# ESOM vs Oi

The clearest difference is in-app purchases: ESOM at none against Oi's 4. ESOM also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). Oi's advantage is update cadence (monthly vs every 10 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. ESOM asks for nothing beyond the download.

ESOM ships an update every 10 months, Oi monthly. The most recent releases landed on October 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ESOM | Oi |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | — | Freemium |
| Size | 52 MB | 106 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Relenfeize inc](https://appshunter.io/developer/987482551) | [CYBER ONE LTD](https://appshunter.io/developer/1530625447) |

## What reviewers say

### ESOM

[App page](https://appshunter.io/ios/app/esom/id1672645886)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ESOM free?

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

### Is Oi free?

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

### Do ESOM or Oi have ads?

Neither ESOM nor Oi shows ads.

### Which is updated more often, ESOM or Oi?

ESOM ships an update every 10 months, and Oi monthly. Most recently, ESOM was updated on October 30, 2026 and Oi on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*