Nidaa: Call Screening & Rules

Nidaa is an Android call screening assistant designed to help you decide which incoming calls to answer and apply your own rules to callers.

Incoming Call Screening
Screen incoming phone calls using Android's CallScreeningService.
Reject unwanted calls from numbers on your blocked list automatically.
Receive warning notifications for suspicious patterns and risky number ranges.
Inspect the last screened call with context on how the caller was evaluated.

Your Number Rules
Block specific numbers to reject their incoming calls immediately.
Trust important numbers so they pass without pattern warnings.
Manage your saved rules at any time directly on your device.

Local Notes and Tags
Attach personal notes and custom tags to any phone number.
Review your saved notes and tags from contact search or the last screened call.
All notes and tags remain stored locally on your device.

Contact Search and Dialer Handoff
Search contacts by name, number, or keypad digits.
Open numbers directly in your phone's dialer to place calls.

Accessibility Options
High-contrast theme and simple layout mode for visual clarity.
Optional spoken caller announcements using Android text-to-speech.