# Grade 4 Math & Science vs Shenmo Abacus

The clearest difference is price: Shenmo Abacus at Free against Grade 4 Math & Science's $1.99. Shenmo Abacus also leads on iOS requirement (12.0 vs 18.2). Grade 4 Math & Science's advantage is in-app purchases (none vs 3). On update cadence, ads and device support there is nothing between them.

Shenmo Abacus is free to download; Grade 4 Math & Science costs $1.99 up front. Shenmo Abacus sells 3 one-off in-app purchases. Grade 4 Math & Science asks for nothing beyond the download.

Grade 4 Math & Science ships an update every 3 weeks, Shenmo Abacus fortnightly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Grade 4 Math & Science | Shenmo Abacus |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/grade-4-math-and-science/id520865413/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Paid | — |
| Size | 2 MB | 76 MB |
| Requires iOS | 18.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Prachi Pimpalkhare](https://appshunter.io/developer/359099311) | [beijing shenmo culture company](https://appshunter.io/developer/1377583312) |

## What reviewers say

### Grade 4 Math & Science

[App page](https://appshunter.io/ios/app/grade-4-math-and-science/id520865413)

This app offers interactive quizzes for fourth graders to master math and science concepts. It provides instant feedback, progress tracking with visual charts, and offline access to all content. Designed to be child-friendly and distraction-free, it supports learning at home or in class.

**Highlights:** Topic-wise quizzes, Instant feedback, Progress tracking with pie charts, Score reset option, Offline mode, Child-friendly design

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

**In-app purchases:** none


### Shenmo Abacus

[App page](https://appshunter.io/ios/app/shenmo-abacus/id6738268822)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly card (1 month) | $0.99 | one-time |
| VIP half year card (6 months) | $5.99 | one-time |
| VIP Annual Card(12 months) | $9.99 | one-time |


## Frequently asked questions

### Is Grade 4 Math & Science free?

Grade 4 Math & Science costs $1.99, with no in-app purchases.

### Is Shenmo Abacus free?

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

### Do Grade 4 Math & Science or Shenmo Abacus have ads?

Neither Grade 4 Math & Science nor Shenmo Abacus shows ads.

### Which is updated more often, Grade 4 Math & Science or Shenmo Abacus?

Grade 4 Math & Science ships an update every 3 weeks, and Shenmo Abacus fortnightly. Most recently, Grade 4 Math & Science was updated on October 27, 2026 and Shenmo Abacus on October 25, 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.*