Say goodbye to spam texts: betting, scam and ad messages never reach your inbox
HiSMS is a smart SMS app and spam blocker for Android. Spam messages make no notification, are quarantined and permanently deleted from your phone after 24 hours. Battery-friendly, privacy-respecting, in 4 languages.
Android 8.0 and up · No account required · Your messages are processed only on your device by default
Why HiSMS?
It doesn’t just flag spam, it never lets it reach your inbox. And it won’t drain your battery.
Smart spam filter
Wildcard rules like casino* and *bahis; letter-case, accents and tricks like c4sino are caught automatically.
Quarantine and permanent deletion
Spam makes no notification and is deleted from the device after 24 hours; the same sender and content are never accepted again.
Allow list
Senders you trust, such as your bank or courier, are never blocked.
Rule packs updated from the server
Betting, scam and loan-ad packs arrive automatically and stay up to date (Pro).
Optional AI analysis
Reviews messages and suggests new spam patterns (Pro).
Inbox scan
Clean up old spam in bulk with a list grouped by sender.
Community scores
See votes and comments about senders; numbers are masked.
Safe link preview
See where shortened links lead without putting your phone at risk.
Get rid of spam in 3 steps
Make HiSMS your default
Android only lets the default SMS app block spam. The setup wizard guides you step by step.
Spam is filtered automatically
Betting, scam and advertising messages go to the Spam tab without any notification. Bank messages and verification codes are not affected.
Permanently deleted after 24 hours
If something is blocked by mistake, undo it with “Not spam”. Otherwise the message is permanently deleted and the same source is never accepted again.
Free and Pro
Core protection is free. Pro keeps your spam defenses up to date for you.
| Feature | Free | Pro |
|---|---|---|
| Quarantine, permanent deletion after 24 hours | ✓ | ✓ |
| Allow list, category tabs, copy verification code | ✓ | ✓ |
| Your own rules (wildcards, links, prefixes) | Limited | Unlimited |
| Rule packs updated from the server | — | ✓ |
| AI analysis and deep scan | — | ✓ |
| Community pool rules | ✓ | ✓ |
Our apps
HiSMS
AvailableSMS blocker and spam filter
More apps on the way
HiS App is building more mobile apps. Follow the blog.
Blog: guides to staying spam-free
Practical articles on spam SMS, scams and mobile security.
A Battery-Friendly SMS App: How to Cut Background Drain
How do SMS and spam-filter apps affect your battery? The logic behind apps that don’t run constantly in the background, schedule smartly and restrict themselves on low battery.
8 Things to Check When Choosing a Spam Filter App
How do you choose the best SMS spam blocker? An 8-point checklist covering privacy, battery use, accuracy, false alarms and ease of use.
Why Are Shortened Links (bit.ly, t.ly) Dangerous? How to Preview Them Safely
Shortened links in SMS hide the real address. Why scammers love them, how to check them without tapping, and what a safe preview is.
Frequently asked questions
Is HiSMS free?
Yes, core spam protection is free. Rule packs updated from the server, AI analysis and unlimited rules are part of Pro.
Does it have to be my default SMS app to block spam?
Yes. Android only lets the default SMS app block and delete messages. You can switch back to your old app at any time.
Are my messages sent to a server?
Not by default; all filtering runs on your device. If you turn on “Server analysis”, messages that don’t match any rule are sent over an encrypted connection for analysis and are not stored.
Can I undo a wrongly blocked message?
Yes. It waits in the Spam tab for 24 hours; tap “Not spam” to move it back and add the sender to your allow list.
Does the app use a lot of battery?
No. It doesn’t run continuously in the background; sync and cleanup run a few times a day when the system finds it convenient. Server analysis is postponed on low battery.
Why do I see a warning when installing outside Google Play?
Android 13 and up restricts SMS access for apps installed outside the store the first time. Two steps in the install guide allow it once.
Clean up your inbox today
Keep spam, betting and scam messages off your phone with HiSMS.