# FLOWBIO vs Una Watch

The clearest difference is review sentiment: Una Watch at 100% against FLOWBIO's 0%. Una Watch also leads on rating (4.1 vs 3.0) and update cadence (every 5 days vs fortnightly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Una Watch holds the better App Store score, 4.1 against 3.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 0% of FLOWBIO's written reviews are positive against 100% of Una Watch's.

FLOWBIO ships an update fortnightly, Una Watch every 5 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | FLOWBIO | Una Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/flowbio/id1614407048/reviews) | **[4.1 (7 ratings)](https://appshunter.io/ios/app/una-watch/id6743759749/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | Free |
| Size | 37 MB | 67 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [FLOWBIO LTD](https://appshunter.io/developer/1607898930) | [UNA Watch Ltd](https://appshunter.io/developer/1804357916) |

## What reviewers say

### FLOWBIO

[App page](https://appshunter.io/ios/app/flowbio/id1614407048)

This app analyzes sweat data to provide personalized hydration and recovery strategies for athletes. It connects to a sweat sensor to track fluid and sodium loss, offering tailored plans and pre-session predictions to optimize performance.

**Highlights:** Personalized hydration strategies, Tailored recovery plans, Pre-session performance predictions, Intake logging, Support for electrolyte brands, Integrations with Garmin, Wahoo, Zwift, Coros

**Features:** macOS Compatibility

**In-app purchases:** none


### Una Watch

[App page](https://appshunter.io/ios/app/una-watch/id6743759749)

Sync activities, analyze data, and customize your wearable device. Connect to other applications for a comprehensive health and fitness experience.

**Highlights:** Sync activities, Analyze data, Customize watch settings, Connect to third-party apps, Easy-to-use interface

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

**In-app purchases:** none


## Frequently asked questions

### Is FLOWBIO free?

FLOWBIO is free to download, with no in-app purchases.

### Is Una Watch free?

Una Watch is free to download, with no in-app purchases.

### Which has better reviews, FLOWBIO or Una Watch?

Una Watch is rated higher. FLOWBIO averages 3.0 out of 5 from 2 ratings, while Una Watch averages 4.1 from 7 ratings.

### Do FLOWBIO or Una Watch have ads?

Neither FLOWBIO nor Una Watch shows ads.

### Which is updated more often, FLOWBIO or Una Watch?

FLOWBIO ships an update fortnightly, and Una Watch every 5 days. Most recently, FLOWBIO was updated on October 5, 2026 and Una Watch 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.*