# Signo Application vs Calam

The clearest difference is rating: Signo Application at 5.0 against Calam's 1.0. Calam's advantage is update cadence (every 8 days vs every 2 months). On price, ratings volume, 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.

Signo Application holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Signo Application ships an update every 2 months, Calam every 8 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Signo Application | Calam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/signo-application/id1642515920/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/calam/id6756227922/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 146 MB | 91 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [META SIGN COMPANY FOR SPECIAL NEEDS SERVICES](https://appshunter.io/developer/1682033482) | [ZoalTech Limited](https://appshunter.io/developer/1569361441) |

## What reviewers say

### Signo Application

[App page](https://appshunter.io/ios/app/signo-application/id1642515920)

This application offers instant sign language interpretation, bridging communication gaps for individuals with hearing disabilities. It aims to foster better communication among all members of society.

**Highlights:** Instant sign language interpretation, Communication bridge for hearing disabilities, Promotes societal communication, Accessible on iOS devices

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

**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 Signo Application free?

Signo Application 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, Signo Application or Calam?

Signo Application is rated higher. Signo Application averages 5.0 out of 5 from 1 ratings, while Calam averages 1.0 from 1 ratings.

### Do Signo Application or Calam have ads?

Neither Signo Application nor Calam shows ads.

### Which is updated more often, Signo Application or Calam?

Signo Application ships an update every 2 months, and Calam every 8 days. Most recently, Signo Application was updated on October 14, 2026 and Calam on October 8, 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.*