# Moji vs dob

The clearest difference is in-app purchases: Moji at none against dob's 1. Moji also leads on device support (3 vs 1) and price ($1.99 vs $2.99). dob's advantage is update cadence (every 3 months vs every 31 months). On ads and iOS requirement there is nothing between them.

Moji costs $1.99 and dob $2.99 up front. dob sells 1 one-off in-app purchase. Moji asks for nothing beyond the download.

Moji ships an update every 31 months, dob every 3 months. The most recent releases landed on October 30, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Moji | dob |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 3 months** |
| Monetization | — | Paid |
| Size | 18 MB | 78 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Extransit](https://appshunter.io/developer/492614145) | [Rene Fehr-Biscioni](https://appshunter.io/developer/969998405) |

## What reviewers say

### Moji

[App page](https://appshunter.io/ios/app/moji-imparare-lorologio/id504500254)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Moji free?

Moji costs $1.99, with no in-app purchases.

### Is dob free?

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

### Do Moji or dob have ads?

Neither Moji nor dob shows ads.

### Which is updated more often, Moji or dob?

Moji ships an update every 31 months, and dob every 3 months. Most recently, Moji was updated on October 30, 2026 and dob on October 17, 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.*