# REVGO Voice vs Calam

The clearest difference is rating: REVGO Voice at 4.3 against Calam's 1.0. REVGO Voice also leads on ratings volume (28 vs 1). Calam's advantage is update cadence (every 8 days vs every 10 months). 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.

REVGO Voice holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: REVGO Voice has 28 ratings behind it against 1, so its average is the more settled of the two.

REVGO Voice ships an update every 10 months, Calam every 8 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | REVGO Voice | Calam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (28 ratings)](https://appshunter.io/ios/app/revgo-voice/id1205441465/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/calam/id6756227922/reviews) |
| Number of ratings | **28** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 214 MB | 91 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cable Bahamas Ltd](https://appshunter.io/developer/815453428) | [ZoalTech Limited](https://appshunter.io/developer/1569361441) |

## What reviewers say

### REVGO Voice

[App page](https://appshunter.io/ios/app/revgo-voice/id1205441465)

Seamlessly transfer your landline calls to your mobile device. Access voicemails, engage in two-way video calls, and send instant messages for individual or group chats.

**Highlights:** Transfer landline calls to mobile, Access voicemails, Two-way video calling, Instant messaging, One-on-one and group chats

**Features:** Siri integration

**In-app purchases:** none


### Calam

[App page](https://appshunter.io/ios/app/calam/id6756227922)

Make affordable international calls to any country with transparent, pay-as-you-go pricing. Connect with loved ones worldwide using your internet connection, without needing cellular minutes or worrying about roaming charges.

**Highlights:** Low-cost international calls, Pay-as-you-go pricing, Call over WiFi or data, Transparent rates before dialing, Simple wallet system for top-ups, Contact integration, Call history tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is REVGO Voice free?

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

### Is Calam free?

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

### Which has better reviews, REVGO Voice or Calam?

REVGO Voice is rated higher. REVGO Voice averages 4.3 out of 5 from 28 ratings, while Calam averages 1.0 from 1 ratings.

### Do REVGO Voice or Calam have ads?

Neither REVGO Voice nor Calam shows ads.

### Which is updated more often, REVGO Voice or Calam?

REVGO Voice ships an update every 10 months, and Calam every 8 days. Most recently, REVGO Voice was updated on November 2, 2026 and Calam on October 30, 2026.

---

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