# S vs LearningUtils

The clearest difference is review sentiment: S at 100% against LearningUtils's 0%. S also leads on iOS requirement (15.1 vs 18.6). LearningUtils's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. S sells 3 in-app purchases, starting at $1.99 per month. LearningUtils asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | S | LearningUtils |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/s-rootwords-learn-vocabulary/id6757831810/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 77 MB | 29 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Sang Ngo](https://appshunter.io/developer/1859892801) | [Nguyen Ngoc Duy Luan](https://appshunter.io/developer/1104350466) |

## What reviewers say

### S

[App page](https://appshunter.io/ios/app/s-rootwords-learn-vocabulary/id6757831810)

Master English vocabulary by understanding the logic of root words. This app uses visual aids, spaced repetition, and structured learning trees to help you learn thousands of words effectively. Track your progress as your vocabulary grows.

**Highlights:** Root word learning method, Visual imagination images, Ebbinghaus Spaced Repetition, Vocabulary tree exploration, Progress tracking garden

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hàng tháng | $1.99 | per month |
| Hàng năm | $9.99 | per year |
| Trọn đời | $19.99 | one-time |


### LearningUtils

[App page](https://appshunter.io/ios/app/learningutils/id6767416112)

This AI-powered study companion helps students process documents privately on their devices. It can summarize readings, generate citations in various styles, translate text, and rewrite content. The app utilizes local AI models for enhanced privacy and security.

**Highlights:** On-device AI processing, Document summarization, APA, MLA, Chicago citation generation, Text translation (16 languages), Paragraph rewriting, Private and no tracking

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is S free?

S is free to download, with in-app purchases available.

### Is LearningUtils free?

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

### Do S or LearningUtils have ads?

S shows ads; LearningUtils does not.

### Which is updated more often, S or LearningUtils?

S ships an update every 3 days, and LearningUtils every 3 days. Most recently, S was updated on October 11, 2026 and LearningUtils on October 12, 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.*