# RIO vs Atom

The clearest difference is rating: RIO at 5.0 against Atom's 3.5. RIO also leads on update cadence (every 2 weeks vs every 2 months). Atom's advantage is review sentiment (25% vs 0%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

RIO holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews complicate that: 0% of RIO's written reviews are positive against 25% of Atom's, so the app with the better star average is not the one people write more warmly about.

RIO ships an update every 2 weeks, Atom every 2 months. The most recent releases landed on September 9, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | RIO | Atom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rio/id1161393389/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/atom/id1418360229/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 35 MB | 80 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Servicios Imagenologicos de Occidente, S.A. de C.V.](https://appshunter.io/developer/1161393388) | [Edgar Barba](https://appshunter.io/developer/1418360228) |

## What reviewers say

### RIO

[App page](https://appshunter.io/ios/app/rio/id1161393389)

Manage your healthcare appointments, access lab and imaging results, and generate invoices easily. Stay informed about your health with reminders and exclusive rewards.

**Highlights:** Schedule appointments, Access study results, Generate invoices, Manage appointments and reminders, View RIO Rewards points, Receive notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Atom

[App page](https://appshunter.io/ios/app/atom/id1418360229)

This platform helps fitness centers attract and retain clients by creating measurable goals and challenges. It enables personalized routine creation, real-time progress tracking with smart devices, and automated check-ins. Users can sync data with Apple Health for more accurate insights.

**Highlights:** Client acquisition and retention tools, Goal and challenge creation, Real-time progress tracking, Personalized routine builder, Automated check-ins, Apple Health integration

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is RIO free?

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

### Is Atom free?

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

### Which has better reviews, RIO or Atom?

RIO is rated higher. RIO averages 5.0 out of 5 from 2 ratings, while Atom averages 3.5 from 2 ratings.

### Do RIO or Atom have ads?

Neither RIO nor Atom shows ads.

### Which is updated more often, RIO or Atom?

RIO ships an update every 2 weeks, and Atom every 2 months. Most recently, RIO was updated on September 9, 2026 and Atom on June 3, 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.*