest difference is iOS requirement: ∫dx at 15.1 against TMUA Prep's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ∫dx sells 2 in-app purchases, starting at $4.99 per month 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.

∫dx ships an update monthly, TMUA Prep every 3 weeks. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ∫dx | TMUA Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 42 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PRANEEL AGRAWAL](https://appshunter.io/developer/1868893039) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### ∫dx

[App page](https://appshunter.io/ios/app/dx-a-level-maths-practice/id6758026965)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dx Premium Monthly | $4.99 | per month |
| dx Premium Annual | $12.99 | 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 ∫dx free?

∫dx 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 ∫dx or TMUA Prep have ads?

Neither ∫dx nor TMUA Prep shows ads.

### Which is updated more often, ∫dx or TMUA Prep?

∫dx ships an update monthly, and TMUA Prep every 3 weeks. Most recently, ∫dx was updated on September 20, 2026 and TMUA Prep on September 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.*