# Grammaggio vs Read Not Guess

The clearest difference is in-app purchases: Grammaggio at none against Read Not Guess's 2. Grammaggio also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.0). Read Not Guess's advantage is update cadence (weekly vs every 30 months) and ratings volume (8 vs 2). On price, rating and device support there is nothing between them.

Both are free to download. Read Not Guess sells 2 in-app purchases, starting at $3.99 per month. Grammaggio asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Grammaggio against 5.0 for Read Not Guess. Both are backed by a comparable volume of ratings — 2 and 8 respectively.

Grammaggio ships an update every 30 months, Read Not Guess weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Grammaggio | Read Not Guess |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/grammaggio/id1452948579/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/read-not-guess/id6740590540/reviews) |
| Number of ratings | 2 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 113 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rice Innovations, LLC](https://appshunter.io/developer/1452948578) | [Aldeman Education LLC](https://appshunter.io/developer/1790747462) |

## What reviewers say

### Grammaggio

[App page](https://appshunter.io/ios/app/grammaggio/id1452948579)

This app offers grammar exercises designed for children with Specific Language Impairment (SLI). It tracks scores and compares performance to age-based benchmarks, aiding language skill development.

**Highlights:** Grammar tasks for SLI, Score tracking, Age-based comparisons, Research-backed exercises, Progress monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### Read Not Guess

[App page](https://appshunter.io/ios/app/read-not-guess/id6740590540)

This app offers science-based phonics lessons and decodable stories to help parents teach their children to read. It focuses on building reading confidence and fluency through an engaging and intuitive learning experience.

**Highlights:** Phonics-based reading lessons, Decodable stories for fluency, Intuitive design for parents and kids, Progress tracking, Engaging learning environment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $3.99 | per month |
| Read Not Guess Pro | $24.99 | per year |


## Frequently asked questions

### Is Grammaggio free?

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

### Is Read Not Guess free?

Read Not Guess is free to download, with in-app purchases available.

### Which has better reviews, Grammaggio or Read Not Guess?

Grammaggio and Read Not Guess are both rated 5.0 out of 5 on the App Store, from 2 and 8 ratings respectively.

### Do Grammaggio or Read Not Guess have ads?

Read Not Guess shows ads; Grammaggio does not.

### Which is updated more often, Grammaggio or Read Not Guess?

Grammaggio ships an update every 30 months, and Read Not Guess weekly. Most recently, Grammaggio was updated on October 24, 2026 and Read Not Guess 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.*