REVGO Voice vs Calam
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Transfer landline calls to mobile
- Access voicemails
- Two-way video calling
- Instant messaging
- One-on-one and group chats
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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.
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.
- 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
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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
Verdict
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
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.
| Parameter | REVGO Voice | Calam |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (28 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 28 — better | 1 |
| Update frequency | Every 10 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 214 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | Cable Bahamas Ltd | ZoalTech Limited |
Customer experience
REVGO Voice
Calam
In-app purchases
REVGO Voice
No in-app purchases
Calam
No in-app purchases









