Kabe
Sound familiar?
- Same prefix range hits you over and over — +81 (JP), +1 (US), +44 (UK), +86 (CN)…
- Robocalls cycle through numbers, swapping the last few digits to dodge single-number blocks
- You block one number, then a similar one calls right after
- Scam SMS impersonating Apple, Amazon, or your bank ("your account is suspended…")
- Unknown alphanumeric senders (like "Appie-ID") with suspicious links
What Kabe does
Calls: Block entire prefix ranges
Register the leading digits of any country's number → one rule blocks every call across the whole range. Works for +81 (JP), +1 (US), +86 (CN), +44 (UK), +49 (DE), and any other country format.
Whitelist exceptions
Numbers you actually need go on the exception list — they won't be blocked even if they match a rule.
SMS: Auto-block scams
Automatically blocks alphanumeric senders (with no phone number) impersonating Apple, Amazon, banks and other brands. Zero setup required.
Visual-spoof detection
Catches digit-disguised letters like "App1e" mimicking "Apple" or "Amaz0n" mimicking "Amazon".
On-device only
Phone numbers and SMS content never leave your phone. We don't track, run analytics, or ship ads.
Free, for now
All features are free right now — no ads. Like the app? An optional tip jar lets you support the team.
How range blocking works
You register the leading digits — everything after is blocked
Telemarketers and scam call centers cycle through a single prefix range, swapping the last few digits to dodge per-number blocklists. Kabe lets you register the prefix — every number that follows falls into the blocked range. One rule kills the whole range at once.
How scam SMS blocking works
iOS asks Kabe to block unknown-sender SMS
Kabe ships with a global brand database (Apple, Amazon, PayPal, WhatsApp, etc.) plus regional brands (major banks and carriers in Japan, China, Korea, Europe, US, and more), and blocks senders that are spelled similarly to a brand or use digits to disguise letters. iOS routes blocked messages to the "Unknown & Junk" inbox. Everything runs locally on your iPhone — content never leaves your device.
Simple, focused interface
Calls: just register the prefix ranges you want blocked. Type a few leading digits → one rule blocks the entire range. Need an exception? Add it to the whitelist.
SMS: zero setup. iOS sends unknown-sender messages to Kabe, which auto-blocks suspicious alphanumeric senders. iOS routes them to "Junk".
All matching happens on your device. We never see your numbers or SMS content.