# listerCompass vs Thea

The clearest difference is price: Thea at Free against listerCompass's $5.99. Thea also leads on review sentiment (93% vs 50%) and rating (4.9 vs 1.0). listerCompass's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Thea is free to download; listerCompass costs $5.99 up front. Thea sells 2 in-app purchases, starting at $12.00 per month. listerCompass asks for nothing beyond the download.

Thea holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Thea has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of listerCompass's written reviews are positive against 93% of Thea's.

listerCompass ships an update every 5 months, Thea monthly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | listerCompass | Thea |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/listercompass/id532918731/reviews) | **[4.9 (2.6K ratings)](https://appshunter.io/ios/app/thea-study-smart/id6742800289/reviews)** |
| Number of ratings | 1 | **2.6K** |
| Positive reviews | 50.0% of reviews | **92.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 7 MB | 4 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Gordon Lister](https://appshunter.io/developer/1725074221) | [Thea Study](https://appshunter.io/developer/1800055800) |

## What reviewers say

### listerCompass

[App page](https://appshunter.io/ios/app/listercompass/id532918731)

This app is a stereographic compass designed for structural geologists. It allows users to measure and record foliations and lineations in the field, log descriptions, and export data in various formats, including KML for Google Earth.

**Highlights:** Measure foliations and lineations, Record traverse information on a map, Log on-the-fly data descriptions, Export data in KML and other formats, Supports UTM and latitude-longitude, Multiple data format options

**Features:** macOS Compatibility

**In-app purchases:** none


### Thea

[App page](https://appshunter.io/ios/app/thea-study-smart/id6742800289)

Transform your course materials into interactive study tools with an AI-powered platform. Upload notes, PDFs, or videos to generate flashcards, practice tests, and summaries. Learn efficiently and master your subjects with personalized study plans.

**Highlights:** AI-powered study material transformation, Interactive flashcards and game modes, Adaptive learning question generation, Practice test simulation, Automatic summarization and guide creation, Multi-language support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $12.00 | per month |
| Yearly | $48.00 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful AI features
- 💰 Free version available
- 📚 Effective for studying and learning
- 🎓 Useful for AP and nursing exams

**What reviewers complain about**

- 🔍 Lack of spaced repetition setting
- 🔒 Potential for paywalls in the future

**Reported bugs**

- Answers not mixed up in matching game

**Requested features**

- Spaced repetition setting
- More customization options


## Frequently asked questions

### Is listerCompass free?

listerCompass costs $5.99, with no in-app purchases.

### Is Thea free?

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

### Which has better reviews, listerCompass or Thea?

Thea is rated higher. listerCompass averages 1.0 out of 5 from 1 ratings, while Thea averages 4.9 from 2.6K ratings.

### Do listerCompass or Thea have ads?

Neither listerCompass nor Thea shows ads.

### Which is updated more often, listerCompass or Thea?

listerCompass ships an update every 5 months, and Thea monthly. Most recently, listerCompass was updated on November 1, 2026 and Thea on November 4, 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.*