Comparison

REVGO Voice vs Calam

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

Head to head
About

REVGO Voice

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
Read full description

With REVGO Voice, every REVOICE customer can move a fixed line call from their home or business phone to their mobile device — including smartphones, tablets and laptops — with the push of a button. Through the app, users can access their REVOICE calls, and voicemails and enjoy convenient features including two-way video calling and instant messaging for one-on-one or group conversations.

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

REVGO Voice4 screens
Calam4 screens

Verdict

The call

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.

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

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
REVGO Voice versus Calam: the parameters behind the verdict, then further details
ParameterREVGO VoiceCalam
PriceFreeFree
Rating4.3 (28 ratings) — better1.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings28 — better1
Update frequencyEvery 10 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size214 MB91 MB
Age rating4+4+
DeveloperCable Bahamas LtdZoalTech Limited

Customer experience

REVGO Voice

All ratings27 ratings
Positive85.2%
Neutral0.0%
Negative14.8%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Calam

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

In-app purchases

None

REVGO Voice

No in-app purchases

None

Calam

No in-app purchases

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.

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