Comparison

Signo Application vs Calam

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Signo Application

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
Read full description

MetaSign a distinctive application that provides instant interpretation service in sign language for people with hearing disabilities. We strive to provide the best ways of communication between all members of society.

About

Calam

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
Read full description

Calam lets you make affordable international calls to any country at rates far lower than traditional carriers. Sign up and get free credit to start calling right away! HOW IT WORKS • Sign up with your phone number • Add credit to your wallet • Call any number worldwide at low rates • See rates before you dial KEY FEATURES Low-Cost International Calls • Make calls to landlines and mobiles worldwide at competitive rates. Save money on international calls without sacrificing quality. Pay As You Go • No monthly fees, no contracts, no commitments. Add credit when you need it and only pay for the minutes you use. Call Over WiFi or Data • No need for cellular minutes. Make calls anywhere you have an internet connection - at home, in the office, or while travelling abroad. Transparent Pricing • See exactly what each call will cost before you dial. Check rates for any country and know your available minutes upfront. Simple Wallet System • Top up your balance with Apple Pay, Google Pay, or card. Quick and secure payments with instant credit. Contact Integration • Access your phone's contacts directly within the app. One tap to call your friends and family anywhere in the world. Call History • Keep track of all your calls with detailed history showing duration, time, and call status. Easily redial recent contacts. Multilingual Support • Full support for English and Arabic with right-to-left interface optimization. PERFECT FOR • Expats and immigrants staying in touch with family back home • Business travellers making international calls • Anyone looking to reduce international calling costs • Travellers who need to call home without roaming charges GETTING STARTED 1. Download Calam and verify your phone number 2. Add funds to your wallet 3. Start calling any number in the world Experience crystal-clear international calls at a fraction of the cost. Download Calam today and stay connected with the people who matter most.

Screenshots

Signo Application4 screens
Calam4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
Signo Application versus Calam: the parameters behind the verdict, then further details
ParameterSigno ApplicationCalam
PriceFreeFree
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Number of ratings11
Update frequencyEvery 2 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size146 MB91 MB
Age rating4+4+
DeveloperMETA SIGN COMPANY FOR SPECIAL NEEDS SERVICESZoalTech Limited

Customer experience

Signo Application

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Calam

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Signo Application

No in-app purchases

None

Calam

No in-app purchases

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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