GSM Control vs NumberBox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GSM Control
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This alarm system embodies modern industrial design in a user-friendly, wire-free home security package. This alarm system is GSM-based (requires a SIM card) and suitable for any DIY home improvement project, ensuring you and your family have that extra peace of mind without monthly monitoring fees. The App is totally free. Once paired to your control panel, you can easily manage and interact with the entire system – such as arm, disarm, set exit/entry delays, add/remove/rename accessories, play user-definable onsite recordings and engage in two-way audio – directly on your smartphone anywhere, anytime. What this alarm system can do for your home or small shop/SOHO: l You can add up to 50 wireless sensors and accessories based on your needs. Those sensors and accessories allow for intrusion, flood, smoke and gas detection. l You can set exit and entry delays as you wish, so you and your family can go out and come back home at your own pace, without having to fumble around in your pocket for your mobile phone or remote control, to arm or disarm your alarm system. l Pre-set routines can be entered so that your alarm system will automatically guard your small shop or welcome you home right on the dot. Specific delays for specific zones are also possible. l Siren duration and volume can be adjusted per your need, with the maximum volume at 90 decibels. l Multiple users and smartphones can be enabled to control and interact with one single alarm system once paired. You can take turns watching over your property and loved ones back home.
NumberBox
This app helps you identify unwanted calls by allowing users to report and tag spam or telemarketing numbers. All submissions are anonymous and help build a community-driven database to protect users from potential scams.
- Voluntarily report unwanted numbers
- Manually add tags to phone numbers
- Identify spam and telemarketing calls
- Anonymous tag submissions
- Privacy-focused data policy
- In-app support
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NumberBox is a simple and secure tool that allows users to voluntarily report unwanted or spam phone numbers to help keep the community safe. Users can manually add tags to phone numbers — for example, “Scammer,” “Telemarketing,” or “Spam.” All tags are submitted voluntarily by users to help others recognize potentially unwanted calls. Privacy & Data Policy NumberBox does not collect, store, or share any personal data. The app does not access contacts, call history, messages, or any other private information. All user-submitted tags are stored anonymously and are not linked to personal identities. Contact & Support If you have any questions, or wish to modify or remove user-submitted data, please contact us through the in-app support section or via our official support email.
Screenshots
Verdict
The clearest difference is update cadence: NumberBox at every 2 months against GSM Control's every 17 months. GSM Control's advantage is iOS requirement (7.0 vs 15.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GSM Control ships an update every 17 months, NumberBox every 2 months. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.
| Parameter | GSM Control | NumberBox |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (559 ratings) — better |
| Positive reviews | — | 61.0% of reviews |
| Number of ratings | — | 559 — better |
| Update frequency | Every 17 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 85 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Chuango Security Technology Corporation | Marvan Salemi |
Bugs and requests
GSM Control
Not enough reviews yet to summarise bugs or requests.
NumberBox
Reported bugs
5 issues- App stopped working after latest update
- Unable to identify any numbers despite core function
- Update installation failures
- Incorrect name matching for phone numbers
- App displays personal information without user consent
Requested features
5 requests- Offline functionality
- Location information display
- Anonymous call profile display
- Expanded database for specific regions (Yemen)
- Expanded number database
In-app purchases
GSM Control
No in-app purchases
NumberBox
No in-app purchases









