GSM+ Second Phone Number vs Spark Builder Admin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multiple virtual phone numbers
- Supports 40+ countries
- No extra SIM card needed
- Make calls and send SMS/MMS
- Call recording
- Voicemail creation
- Call forwarding
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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
Spark Builder Admin
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This app is built for Spark Builder users to scan QR codes and live preview the mobile version of their Shopify stores. Spark Builder helps simplify the time-consuming task of building and customizing your mobile storefront into a few guided steps. Our mission is to empower non-technical merchants to see and test their mobile app experience instantly: 1. Log into your Shopify dashboard 2. Design and customize your mobile store 3. Scan a secure QR code to preview your app on a real device
Screenshots
Verdict
The clearest difference is in-app purchases: Spark Builder Admin at none against GSM+ Second Phone Number's 21. Spark Builder Admin also leads on update cadence (every 9 days vs every 3 weeks). GSM+ Second Phone Number's advantage is device support (3 vs 1). On price, ads and iOS requirement 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. GSM+ Second Phone Number sells 20 in-app purchases, starting at $3.99 per month. Spark Builder Admin asks for nothing beyond the download.
GSM+ Second Phone Number ships an update every 3 weeks, Spark Builder Admin every 9 days. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.
| Parameter | GSM+ Second Phone Number | Spark Builder Admin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (757 ratings) — better | — |
| Positive reviews | 37.3% of reviews | — |
| Number of ratings | 757 — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 111 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobile Victory | Gitspark Technologies, LLC |
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
Spark Builder Admin
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GSM+ Second Phone Number
- Credits Tariff #1$3.991 Month
- Credits Tariff #3$7.991 Month
- Credits Tariff #4$9.991 Month
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- Canada - Dual Functionality$9.991 Month
- US - (Call+SMS)$9.991 Month
- GB - (Call+SMS)$9.991 Month
- US- Dual Functionality$14.991 Month
- Canada - Dual Functionality$14.991 Month
- UK - Dual Functionality$14.991 Month
- Auto Credit Tariff #5$19.991 Month
- Puerto Rico-Dual Functionality$24.991 Month
- Auto Credit Tariff #6$29.991 Month
- Australia - Dual Functionality$39.991 Month
- GB - (Call+SMS)$59.991 Year
- Phone number purchase$0.99
- Phone number purchase$3.99
- Phone number purchase$9.99
Show 3 moreShow fewer
- Phone number purchase$19.99
- Phone number purchase$39.99
- Phone number purchase$69.99
Spark Builder Admin
No in-app purchases
Questions
Is GSM+ Second Phone Number free?
Is Spark Builder Admin free?
Do GSM+ Second Phone Number or Spark Builder Admin have ads?
Which is updated more often, GSM+ Second Phone Number or Spark Builder Admin?
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