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Corta Spam
What it is
Corta Spam is a free, open-source Android app that screens incoming calls against rules before the phone rings. A matching call can be allowed, blocked, or answered with a greeting. Rules cover specific numbers, wildcard patterns, country codes, quiet hours, repeat callers, and the app’s spam list. The call log identifies the rule behind each decision, while blocked-call statistics summarize daily, weekly, and monthly activity from local midnight. Users can trigger a manual JSON backup and inspect it before sharing. An optional experimental auto-responder answers blocked calls with a greeting supplied by the user. The maker says the app declares no internet permission, opts out of Android automatic backup, and keeps call logs on the device. Languages listed are Spanish, English, Brazilian Portuguese, and Hindi. The project uses the MIT License. The Android APK builds; an iOS shell runs, but call blocking remains pending a CallDirectory extension.
For and against
For
- Free with no ads or in-app purchases
- Detailed customizable blocking rules
- Rule explanations in the call log
- Manual inspectable JSON backups
- No internet permission declared
Against
- Android is the supported platform
- Auto-responder is experimental
- iOS call blocking is still pending
- No community reports integration
The verdict
Corta Spam offers local, configurable call decisions with transparent logs and backups. Android users get the full listed feature set; iOS support remains limited while call blocking awaits a CallDirectory extension.
Who it suits
It suits Android users who want rule-based call screening, local call records, backups, and optional automated replies without ads or in-app purchases.
Plans and prices
Free
Free to use · no ads · no in-app purchases
Read 8 Oct 2026 · cpinan.github.io
On the record
- Auto-responder
- An optional experimental auto-responder answers blocked calls with a greeting supplied by the user.cpinan.github.io · read 8 Oct 2026
- Backup
- Users can trigger a manual JSON backup and inspect it before sharing.cpinan.github.io · read 8 Oct 2026
- Blocking rules
- Rules include blocked and allowed numbers, wildcard patterns, country codes, quiet hours, repeat callers, and an in-app spam list.cpinan.github.io · read 8 Oct 2026
- Call log
- The app’s call log identifies which rule made each call decision.cpinan.github.io · read 8 Oct 2026
- Integrations
- The maker offers GitHub Sponsors, Ko-fi, PayPal, and, for supporters in Peru, Yape and Plin donation options.cpinan.github.io · read 8 Oct 2026
- iOS limitations
- The maker’s specification says iOS cannot support action-based blocking at call time or the scripted auto-responder.github.com · read 8 Oct 2026
- Languages
- The app lists Spanish, English, Brazilian Portuguese, and Hindi.cpinan.github.io · read 8 Oct 2026
- License
- The project is open source under the MIT License.github.com · read 8 Oct 2026
- Platform status
- The repository says the Android APK builds; its iOS shell builds and runs, but iOS call blocking is still pending a CallDirectory extension.github.com · read 8 Oct 2026
- Privacy
- The maker says the app declares no internet permission and opts out of Android automatic backup, keeping call logs on the device.cpinan.github.io · read 8 Oct 2026
- Purpose
- Corta Spam screens incoming calls against user rules before the phone rings, then lets them ring, blocks them, or answers with a greeting.cpinan.github.io · read 8 Oct 2026
- Statistics
- It provides blocked-call statistics by day, week, and month, calculated from local midnight.cpinan.github.io · read 8 Oct 2026
- Support
- The maker provides support by email at [email protected] or through a GitHub issue.cpinan.github.io · read 8 Oct 2026
