# Clinical Research Pro Test vs Lingua Logger

The clearest difference is rating: Lingua Logger at 5.0 against Clinical Research Pro Test's 1.0. Lingua Logger also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (6 vs 1). Clinical Research Pro Test's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Clinical Research Pro Test sells 4 in-app purchases, starting at $9.99 per 7 days and Lingua Logger sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Lingua Logger holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Lingua Logger has 6 ratings behind it against 1, so its average is the more settled of the two.

Clinical Research Pro Test ships an update every 3 months, Lingua Logger every 2 weeks. The most recent releases landed on September 19, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Clinical Research Pro Test | Lingua Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/clinical-research-pro-test/id6744563204/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/lingua-logger-study-tracker/id6745210241/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 83 MB | 57 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Erdem Kara](https://appshunter.io/developer/1015700209) | [SWOL LLC (USA)](https://appshunter.io/developer/1601731157) |

## What reviewers say

### Clinical Research Pro Test

[App page](https://appshunter.io/ios/app/clinical-research-pro-test/id6744563204)

Prepare for your Clinical Research Professional Exam with an AI-driven platform offering over 3000 practice questions and realistic mock tests. Track your progress and revise key concepts to build confidence for your examination.

**Highlights:** Over 3000 AI-curated practice questions, Categorized questions by topic, Realistic mock tests with random question selection, User account for progress saving, AI-driven content updates, Targeted section revision

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Subscription | $9.99 | per 7 days |
| Premium - Monthly Subscription | $24.99 | per month |
| Premium-Quarterly Subscription | $49.99 | per 3 months |
| Premium - Yearly Subscription | $99.99 | per year |


### Lingua Logger

[App page](https://appshunter.io/ios/app/lingua-logger-study-tracker/id6745210241)

This app helps you track your language learning progress with detailed logging and visualization tools. Set goals, maintain streaks, and gain insights into your study habits across over 60 languages. Sync your data across devices and export your logs for further analysis.

**Highlights:** Log study time for any language activity, Visualize progress with charts and graphs, Set daily, weekly, or monthly study goals, Maintain daily study streaks, Support for over 60 languages, Export study logs as CSV, Cross-device synchronization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lingua Logger Premium Monthly | $1.99 | per month |
| Lingua Logger Premium Yearly | $14.99 | per year |


## Frequently asked questions

### Is Clinical Research Pro Test free?

Clinical Research Pro Test is free to download, with in-app purchases available.

### Is Lingua Logger free?

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

### Which has better reviews, Clinical Research Pro Test or Lingua Logger?

Lingua Logger is rated higher. Clinical Research Pro Test averages 1.0 out of 5 from 1 ratings, while Lingua Logger averages 5.0 from 6 ratings.

### Do Clinical Research Pro Test or Lingua Logger have ads?

Lingua Logger shows ads; Clinical Research Pro Test does not.

### Which is updated more often, Clinical Research Pro Test or Lingua Logger?

Clinical Research Pro Test ships an update every 3 months, and Lingua Logger every 2 weeks. Most recently, Clinical Research Pro Test was updated on September 19, 2026 and Lingua Logger on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*