# Callimo vs USM Connect Messenger

The clearest difference is rating: USM Connect Messenger at 5.0 against Callimo's 4.2. USM Connect Messenger also leads on review sentiment (100% vs 80%). Callimo's advantage is ratings volume (29 vs 1) and chart position (#130 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

USM Connect Messenger holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Callimo has 29 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Callimo's written reviews are positive against 100% of USM Connect Messenger's.

## The numbers

| Metric | Callimo | USM Connect Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (29 ratings)](https://appshunter.io/ios/app/callimo/id6763991790/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/usm-connect-messenger/id6814721148/reviews)** |
| Number of ratings | **29** | 1 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Free | Free |
| Best chart rank | **#130** | — |
| Size | 6 MB | 22 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aydonat Celebi](https://appshunter.io/developer/1895589687) | [USM Tech, Inc.](https://appshunter.io/developer/1883779002) |

## What reviewers say

### Callimo

[App page](https://appshunter.io/ios/app/callimo/id6763991790)

**Currently charting:** #130 Top Free · Social Networking (US App Store)

Connect with friends globally through fast, secure, and easy-to-use video calls and instant messaging. Create group chats to stay in touch with multiple people simultaneously.

**Highlights:** Instant messaging, Group chats, Secure communication, Easy-to-use interface, Video calls

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

**In-app purchases:** none


### USM Connect Messenger

[App page](https://appshunter.io/ios/app/usm-connect-messenger/id6814721148)

This communication app simplifies everyday conversations with direct messaging, voice, and video calls. Share media and manage contacts from a clean, modern interface. It offers secure account authentication and customizable appearance options.

**Highlights:** Private one-to-one messaging, Voice and video calls, Photo and media sharing, Contact discovery and management, User profiles and avatars, Push notifications, Light and dark appearance

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

**In-app purchases:** none


## Frequently asked questions

### Is Callimo free?

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

### Is USM Connect Messenger free?

USM Connect Messenger is free to download, with no in-app purchases.

### Which has better reviews, Callimo or USM Connect Messenger?

USM Connect Messenger is rated higher. Callimo averages 4.2 out of 5 from 29 ratings, while USM Connect Messenger averages 5.0 from 1 ratings.

### Do Callimo or USM Connect Messenger have ads?

Neither Callimo nor USM Connect Messenger shows ads.

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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.*