# ACT Mastery 2017 Prep vs Luwi

The clearest difference is review sentiment: ACT Mastery 2017 Prep at 95% against Luwi's 50%. ACT Mastery 2017 Prep also leads on ratings volume (130 vs 3) and iOS requirement (9.0 vs 15.0). Luwi's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.7). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ACT Mastery 2017 Prep sells 1 one-off in-app purchase and Luwi sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Luwi holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ACT Mastery 2017 Prep has 130 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 95% of ACT Mastery 2017 Prep's written reviews are positive against 50% of Luwi's, so the app with the better star average is not the one people write more warmly about.

ACT Mastery 2017 Prep ships an update every 6 weeks, Luwi every 10 days. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ACT Mastery 2017 Prep | Luwi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (130 ratings)](https://appshunter.io/ios/app/act-mastery-2017-prep/id1023503333/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/luwi/id1492974275/reviews)** |
| Number of ratings | **130** | 3 |
| Positive reviews | **95.2% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 60 MB | 229 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [gWhiz, LLC](https://appshunter.io/developer/286531712) | [Erkan SIRIN](https://appshunter.io/developer/617648754) |

## What reviewers say

### ACT Mastery 2017 Prep

[App page](https://appshunter.io/ios/app/act-mastery-2017-prep/id1023503333)

Prepare for the ACT exam with comprehensive, section-specific test prep. Access over 1,000 practice questions, study strategies, and flashcards developed by ACT insiders. Improve your score by focusing on weak areas with detailed explanations and progress tracking.

**Highlights:** Section-specific test prep, 1,000+ practice questions, Study strategies and tips, Terminology flashcards, Progress tracking and statistics, Offline access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Content | Free | one-time |

**What reviewers like**

- 👍 Free and accessible
- 🚀 Excellent for ACT prep
- 💡 Detailed explanations for answers
- 📚 Organized content by subject
- ✅ Helps identify weaknesses

**What reviewers complain about**

- ❓ Confusing question wording
- 🐛 Occasional loading issues
- 💰 Pro version seems pricey
- ⚠️ Some questions have errors/typos

**Reported bugs**

- App won't load
- Occasional not getting it to load

**Requested features**

- Add a timer for practice sessions
- Update the app for more features
- Unlock more content in the free version


### Luwi

[App page](https://appshunter.io/ios/app/luwi/id1492974275)

Embark on a language learning journey with interactive lessons, AI tutors, and engaging RPG games. Practice pronunciation, grammar, and vocabulary with tools like handwriting practice and a sentence generator. Access a free book library and enjoy a user interface supporting 24 languages.

**Highlights:** 11 engaging language lessons, Friendly robot tutors, Fun RPG games, Grammar guide and error checking, Word and sentence generator, Public domain book library, Handwriting spelling practice

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Luwi Premium | $12.99 | one-time |


## Frequently asked questions

### Is ACT Mastery 2017 Prep free?

ACT Mastery 2017 Prep is free to download, with in-app purchases available.

### Is Luwi free?

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

### Which has better reviews, ACT Mastery 2017 Prep or Luwi?

Luwi is rated higher. ACT Mastery 2017 Prep averages 4.7 out of 5 from 130 ratings, while Luwi averages 5.0 from 3 ratings.

### Do ACT Mastery 2017 Prep or Luwi have ads?

Neither ACT Mastery 2017 Prep nor Luwi shows ads.

### Which is updated more often, ACT Mastery 2017 Prep or Luwi?

ACT Mastery 2017 Prep ships an update every 6 weeks, and Luwi every 10 days. Most recently, ACT Mastery 2017 Prep was updated on September 22, 2026 and Luwi on September 23, 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.*