# Decoding Chart vs Knowre Math

The clearest difference is update cadence: Knowre Math at every 5 weeks against Decoding Chart's every 71 months. Knowre Math also leads on ratings volume (6 vs 2) and iOS requirement (11.0 vs 15.6). Decoding Chart's advantage is rating (3.5 vs 3.2) and review sentiment (100% vs 80%). On price, ads, in-app purchases and monetization model 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 3.2. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 100% of Decoding Chart's written reviews are positive against 80% of Knowre Math's.

Decoding Chart ships an update every 71 months, Knowre Math every 5 weeks. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Decoding Chart | Knowre Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/decoding-chart-flip/id499927572/reviews)** | [3.2 (6 ratings)](https://appshunter.io/ios/app/knowre-math/id1013478802/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 71 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 103 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bob Baratta-Lorton](https://appshunter.io/developer/499646138) | [KnowRe Americas Inc.](https://appshunter.io/developer/1013478801) |

## 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


### Knowre Math

[App page](https://appshunter.io/ios/app/knowre-math/id1013478802)

This app offers a standards-aligned online math supplement for grades 1-12. It identifies and addresses individual learning gaps using personalized curricula and continuous assessment, supporting both students and teachers with actionable data.

**Highlights:** Standards-aligned curriculum, Individual learning gap identification, Personalized curricula, Continuous assessment, Teacher dashboard with actionable data, Interactive and scaffolded support

**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 Knowre Math free?

Knowre Math is free to download, with no in-app purchases.

### Which has better reviews, Decoding Chart or Knowre Math?

Decoding Chart is rated higher. Decoding Chart averages 3.5 out of 5 from 2 ratings, while Knowre Math averages 3.2 from 6 ratings.

### Do Decoding Chart or Knowre Math have ads?

Neither Decoding Chart nor Knowre Math shows ads.

### Which is updated more often, Decoding Chart or Knowre Math?

Decoding Chart ships an update every 71 months, and Knowre Math every 5 weeks. Most recently, Decoding Chart was updated on September 25, 2026 and Knowre Math on October 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.*