# Zadarma vs TONNA

The clearest difference is rating: TONNA at 5.0 against Zadarma's 3.3. TONNA also leads on update cadence (every 5 days vs every 2 months). Zadarma's advantage is monetization model (free vs paid) and ratings volume (69 vs 1). On price, ads, in-app purchases and device support 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 3.3. That said, the two scores are not equally well evidenced: Zadarma has 69 ratings behind it against 1, so its average is the more settled of the two.

Zadarma ships an update every 2 months, TONNA every 5 days. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Zadarma | TONNA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (69 ratings)](https://appshunter.io/ios/app/zadarma/id905897821/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tonna/id6444378209/reviews)** |
| Number of ratings | **69** | 1 |
| Positive reviews | 41.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 84 MB | 13 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Zadarma Project](https://appshunter.io/developer/984451132) | [IMI Media, Ltd.](https://appshunter.io/developer/914981362) |

## What reviewers say

### Zadarma

[App page](https://appshunter.io/ios/app/zadarma/id905897821)

This VoIP app allows you to make and receive calls and SMS using a virtual number and PBX. It offers features like call transfer, recording, and an AI voice agent to automate incoming calls. Seamlessly integrate with CRM and ERP systems for enhanced business communication.

**Highlights:** Virtual numbers and PBX, Call transfer, Call recordings, SMS messaging, AI Voice Agent, CRM integration

**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 Zadarma free?

Zadarma 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, Zadarma or TONNA?

TONNA is rated higher. Zadarma averages 3.3 out of 5 from 69 ratings, while TONNA averages 5.0 from 1 ratings.

### Do Zadarma or TONNA have ads?

Neither Zadarma nor TONNA shows ads.

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

Zadarma ships an update every 2 months, and TONNA every 5 days. Most recently, Zadarma was updated on September 24, 2026 and TONNA on September 20, 2026.

---

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