# Fullpower® Sleep vs Solius

The clearest difference is update cadence: Solius at every 3 weeks against Fullpower® Sleep's every 3 months. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Fullpower® Sleep against 5.0 for Solius. Both are backed by a comparable volume of ratings — 30 and 70 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Fullpower® Sleep ships an update every 3 months, Solius every 3 weeks. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Fullpower® Sleep | Solius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (30 ratings)](https://appshunter.io/ios/app/fullpower-sleep/id6479544236/reviews) | **[5.0 (70 ratings)](https://appshunter.io/ios/app/solius/id6762333424/reviews)** |
| Number of ratings | 30 | **70** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 93 MB | 237 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fullpower®](https://appshunter.io/developer/282995850) | [Solius Labs, Inc.](https://appshunter.io/developer/1314011843) |

## What reviewers say

### Fullpower® Sleep

[App page](https://appshunter.io/ios/app/fullpower-sleep/id6479544236)

This app requires specific hardware and an invitation from your provider for sleep monitoring. It facilitates account setup, guides hardware installation, and automatically sends sleep data to your provider. Users can view real-time device status and historical sleep data, with an option to share with Apple Health.

**Highlights:** Provider-issued invitation required, Guided hardware setup, Automatic sleep monitoring, Real-time device status, Historical sleep data viewing, Apple Health integration

**In-app purchases:** none


### Solius

[App page](https://appshunter.io/ios/app/solius/id6762333424)

This app pairs with a UVB light therapy device to deliver personalized doses of UVB light based on your skin tone. It offers guided sessions, reminders, and progress tracking for year-round health benefits. The device is FDA-cleared and requires no prescription.

**Highlights:** Personalized UVB dosing based on skin tone, FDA-cleared over-the-counter device, Short weekly sessions (approx. 5 minutes), Guided session setup and safety checks, Weekly reminders and progress tracking, Therapy history and trends

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

**In-app purchases:** none


## Frequently asked questions

### Is Fullpower® Sleep free?

Fullpower® Sleep is free to download, with no in-app purchases.

### Is Solius free?

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

### Which has better reviews, Fullpower® Sleep or Solius?

Solius is rated higher. Fullpower® Sleep averages 4.9 out of 5 from 30 ratings, while Solius averages 5.0 from 70 ratings.

### Do Fullpower® Sleep or Solius have ads?

Neither Fullpower® Sleep nor Solius shows ads.

### Which is updated more often, Fullpower® Sleep or Solius?

Fullpower® Sleep ships an update every 3 months, and Solius every 3 weeks. Most recently, Fullpower® Sleep was updated on October 1, 2026 and Solius on October 9, 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.*