# tabDo! vs (AR) Number Line

The clearest difference is price: (AR) Number Line at $0.99 against tabDo!'s $3.99. tabDo!'s advantage is iOS requirement (11.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

tabDo! costs $3.99 and (AR) Number Line $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | tabDo! | (AR) Number Line |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Paid | — |
| Size | 14 MB | 11 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Helbling Verlagsgesellschaft m.b.H](https://appshunter.io/developer/1069879136) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### tabDo!

[App page](https://appshunter.io/ios/app/tabdo/id1488439711)

This app offers an innovative method for learning music fundamentals like notes and scales through interactive exercises on tablets. It helps children develop an ear for music by playing, modifying, and improvising melodies, progressing from basic motifs to chromatic scales and note reading.

**Highlights:** Develops audiation skills, Trains music listening competencies, Enhances individualized learning, Introduces musical notation, Promotes music-making, Multiple interactive functions

**Features:** Vision Pro support

**In-app purchases:** none


### (AR) Number Line

[App page](https://appshunter.io/ios/app/ar-number-line/id6473689075)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is tabDo! free?

tabDo! costs $3.99, with no in-app purchases.

### Is (AR) Number Line free?

(AR) Number Line costs $0.99, with no in-app purchases.

### Do tabDo! or (AR) Number Line have ads?

Neither tabDo! nor (AR) Number Line shows ads.

### Which is updated more often, tabDo! or (AR) Number Line?

tabDo! ships an update every 6 months, and (AR) Number Line every 6 months. Most recently, tabDo! was updated on October 2, 2026 and (AR) Number Line on October 7, 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.*