GSM Modem APIs for free sending SMS or receiving SMS in any project or language.
Pros & Cons
Free SMS sending and receiving APIs
JSON/HTTP endpoints for quick integration
Supports multiple programming languages
Regular maintenance with UI updates and bug fixes
Not ranked in any top lists
Moderate overall rating (230 ratings)
Last 30 days show modest growth (~132 downloads)
About GSM Modem (SMS)
GSM Modem (SMS) is a tools app developed by Sindhi Developers.
Download Statistics
GSM Modem (SMS) has been downloaded 52 thousand times. In the last 30 days, the app was downloaded 120 times.
User Ratings
GSM Modem (SMS) is rated 3.46 out of 5 stars. The rating is based on 230 ratings.
App Information
GSM Modem (SMS) is FREE to download. The APK download size is 10.25 MB. The latest version available is 8.7. The last update was on April 8, 2026.
Technical Requirements
GSM Modem (SMS) requires Android 4.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2018.
Description
GSM Modem (SMS) android app designed for students who are working on projects and want free SMS sending and free SMS receiving functionality in their projects.
GSM Modem (SMS) exposes set of APIs for two possible operations.
1. Sending SMS (from your project using JSON APIs). For Example:: http://192.168.1.102:8090/SendSMS?username=sadiq&password=12345☎=0300xxxxxxx&message=Text-Message
2. Receiving SMS (in your project). For Example:: http://192.168.1.104/sindhitutorials.com/public/api/test
Supported Languages: Java, Spring, C, C++, PHP, Laravel, Codeigniter, C#, ASP.NET etc.
Recent changes: - smoother Home screen: Main content scrolls when it doesn’t fit on small displays.
- Consistent UI scale: Shared app_* dimensions across screens (phones, tablets with a centered max width, landscape tweaks) for aligned padding, type, and control sizes.
- Gradle: Updated Groovy DSL to recommended property = value style; optional HTML problems report disabled via gradle.properties to reduce noisy console output.
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★★★★★
Great app. I was able to send sms to multiple numbers. But I can only send 60 characters per message. Should use GSM-7 encoding.
★★★★★
Dear sir, You did good job, Support for many people. How to get sent message by variable? So we will get sent message by variable then we will redirect this page to other page to complete process. Thanks Dear sir, Thank you for reply. The message was sent by get method url. The sms sent message result is also same url. Is it possible to provide, the scent sms message result is another url by same get method? Thanks
★★★★★
It's so good. But can you Please make it for 2 sim connection? Its only send sms from one sim. But Android have 2 sim card slot.
★★☆☆☆
It reboots my GSM tabled. Tablet has android 7. Please advise.
★★☆☆☆
I'm giving u one star because there are so many apps like this already I'll rate you 5 stars and can pay if You can build an app like this which would work from live server in Pakistan
★★☆☆☆
This app tries to get around google play security by being a front for the "real" app which it requires you to download from outside google play. Hard to trust this.
★★☆☆☆
Work only, when mobile is connected to Wi-Fi. While using mobile data it shows error, unable to connect network. Why it is not working without Wi-Fi network?
Google Play Rankings for GSM Modem (SMS)
This app is not ranked
Technologies used by GSM Modem (SMS)
14 permissions·29 libraries
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