Comparison

GSM+ Second Phone Number vs SLYTALK

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

Head to head
About

GSM+ Second Phone Number

Obtain multiple virtual phone numbers from over 40 countries without needing an extra SIM card. Use these numbers for calls, texts, and registrations to protect your personal number's privacy. Enjoy affordable international communication and manage your lines easily.

Highlights
  • Multiple virtual phone numbers
  • Supports 40+ countries
  • No extra SIM card needed
  • Make calls and send SMS/MMS
  • Call recording
  • Voicemail creation
  • Call forwarding
Features
Read full description

Cheap Calls for Business and Personal Use Anywhere, Anytime LOOKING FOR A SEPARATE NUMBER FOR PRIVATE COMMUNICATIONS? GSM+ gives you access to multiple phone lines in 40+ countries for business and personal use, all without needing an extra SIM card. Choose a custom number to make calls, send SMS and MMS, and protect the privacy of your real number. Forget the hassle of buying and swapping SIM cards for different numbers. With GSM+, switching between numbers for calls is quick and effortless! Maintain your international number for as long as you desire, and replenish your GSM+ balance with more minutes and SMS. Enjoy making international calls and texts from a different number at the most affordable rates. Calls worldwide are easy and economical with our in-app currency system. GSM+ is perfect for various scenarios, providing additional numbers to use instead of your real phone number: • Online Marketplaces: Safely post ads and communicate using a temporary number. • Dating: Share an alternative number from GSM+ for new connections, ensuring your privacy. • Business Communications: Use GSM+ as a secondary work number to separate professional and personal calls. • Property Rentals and Car Hiring: Remain anonymous and secure by providing a GSM+ number for public services. • Registrations: Sign up for platforms requiring a phone number, including messengers and social networks, without revealing your personal number. Share your actual phone number only with trusted contacts. For all other purposes, GSM+ is your go-to solution! If you wish, you can keep the application away from curious eyes with a PIN code. Other features of the application; - Number blocking. - Ability to disable incoming calls. - Ability to create Voicemail. - Call forwarding. - Ability to turn on/off recordings. - Ability to stop receiving SMS. - Automatic reply to SMS messages. - Ability to turn on/off notifications. - Credit calculation page. - Transaction history page. - SmsActivate alternative. -------------------- About subscriptions: After starting the subscription, the credit amount of the package you selected will be automatically added into your account during each renewal period. Unused credits will not be carried over to the next subscription term. Subscription period is (one) 1 month. In every period, your subscription renews for the amount of the package you selected. Payment will be charged to your iTunes account during confirmation of purchase. Subscriptions automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be identified as well. Subscriptions may be managed by the user and auto-renewal may be turned off in the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://gsmplus.app/docs/privacy.php , Terms Of Use: https://gsmplus.app/docs/tos.php

About

SLYTALK

Securely communicate with state-of-the-art encryption for messages, calls, and video chats. Enjoy a private and clutter-free experience without ads. Designed for those who prioritize privacy and security.

Highlights
  • End-to-end encrypted voice and video calls
  • Secure messaging
  • Ad-free and clutter-free interface
  • Private communication
  • High-definition video calls
Features
Read full description

SlyTalk offers you a revolutionary way to communicate securely. With state-of-the-art encryption technology, SlyTalk ensures that every message, call, and video chat is kept private, giving you peace of mind in every conversation. Whether you're sharing sensitive information or everyday messages, your communications are protected. Key Features: Voice & Video Calls: Experience crystal-clear audio and high-definition video calls, fully secured with end-to-end encryption. No Ads, No Clutter: Enjoy a clean, intuitive interface without any advertisements. Built for Everyone SlyTalk is designed for individuals, professionals, and organizations who prioritize privacy and security without compromising on speed and user experience. Join the SlyTalk community and start communicating with confidence. Download now and take your first step towards secure and private communication! PRICING AND PLANS -Monthly subscription plan for $2.99 per month (Billing will reoccur once a month) FINE PRINT Terms of Use: https://slytalk.com/terms/ Privacy Policy: https://slytalk.com/privacy/

Screenshots

GSM+ Second Phone Number4 screens
SLYTALK4 screens

Verdict

The call

The clearest difference is rating: GSM+ Second Phone Number at 4.6 against SLYTALK's 1.0. GSM+ Second Phone Number also leads on monetization model (free with in-app purchases vs subscription) and ratings volume (761 vs 1). On price, ads, in-app purchases and device support 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. GSM+ Second Phone Number sells 10 in-app purchases, starting at $9.99 per month and SLYTALK sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

GSM+ Second Phone Number holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: GSM+ Second Phone Number has 761 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

GSM+ Second Phone Number ships an update every 3 weeks, SLYTALK every 4 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
GSM+ Second Phone Number versus SLYTALK: the parameters behind the verdict, then further details
ParameterGSM+ Second Phone NumberSLYTALK
PriceFreeFree
Rating4.6 (761 ratings) — better1.0 (1 ratings)
Positive reviews37.3% of reviews—
Number of ratings761 — better1
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size111 MB18 MB
Age rating4+4+
DeveloperMobile VictoryMobileSphere, Ltd

Customer experience

GSM+ Second Phone Number

All ratings757 ratings
Positive89.8%
Neutral2.8%
Negative7.4%
Written reviews75 reviews
Positive37.3%
Neutral2.7%
Negative60.0%

SLYTALK

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

Bugs and requests

GSM+ Second Phone Number

Reported bugs

2 issues
  • Credits deducted without service
  • Numbers becoming inactive quickly

Requested features

2 requests
  • Add support for more countries
  • Improve customer support

SLYTALK

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

GSM+ Second Phone Number

Subscriptions6
  • Canada - Dual Functionality$9.991 Month
  • US - (Call+SMS)$9.991 Month
  • GB - (Call+SMS)$9.991 Month
Show 3 more
  • US- Dual Functionality$14.991 Month
  • UK - Dual Functionality$14.991 Month
  • Auto Credit Tariff #5$19.991 Month
One-time4
  • Phone number purchase$3.99
  • Phone number purchase$9.99
  • Phone number purchase$19.99
Show 1 more
  • Phone number purchase$39.99
1 purchases

SLYTALK

Subscriptions1
  • Monthly Plan$2.991 Month

Questions

Is GSM+ Second Phone Number free?
GSM+ Second Phone Number is free to download, with in-app purchases available.
Is SLYTALK free?
SLYTALK is free to download, with in-app purchases available.
Which has better reviews, GSM+ Second Phone Number or SLYTALK?
GSM+ Second Phone Number is rated higher. GSM+ Second Phone Number averages 4.6 out of 5 from 761 ratings, while SLYTALK averages 1.0 from 1 ratings.
Do GSM+ Second Phone Number or SLYTALK have ads?
Neither GSM+ Second Phone Number nor SLYTALK shows ads.
Which is updated more often, GSM+ Second Phone Number or SLYTALK?
GSM+ Second Phone Number ships an update every 3 weeks, and SLYTALK every 4 months. Most recently, GSM+ Second Phone Number was updated on November 11, 2026 and SLYTALK on November 3, 2026.

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