# Oi vs OTS Express

The clearest difference is in-app purchases: OTS Express at none against Oi's 4. OTS Express also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.0). Oi's advantage is update cadence (monthly vs every 5 months). On price and ads there is nothing between them.

Both are free to download. Oi sells 4 in-app purchases, starting at $7.99 per 7 days. OTS Express asks for nothing beyond the download.

Oi ships an update monthly, OTS Express every 5 months. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Oi | OTS Express |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Freemium | — |
| Size | 106 MB | 46 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [CYBER ONE LTD](https://appshunter.io/developer/1530625447) | [Rubik Smart Solutions](https://appshunter.io/developer/1483981076) |

## 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 |


### OTS Express

[App page](https://appshunter.io/ios/app/ots-express/id6754541045)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oi free?

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

### Is OTS Express free?

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

### Do Oi or OTS Express have ads?

Neither Oi nor OTS Express shows ads.

### Which is updated more often, Oi or OTS Express?

Oi ships an update monthly, and OTS Express every 5 months. Most recently, Oi was updated on October 6, 2026 and OTS Express on October 25, 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.*