# Combinatorics PRO vs DAA

The clearest difference is price: DAA at Free against Combinatorics PRO's $1.99. Combinatorics PRO's advantage is in-app purchases (none vs 3) and update cadence (monthly vs every 3 months). On ads, device support and iOS requirement there is nothing between them.

DAA is free to download; Combinatorics PRO costs $1.99 up front. DAA sells 3 in-app purchases, starting at $3.99 per month. Combinatorics PRO asks for nothing beyond the download.

Combinatorics PRO ships an update monthly, DAA every 3 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Combinatorics PRO | DAA |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 179 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## What reviewers say

### Combinatorics PRO

[App page](https://appshunter.io/ios/app/combinatorics-pro/id6472449368)

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

**In-app purchases:** none


### DAA

[App page](https://appshunter.io/ios/app/daa-c01-data-analyst-prep/id6774894106)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Yearly | $14.99 | per year |
| Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Combinatorics PRO free?

Combinatorics PRO costs $1.99, with no in-app purchases.

### Is DAA free?

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

### Do Combinatorics PRO or DAA have ads?

Neither Combinatorics PRO nor DAA shows ads.

### Which is updated more often, Combinatorics PRO or DAA?

Combinatorics PRO ships an update monthly, and DAA every 3 months. Most recently, Combinatorics PRO was updated on October 24, 2026 and DAA on October 22, 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.*