# Monster ABC vs dob

The clearest difference is review sentiment: Monster ABC at 85% against dob's 0%. Monster ABC also leads on rating (4.5 vs 1.0) and in-app purchases (none vs 1). dob's advantage is price ($2.99 vs $4.99) and iOS requirement (12.0 vs 15.0). On ratings volume, update cadence, ads and monetization model there is nothing between them.

Monster ABC costs $4.99 and dob $2.99 up front. dob sells 1 one-off in-app purchase. Monster ABC asks for nothing beyond the download.

Monster ABC holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 85% of Monster ABC's written reviews are positive against 0% of dob's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Monster ABC | dob |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/monster-abc-learning/id677638145/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/dob-visual-perception/id981954512/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **85.4% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | Paid |
| Size | 176 MB | 78 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [wonderkind GmbH](https://appshunter.io/developer/408718588) | [Rene Fehr-Biscioni](https://appshunter.io/developer/969998405) |

## What reviewers say

### Monster ABC

[App page](https://appshunter.io/ios/app/monster-abc-learning/id677638145)

This educational app uses engaging monsters and interactive audio-visual elements to teach preschoolers letters and initial sounds. It supports literacy acquisition through fun, game-like activities with a motivating reward system.

**Highlights:** Learn letters via initial sounds, Audio-visual interaction, Spoken words and letters, Motivating reward system, Hand-drawn pictures and sounds, English and German versions

**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 Monster ABC free?

Monster ABC costs $4.99, with no in-app purchases.

### Is dob free?

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

### Which has better reviews, Monster ABC or dob?

Monster ABC is rated higher. Monster ABC averages 4.5 out of 5 from 2 ratings, while dob averages 1.0 from 1 ratings.

### Do Monster ABC or dob have ads?

Neither Monster ABC nor dob shows ads.

### Which is updated more often, Monster ABC or dob?

Monster ABC ships an update every 3 months, and dob every 3 months. Most recently, Monster ABC was updated on October 8, 2026 and dob on October 1, 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.*