# O vs TONNA

The clearest difference is rating: TONNA at 5.0 against O's 3.7. O's advantage is monetization model (free vs paid) and ratings volume (7 vs 1). On price, update cadence, 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.

TONNA holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: O has 7 ratings behind it against 1, so its average is the more settled of the two.

O ships an update every 6 days, TONNA every 5 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | O | TONNA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (7 ratings)](https://appshunter.io/ios/app/o-key-ai/id1668994065/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tonna/id6444378209/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 80 MB | 14 MB |
| Requires iOS | **16.6** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [inqoob](https://appshunter.io/developer/1635571963) | [IMI Media, Ltd.](https://appshunter.io/developer/914981362) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-key-ai/id1668994065)

Streamline business interactions and manage professional contacts efficiently. Schedule meetings, add notes to contacts, and share your QR business card for seamless networking. This app helps you stay organized and build stronger professional relationships.

**Highlights:** Contact Management, Schedule Presentations & Sales Meetings, Add Comments & Notes to Contacts, QR Business Card Creation & Sharing, User-friendly Interface

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

**In-app purchases:** none


### TONNA

[App page](https://appshunter.io/ios/app/tonna/id6444378209)

Facilitates secure business transactions from initial request to final payment. It streamlines the deal cycle, offering transparency and protection for both buyers and suppliers, leading to faster and more reliable outcomes.

**Highlights:** Secure deal management, Request to payment processing, Buyer deposit protection, Supplier work transparency, Automatic payouts, Loan and factoring requests

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is TONNA free?

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

### Which has better reviews, O or TONNA?

TONNA is rated higher. O averages 3.7 out of 5 from 7 ratings, while TONNA averages 5.0 from 1 ratings.

### Do O or TONNA have ads?

Neither O nor TONNA shows ads.

### Which is updated more often, O or TONNA?

O ships an update every 6 days, and TONNA every 5 days. Most recently, O was updated on November 3, 2026 and TONNA on November 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.*