# one plus one automation vs Number Decomposition

The clearest difference is review sentiment: Number Decomposition at 100% against one plus one automation's 67%. one plus one automation's advantage is update cadence (every 2 weeks vs every 5 months) and price ($0.99 vs $3.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

one plus one automation costs $0.99 and Number Decomposition $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

one plus one automation ships an update every 2 weeks, Number Decomposition every 5 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | one plus one automation | Number Decomposition |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Paid | Paid |
| Size | 9 MB | 78 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christian Urff](https://appshunter.io/developer/415894463) | [Lernwunder](https://appshunter.io/developer/1840747082) |

## What reviewers say

### one plus one automation

[App page](https://appshunter.io/ios/app/one-plus-one-automation/id1488214104)

This app helps children automate addition and subtraction skills. It uses intelligent training methods based on memory principles to reinforce learned tasks and improve recall speed. Designed for children who already understand basic math concepts, it focuses on memorization for more complex calculations.

**Highlights:** Addition and subtraction up to 20, Intelligent training based on memory, Individual learning progress tracking, Written and spoken task presentation, Distraction-free learning environment, Timed challenges for recall speed

**Features:** macOS Compatibility

**In-app purchases:** none


### Number Decomposition

[App page](https://appshunter.io/ios/app/number-decomposition-math/id6752735119)

This educational app teaches children foundational math skills by focusing on number bonds up to 10, avoiding counting to build a strong understanding of arithmetic. It uses visual aids and a structured approach for quick, accurate recall of addition and subtraction facts.

**Highlights:** Number bonds up to 10, Drag and drop interface, Visual quantity images, Spaced repetition learning, Child-friendly avatars, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is one plus one automation free?

one plus one automation costs $0.99, with no in-app purchases.

### Is Number Decomposition free?

Number Decomposition costs $3.99, with no in-app purchases.

### Do one plus one automation or Number Decomposition have ads?

Neither one plus one automation nor Number Decomposition shows ads.

### Which is updated more often, one plus one automation or Number Decomposition?

one plus one automation ships an update every 2 weeks, and Number Decomposition every 5 months. Most recently, one plus one automation was updated on October 14, 2026 and Number Decomposition on October 12, 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.*