# Blending Stack vs Piano Scale Coach

The clearest difference is price: Piano Scale Coach at Free against Blending Stack's $3.99. Piano Scale Coach also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (15.1 vs 17.2). Blending Stack's advantage is rating (5.0 vs 1.0) and in-app purchases (none vs 1). On ratings volume, ads and device support there is nothing between them.

Piano Scale Coach is free to download; Blending Stack costs $3.99 up front. Piano Scale Coach sells 1 one-off in-app purchase. Blending Stack asks for nothing beyond the download.

Blending Stack holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Blending Stack ships an update every 14 months, Piano Scale Coach every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Blending Stack | Piano Scale Coach |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blending-stack/id6736709814/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/piano-scale-coach/id6778842760/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 3 MB | 36 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kids n Books](https://appshunter.io/developer/1773130843) | [Jack Carroll](https://appshunter.io/developer/6778842762) |

## What reviewers say

### Blending Stack

[App page](https://appshunter.io/ios/app/blending-stack/id6736709814)

This app helps educators and parents support students with learning differences, like dyslexia, by creating customizable blending stacks. It aids in building decoding skills step-by-step through a structured phoneme progression, suitable for one-on-one or small group instruction.

**Highlights:** Customizable blending stacks, Supports CVC to multisyllabic words, Structured phoneme progression, Step-by-step decoding skill building, Ideal for one-on-one instruction, Suitable for small group lessons

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

**In-app purchases:** none


### Piano Scale Coach

[App page](https://appshunter.io/ios/app/piano-scale-coach/id6778842760)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All 12 Keys | $7.99 | one-time |


## Frequently asked questions

### Is Blending Stack free?

Blending Stack costs $3.99, with no in-app purchases.

### Is Piano Scale Coach free?

Piano Scale Coach is free to download, with in-app purchases available.

### Which has better reviews, Blending Stack or Piano Scale Coach?

Blending Stack is rated higher. Blending Stack averages 5.0 out of 5 from 1 ratings, while Piano Scale Coach averages 1.0 from 1 ratings.

### Do Blending Stack or Piano Scale Coach have ads?

Neither Blending Stack nor Piano Scale Coach shows ads.

### Which is updated more often, Blending Stack or Piano Scale Coach?

Blending Stack ships an update every 14 months, and Piano Scale Coach every 3 months. Most recently, Blending Stack was updated on October 24, 2026 and Piano Scale Coach on October 24, 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.*