# dob vs ChoiceTrainer 2.0

The clearest difference is price: ChoiceTrainer 2.0 at Free against dob's $2.99. ChoiceTrainer 2.0 also leads on update cadence (monthly vs every 3 months). dob's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

ChoiceTrainer 2.0 is free to download; dob costs $2.99 up front. dob sells 1 one-off in-app purchase and ChoiceTrainer 2.0 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

dob ships an update every 3 months, ChoiceTrainer 2.0 monthly. The most recent releases landed on October 17, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | dob | ChoiceTrainer 2.0 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/dob-visual-perception/id981954512/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | — |
| Size | 78 MB | 247 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rene Fehr-Biscioni](https://appshunter.io/developer/969998405) | [IntegraTools GmbH](https://appshunter.io/developer/618103816) |

## What reviewers say

### dob

[App page](https://appshunter.io/ios/app/dob-visual-perception/id981954512)

This app offers exercises to train essential visual skills like attention, coordination, and memory. It's designed for learners of all ages, including children and individuals undergoing rehabilitation, and can be customized to individual needs.

**Highlights:** Visual Attention training, Ocular motility exercises, Hand and Eye Coordination, Motion Perception, Contrast Sensitivity, Face and facial expression recognition, Color Recognition and differentiation, Figure-Ground Perception

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All exercises | $11.99 | one-time |


### ChoiceTrainer 2.0

[App page](https://appshunter.io/ios/app/choicetrainer-20/id6557075794)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eigene Übungen verwenden | $44.99 | one-time |


## Frequently asked questions

### Is dob free?

dob costs $2.99, and also offers in-app purchases.

### Is ChoiceTrainer 2.0 free?

ChoiceTrainer 2.0 is free to download, with in-app purchases available.

### Do dob or ChoiceTrainer 2.0 have ads?

Neither dob nor ChoiceTrainer 2.0 shows ads.

### Which is updated more often, dob or ChoiceTrainer 2.0?

dob ships an update every 3 months, and ChoiceTrainer 2.0 monthly. Most recently, dob was updated on October 17, 2026 and ChoiceTrainer 2.0 on October 27, 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.*