# AB Math Expert vs dob pro

The clearest difference is price: AB Math Expert at $0.99 against dob pro's $49.99. AB Math Expert also leads on device support (3 vs 1) and iOS requirement (8.0 vs 12.0). On update cadence, ads and in-app purchases there is nothing between them.

AB Math Expert costs $0.99 and dob pro $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AB Math Expert ships an update every 2 months, dob pro every 3 months. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | AB Math Expert | dob pro |
| --- | --- | --- |
| Price | **$0.99** | $49.99 |
| Rating | **[4.1 (13 ratings)](https://appshunter.io/ios/app/ab-math-expert/id423244428/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 96.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | — |
| Size | 17 MB | 78 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Lehovetzki](https://appshunter.io/developer/412827944) | [Rene Fehr-Biscioni](https://appshunter.io/developer/969998405) |

## What reviewers say

### AB Math Expert

[App page](https://appshunter.io/ios/app/ab-math-expert/id423244428)

Engage in a fast-paced mental calculation game that tests your speed and concentration. Click on bubbles in ascending order to solve math problems under time pressure. Compete globally and challenge yourself with five difficulty levels.

**Highlights:** Mental calculation game, Bubble clicking in ascending order, Speed and concentration challenge, Global ranking via Game Center, 5 difficulty levels, Universal app for iPad and iPhone

**Features:** Vision Pro support

**In-app purchases:** none


### dob pro

[App page](https://appshunter.io/ios/app/dob-pro-visual-perception/id969998406)

**In-app purchases:** none


## Frequently asked questions

### Is AB Math Expert free?

AB Math Expert costs $0.99, with no in-app purchases.

### Is dob pro free?

dob pro costs $49.99, with no in-app purchases.

### Do AB Math Expert or dob pro have ads?

Neither AB Math Expert nor dob pro shows ads.

### Which is updated more often, AB Math Expert or dob pro?

AB Math Expert ships an update every 2 months, and dob pro every 3 months. Most recently, AB Math Expert was updated on September 26, 2026 and dob pro on September 29, 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.*