# True REST Float Spa vs HydroFlow Ocean

The clearest difference is review sentiment: HydroFlow Ocean at 100% against True REST Float Spa's 31%. HydroFlow Ocean also leads on rating (5.0 vs 2.5). True REST Float Spa's advantage is in-app purchases (none vs 1) and ratings volume (41 vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HydroFlow Ocean sells 1 one-off in-app purchase. True REST Float Spa asks for nothing beyond the download.

HydroFlow Ocean holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: True REST Float Spa has 41 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 31% of True REST Float Spa's written reviews are positive against 100% of HydroFlow Ocean's.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | True REST Float Spa | HydroFlow Ocean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (41 ratings)](https://appshunter.io/ios/app/true-rest-float-spa/id1532046788/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hydroflow-ocean/id6794131333/reviews)** |
| Number of ratings | **41** | 3 |
| Positive reviews | 30.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 46 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 9+ | 12+ |
| Developer | [True REST](https://appshunter.io/developer/1034007400) | [Ningzhe Wen](https://appshunter.io/developer/6794131335) |

## What reviewers say

### True REST Float Spa

[App page](https://appshunter.io/ios/app/true-rest-float-spa/id1532046788)

Easily book appointments at a float spa, find directions, and view the latest updates and photos. Discover a relaxing experience with convenient access to spa information.

**Highlights:** Book appointments, Get directions, View Facebook updates, Access photo gallery, Spa information

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

**In-app purchases:** none


### HydroFlow Ocean

[App page](https://appshunter.io/ios/app/hydroflow-ocean/id6794131333)

This app transforms daily water intake into a growing virtual ocean filled with collectible marine creatures. Track your hydration, earn achievements, and visualize your progress with interactive widgets and Apple Watch integration.

**Highlights:** One-tap water logging, Living ocean visualization, Collectible marine creatures, Daily and weekly analytics, Home screen widget, Apple Watch integration, Optional Apple Health sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroFlow Pro | $3.99 | one-time |


## Frequently asked questions

### Is True REST Float Spa free?

True REST Float Spa is free to download, with no in-app purchases.

### Is HydroFlow Ocean free?

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

### Which has better reviews, True REST Float Spa or HydroFlow Ocean?

HydroFlow Ocean is rated higher. True REST Float Spa averages 2.5 out of 5 from 41 ratings, while HydroFlow Ocean averages 5.0 from 3 ratings.

### Do True REST Float Spa or HydroFlow Ocean have ads?

Neither True REST Float Spa nor HydroFlow Ocean shows ads.

### Which is updated more often, True REST Float Spa or HydroFlow Ocean?

True REST Float Spa ships an update every 5 weeks, and HydroFlow Ocean every 5 weeks. Most recently, True REST Float Spa was updated on September 25, 2026 and HydroFlow Ocean on September 20, 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.*