# The90 Gem — Real-time UV tracker

> Jewelry-inspired UV sensor tracks skin exposure for sun protection and health benefits. (iPhone/iPad app by The90, Inc..)

- Source: https://appshunter.io/ios/app/the90-gem/id6758100822 (this page in markdown: same URL + `.md`)
- Developer: [The90, Inc.](https://appshunter.io/developer/1870863367)
- Category: Health & Fitness, Weather
- Price: Free
- Rating: 4.29/5 from 7 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 96 MB
- Languages: English
- Released: 2026-06-09
- Data updated: 2026-08-22
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/the90-gem/id6758100822/reviews.md

## What is The90 Gem?

The jewelry-inspired UV sensor that tracks what your skin actually experiences, so you can protect how you age while harnessing the health benefits of the sun.

## Key features

- Real-time UV tracking
- Skin exposure monitoring
- Aging protection
- Sun health benefits
- Jewelry-inspired design

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/the90-gem/id6758100822/reviews.md

### 5/5 — Awesome!

*2026-07-10*

Very informative to see real time accumulation of UVA (aging) UVB (burn) and Vitamin D exposure daily versus guessing on a UV index forecast. Love it!

### 4/5 — Great app maybe some room to grow

*2026-07-10*

I really like this app! It has been a great tool for helping me monitor my UV exposure and stay more aware of my time in the sun.

One feature I'd love to see in a future update is the ability to indicate when I'm wearing UV-protective clothing or using an umbrella, so the app could factor that into my overall UV exposure.

Overall, I love it and can't wait to see how the app continues to improve!

### 5/5 — Best invention!

*2026-07-10*

My favorite feature is the vitamin D level tracking- I love that it tracks how much I am getting daily ensuring I get enough every day. Also, the aging score is so motivating — being able to own how long and when to get out of the sun is a game changer. Simple, clear, and it’s changed how I think about a daily habit I used to ignore completely. Highly recommend.

### 5/5 — Very helpful

*2026-07-10*

I’ve been using the gem for about a week and have been very interested in what I’d learn. Long story short I was getting a ton of sun I didn’t realize.

### 1/5 — Gets everything wrong

*2026-07-05*

I put information like we when and how often I apply sunscreen but it immediately deletes. The apply sunscreen button should be in conjunction with the daily or multiple times a day application. No edit feature if I've already applied sunscreen and forgot to log. Not tracking sun exposure or uv levels that well for literally being what the device is for. It misses a lot of sun exposure and always says the uv index is lower that every other weather app says by 2-3 levels. Can't click on the charts to get more information.

## Frequently asked questions about The90 Gem

### What is The90 Gem?

The90 Gem is a jewelry-inspired UV sensor that tracks your skin's real-time UV exposure. It helps you protect your skin from aging and utilize the sun's health benefits.

### How accurate is The90 Gem's UV tracking?

The app tracks what your skin actually experiences, providing real-time data on UV exposure. Specific accuracy metrics are not detailed in the provided information.

### What are the health benefits of using The90 Gem?

By monitoring UV exposure, The90 Gem helps users harness the health benefits of the sun while protecting their skin from potential damage and aging.

### Does The90 Gem have ads?

No, The90 Gem does not contain advertisements.

### What devices is The90 Gem compatible with?

The90 Gem is compatible with iPhones and iPods.

### How often is The90 Gem updated?

The latest version, 1.1.2, was released on July 13, 2026, indicating regular updates. The app was initially released on June 9, 2026.

### What is the age rating for The90 Gem?

The90 Gem has an age rating of 4+, making it suitable for a wide range of users.

### What is the user sentiment for The90 Gem?

The app has a rating of 4.3 stars from 7 ratings, suggesting generally positive user feedback.

## Version history (last 3 releases)

### 1.1.2 — 2026-07-13

- Updated UVA visualisations and accumulation logic
- Updated text prompts for the widgets
- Email Support icon added to the App Settings
- Bug fixes and minor improvements

### 1.1.1 — 2026-06-25

- WeatherKit support for UV data
- Updated Sun Exposure Chart
- General bug fixes and improvements

### 1.1.0 — 2026-06-10

No release notes.

## Related topics

[ninety](https://appshunter.io/ios/topics/ninety)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*