# GrammOrNot vs Learn Data Science Tutorials

The clearest difference is review sentiment: GrammOrNot at 100% against Learn Data Science Tutorials's 0%. GrammOrNot also leads on price (Free vs $2.99) and rating (5.0 vs 1.0). On ads, in-app purchases and device support there is nothing between them.

GrammOrNot is free to download; Learn Data Science Tutorials costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GrammOrNot holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 100% of GrammOrNot's written reviews are positive against 0% of Learn Data Science Tutorials's.

GrammOrNot ships an update every 5 months, Learn Data Science Tutorials every 10 months. The most recent releases landed on November 13, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | GrammOrNot | Learn Data Science Tutorials |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grammornot/id1100843751/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/learn-data-science-tutorials/id6453023361/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 10 months |
| Monetization | **Free** | Paid |
| Size | 50 MB | 74 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Cheryl Montgomery](https://appshunter.io/developer/611176285) | [Muhammad Umair](https://appshunter.io/developer/1696049320) |

## What reviewers say

### GrammOrNot

[App page](https://appshunter.io/ios/app/grammornot/id1100843751)

This educational app uses helpful critters to guide users in identifying and correcting common grammar mistakes. Players select the correct sentence to improve their score and progress through interactive challenges.

**Highlights:** Interactive grammar challenges, Critter-guided learning, Score-based progression, Focus on common mistakes, Sentence selection gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Data Science Tutorials

[App page](https://appshunter.io/ios/app/learn-data-science-tutorials/id6453023361)

Master data science with this comprehensive learning app. It covers R programming, SQL, and data visualization fundamentals. Ideal for beginners and those preparing for interviews or tests.

**Highlights:** Data science fundamentals, R programming language, SQL curriculum, Data visualization, Interview preparation, Beginner-friendly lessons

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

**In-app purchases:** none


## Frequently asked questions

### Is GrammOrNot free?

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

### Is Learn Data Science Tutorials free?

Learn Data Science Tutorials costs $2.99, with no in-app purchases.

### Which has better reviews, GrammOrNot or Learn Data Science Tutorials?

GrammOrNot is rated higher. GrammOrNot averages 5.0 out of 5 from 3 ratings, while Learn Data Science Tutorials averages 1.0 from 1 ratings.

### Do GrammOrNot or Learn Data Science Tutorials have ads?

Neither GrammOrNot nor Learn Data Science Tutorials shows ads.

### Which is updated more often, GrammOrNot or Learn Data Science Tutorials?

GrammOrNot ships an update every 5 months, and Learn Data Science Tutorials every 10 months. Most recently, GrammOrNot was updated on November 13, 2026 and Learn Data Science Tutorials on November 7, 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.*