# Decoding Chart vs MathBook+

The clearest difference is rating: Decoding Chart at 3.5 against MathBook+'s 1.0. Decoding Chart also leads on ads (none vs shown) and monetization model (free vs ad-supported). MathBook+'s advantage is update cadence (monthly vs every 71 months) and device support (3 vs 1). On price, ratings volume, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Decoding Chart holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Decoding Chart ships an update every 71 months, MathBook+ monthly. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Decoding Chart | MathBook+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/decoding-chart-flip/id499927572/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/mathbook-plus/id1547221989/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 71 months | **Monthly** |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 31 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bob Baratta-Lorton](https://appshunter.io/developer/499646138) | [Education House](https://appshunter.io/developer/1533229296) |

## What reviewers say

### Decoding Chart

[App page](https://appshunter.io/ios/app/decoding-chart-flip/id499927572)

This app is part of a reading and writing curriculum designed for beginning readers or those who have struggled with literacy. It helps children transition from recognizing sounds to understanding letter spellings, using color-coded charts to guide them.

**Highlights:** Sound-to-letter decoding, Color-coded spelling guidance, Frequency-based spelling order, Part of a comprehensive reading program, Supports beginning readers

**Features:** macOS Compatibility

**In-app purchases:** none


### MathBook+

[App page](https://appshunter.io/ios/app/mathbook-plus/id1547221989)

This digital math textbook offers over 1,000 exercises for self-paced learning on Apple devices. It provides a comprehensive resource for mastering mathematical concepts.

**Highlights:** Digital math textbook, Over 1,000 exercises, Self-paced learning, Supports iPhone, iPad, iPod, Free to download

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decoding Chart free?

Decoding Chart is free to download, with no in-app purchases.

### Is MathBook+ free?

MathBook+ is free to download, with no in-app purchases.

### Which has better reviews, Decoding Chart or MathBook+?

Decoding Chart is rated higher. Decoding Chart averages 3.5 out of 5 from 2 ratings, while MathBook+ averages 1.0 from 1 ratings.

### Do Decoding Chart or MathBook+ have ads?

MathBook+ shows ads; Decoding Chart does not.

### Which is updated more often, Decoding Chart or MathBook+?

Decoding Chart ships an update every 71 months, and MathBook+ monthly. Most recently, Decoding Chart was updated on September 25, 2026 and MathBook+ on September 21, 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.*