# Note Navigator vs Abacus Kids

The clearest difference is price: Abacus Kids at Free against Note Navigator's $5.00. Abacus Kids also leads on update cadence (every 10 days vs every 8 months) and ratings volume (5 vs 1). Note Navigator's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 17.0). On rating, ads and device support there is nothing between them.

Abacus Kids is free to download; Note Navigator costs $5.00 up front. Abacus Kids sells 6 in-app purchases, starting at $0.99 per 7 days. Note Navigator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Note Navigator against 5.0 for Abacus Kids. That said, the two scores are not equally well evidenced: Abacus Kids has 5 ratings behind it against 1, so its average is the more settled of the two.

Note Navigator ships an update every 8 months, Abacus Kids every 10 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Note Navigator | Abacus Kids |
| --- | --- | --- |
| Price | $5.00 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/note-navigator-viola/id6736468869/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/abacus-kids-mental-math/id6749298785/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 74 MB | 59 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Archetto LLC](https://appshunter.io/developer/1772077919) | [Vedaavi Learning](https://appshunter.io/developer/1829903467) |

## What reviewers say

### Note Navigator

[App page](https://appshunter.io/ios/app/note-navigator-viola/id6736468869)

This music education app helps viola students learn note locations on the fingerboard through a gamified flashcard system. It offers nearly 300 levels across four difficulty tiers, introducing increasingly complex musical concepts.

**Highlights:** Gamified note learning, Viola fingerboard association, Nearly 300 levels, Four difficulty tiers, Introduces accidentals, Treble clef support

**Features:** macOS Compatibility

**In-app purchases:** none


### Abacus Kids

[App page](https://appshunter.io/ios/app/abacus-kids-mental-math/id6749298785)

This app teaches children mental math skills using the abacus method. It offers structured lessons and practice modes for various age groups, from basic bead manipulation to advanced mental calculation and times tables.

**Highlights:** Abacus method for mental math, Structured curriculum by age group, Practice modes: Step by Step, Final Answer, Formal Exam, Customizable Anzan training, Math game zone with multiple mini-games, Progress tracking and exam results

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $0.99 | per 7 days |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription Discount | $12.00 | per year |
| Yearly Subscription | $17.99 | per year |
| Lifetime Access Discount | $29.99 | one-time |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Note Navigator free?

Note Navigator costs $5.00, with no in-app purchases.

### Is Abacus Kids free?

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

### Which has better reviews, Note Navigator or Abacus Kids?

Note Navigator and Abacus Kids are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Note Navigator or Abacus Kids have ads?

Neither Note Navigator nor Abacus Kids shows ads.

### Which is updated more often, Note Navigator or Abacus Kids?

Note Navigator ships an update every 8 months, and Abacus Kids every 10 days. Most recently, Note Navigator was updated on November 7, 2026 and Abacus Kids on November 5, 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.*