# iO vs RYZA

The clearest difference is in-app purchases: iO at none against RYZA's 2. iO also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). RYZA's advantage is update cadence (fortnightly vs every 7 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. RYZA sells 2 in-app purchases, starting at $4.99 per month. iO asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for iO against 5.0 for RYZA. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

iO ships an update every 7 months, RYZA fortnightly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | iO | RYZA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/io-fly/id1004071859/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ryza-affirmation-alarm-clock/id6774783734/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 54 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lemonage Software](https://appshunter.io/developer/1004071858) | [JHOOX LLC](https://appshunter.io/developer/6774783736) |

## What reviewers say

### iO

[App page](https://appshunter.io/ios/app/io-fly/id1004071859)

This application works with specific hardware to configure, calibrate, and monitor sensor and actuator devices that adhere to the IO-Link standard.

**Highlights:** Configure IO-Link devices, Calibrate sensor devices, Monitor actuator devices, Supports IO-Link standard, Works with iO-Fly hardware

**Features:** macOS Compatibility

**In-app purchases:** none


### RYZA

[App page](https://appshunter.io/ios/app/ryza-affirmation-alarm-clock/id6774783734)

This app helps you start your day with intention by requiring you to speak your chosen affirmation aloud to turn off the alarm. It offers a unique 'Read to Wake' feature and provides a variety of affirmations to set a positive direction for your day.

**Highlights:** Read your affirmation aloud to stop alarm, No snooze button, Voice recognition for dismissal, Variety of affirmations, Home screen widget, Light and dark mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rise Premium Monthly | $4.99 | per month |
| RYZA Premium Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is iO free?

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

### Is RYZA free?

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

### Which has better reviews, iO or RYZA?

iO and RYZA are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do iO or RYZA have ads?

RYZA shows ads; iO does not.

### Which is updated more often, iO or RYZA?

iO ships an update every 7 months, and RYZA fortnightly. Most recently, iO was updated on November 6, 2026 and RYZA on October 31, 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.*