# hDrop App vs KoopAI

The clearest difference is rating: KoopAI at 5.0 against hDrop App's 3.7. hDrop App's advantage is monetization model (free vs free with in-app purchases) and ratings volume (11 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. hDrop App sells 2 in-app purchases, starting at $12.99 per month and KoopAI sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

KoopAI holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: hDrop App has 11 ratings behind it against 2, so its average is the more settled of the two.

hDrop App ships an update fortnightly, KoopAI every 10 days. Both last shipped on October 2, 2026.

## The numbers

| Metric | hDrop App | KoopAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (11 ratings)](https://appshunter.io/ios/app/hdrop-app/id1525159399/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/koopai/id6796975615/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 97 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [hDrop Technologies Inc.](https://appshunter.io/developer/1525159401) | [SeakelpAI, Inc.](https://appshunter.io/developer/6796975617) |

## What reviewers say

### hDrop App

[App page](https://appshunter.io/ios/app/hdrop-app/id1525159399)

This wearable sensor tracks fluid and sodium loss through sweat during exercise. It provides personalized hydration insights based on your unique physiology, helping endurance athletes optimize their performance. Analyze sweat loss, sodium intake, and rate trends to build a tailored hydration strategy.

**Highlights:** Wearable sweat sensor, Fluid and sodium loss tracking, Personalized hydration strategy, Sweat rate trend analysis, Workout data analysis, Comparison across conditions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hDrop Lab | $12.99 | per month |
| hDrop Lab | $89.99 | per year |


### KoopAI

[App page](https://appshunter.io/ios/app/koopai/id6796975615)

Receive personalized ultrarunning training plans based on your experience, goals, and available time. This AI coach provides daily workouts, tracks your progress, and answers your training questions. Connect activity providers to keep your history updated and adjust your plan as needed.

**Highlights:** Personalized ultrarunning training plans, AI coach for training and race prep questions, Workout feedback and progression tracking, Volume, elevation, fitness, and fatigue trends, Connect activity providers, Adjustable training plans

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KoopAI Monthly | $19.99 | per month |
| KoopAI Yearly | $219.99 | per year |


## Frequently asked questions

### Is hDrop App free?

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

### Is KoopAI free?

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

### Which has better reviews, hDrop App or KoopAI?

KoopAI is rated higher. hDrop App averages 3.7 out of 5 from 11 ratings, while KoopAI averages 5.0 from 2 ratings.

### Do hDrop App or KoopAI have ads?

Neither hDrop App nor KoopAI shows ads.

### Which is updated more often, hDrop App or KoopAI?

hDrop App ships an update fortnightly, and KoopAI every 10 days. Most recently, hDrop App was updated on October 2, 2026 and KoopAI on October 2, 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.*