TL;DR: Registering on the DND list plus using your phone's built-in call-screening feature covers most nuisance calls for free — a dedicated app like Truecaller adds real value mainly for identifying unknown numbers before you answer.
Spam and fraud calls are a daily nuisance in India, and several apps and built-in phone features now help filter them.
What to Look For
Truecaller remains the most widely used caller ID and spam-blocking app in India, while Android and iOS both include a built-in 'silence unknown callers' or similar feature that needs no third-party app at all. TRAI's DND (Do Not Disturb) registry also blocks commercial telemarketing calls, though it doesn't stop fraud calls from unregistered numbers.
The Bottom Line
Registering on the DND list plus using your phone's built-in call-screening feature covers most nuisance calls for free — a dedicated app like Truecaller adds real value mainly for identifying unknown numbers before you answer.
If this looks similar to something else you've seen, it's worth reading Best Parental Control Apps for Indian Families.
This pattern shows up elsewhere too — see Best Password Managers Available in India.
Frequently Asked Questions
What’s the short answer?
Registering on the DND list plus using your phone's built-in call-screening feature covers most nuisance calls for free — a dedicated app like Truecaller adds real value mainly for identifying unknown numbers before you answer.
What should I actually look for?
Spam and fraud calls are a daily nuisance in India, and several apps and built-in phone features now help filter them.