# FORM Swim vs hDrop App

The clearest difference is rating: FORM Swim at 4.7 against hDrop App's 3.9. FORM Swim also leads on ratings volume (3.5K vs 13). hDrop App's advantage is monetization model (free vs free with in-app purchases). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. FORM Swim sells 3 in-app purchases, starting at $14.99 per month and hDrop App sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

FORM Swim holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: FORM Swim has 3.5K ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 52% of FORM Swim's written reviews are positive against 47% of hDrop App's.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | FORM Swim | hDrop App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.5K ratings)](https://appshunter.io/ios/app/form-swim/id1321117442/reviews)** | [3.9 (13 ratings)](https://appshunter.io/ios/app/hdrop-app/id1525159399/reviews) |
| Number of ratings | **3.5K** | 13 |
| Positive reviews | **51.9% of reviews** | 47.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 220 MB | 60 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Form Athletica](https://appshunter.io/developer/1321117441) | [hDrop Technologies Inc.](https://appshunter.io/developer/1525159401) |

## What reviewers say

### FORM Swim

[App page](https://appshunter.io/ios/app/form-swim/id1321117442)

This app acts as an underwater coach, providing real-time visual feedback through smart goggles to improve swimming technique and performance. It offers guided workouts, open water navigation, and detailed post-swim analysis, syncing data with popular fitness platforms.

**Highlights:** Real-time in-goggle coaching, Open water digital compass, Guided pool workouts, Workout generation from text, Comprehensive swim metric analysis, Automatic data syncing

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FORM Membership | $14.99 | per month |
| FORM Membership | $119.00 | per year |
| FORM Premium Annual | $119.00 | per year |

**What reviewers like**

- 🚀 Real-time metrics and data
- 👍 Comfortable and well-designed goggles
- 💡 Motivating and engaging workout features
- 🔍 Detailed swim analytics and tracking
- 🤝 Responsive and helpful customer service

**What reviewers complain about**

- 🔒 Subscription required to access full features
- 🔍 Inaccurate data tracking and stroke detection
- 👀 Reduced field of vision with goggles
- 🤔 Confusing and cluttered app interface
- 🐛 Connectivity and syncing issues

**Reported bugs**

- Timer and distance tracking inconsistencies
- App crashes and freezes
- Unreliable heart rate monitoring

**Requested features**

- Ability to create custom workouts
- Integration with other fitness platforms (e.g. Garmin, Apple Health)
- Open water swim distance tracking without GPS
- Current lap time display during swim
- Export data for long-term analysis


### 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 |


## Frequently asked questions

### Is FORM Swim free?

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

### Is hDrop App free?

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

### Which has better reviews, FORM Swim or hDrop App?

FORM Swim is rated higher. FORM Swim averages 4.7 out of 5 from 3.5K ratings, while hDrop App averages 3.9 from 13 ratings.

### Do FORM Swim or hDrop App have ads?

Neither FORM Swim nor hDrop App shows ads.

### Which is updated more often, FORM Swim or hDrop App?

FORM Swim ships an update every 2 weeks, and hDrop App every 2 weeks. Most recently, FORM Swim was updated on November 11, 2026 and hDrop App on November 7, 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.*