# Oi vs I.O.

The clearest difference is update cadence: I.O. at every 2 days against Oi's monthly. I.O. also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Oi sells 4 in-app purchases, starting at $7.99 per 7 days and I.O. sells 1 in-app purchase, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.

Oi ships an update monthly, I.O. every 2 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Oi | I.O. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (20 ratings)](https://appshunter.io/ios/app/oi-ai-assistant/id6462895560/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 106 MB | 34 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [CYBER ONE LTD](https://appshunter.io/developer/1530625447) | [IO.OI. Inc.](https://appshunter.io/developer/1891882426) |

## What reviewers say

### Oi

[App page](https://appshunter.io/ios/app/oi-ai-assistant/id6462895560)

This AI-powered application offers instant answers to your questions, generates stunning images from text descriptions, and summarizes documents. It also provides professional presentation creation, high-quality translation, and advanced image analysis to enhance your daily tasks.

**Highlights:** Instant photo/text question answering, AI-powered image creation, PDF/web link summarization, Professional presentation generation, High-quality translation, Advanced image analysis

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oi Weekly Subscription | $7.99 | per 7 days |
| Oi Monthly Subscription | $12.99 | per month |
| Oi 3 Months Subscription | $29.99 | per 3 months |
| Oi Yearly Subscription | $99.99 | per year |


### I.O.

[App page](https://appshunter.io/ios/app/io/id6761871771)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IO Pro | $10.00 | per month |


## Frequently asked questions

### Is Oi free?

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

### Is I.O. free?

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

### Do Oi or I.O. have ads?

Neither Oi nor I.O. shows ads.

### Which is updated more often, Oi or I.O.?

Oi ships an update monthly, and I.O. every 2 days. Most recently, Oi was updated on October 6, 2026 and I.O. on October 24, 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.*