Best App to Block Spam Calls in 2026

Hiya is our pick for most people because its free tier does real work. It flags and blocks spam and fraud calls using number reputation, and it does so without requiring access to your contacts. That privacy stance matters, since many caller ID apps build their database from user contact lists. On Android, Hiya can act as the default phone app, so blocking happens at the moment a call arrives rather than after a missed call.

Premium adds call screening, which asks unknown callers for a name and reason before your phone rings, plus more frequent spam updates and a larger offline caller database. Those extras help if unknown calls still get through on the free tier. Check the exact premium price and features in your app store before paying, since Hiya packaging has varied between iPhone and Android.

Truecaller is the best-known caller ID app in the world, and that scale is its main strength. When an unknown number calls, Truecaller is more likely than most rivals to show a name, a category, or a spam label, including for numbers from other countries. It also sorts spam texts, which helps when the same scam moves from calls to messages. For readers who get calls from many countries, that coverage is hard to match.

The trade is privacy and ads. The free version shows ads, and the app asks for contacts and other permissions that privacy-minded readers may not want to grant. Read the permission prompts carefully and turn off extras you do not use. Premium removes ads and adds features such as call recording on Android, but prices vary by store and country, so confirm the price shown at checkout.

RoboKiller takes the most aggressive approach in this list. It uses audio fingerprinting to recognise the recorded message itself, not just the number, so it can keep blocking when scammers change numbers. When a spam call slips through, an Answer Bot can pick up and play a recorded conversation that keeps the caller busy. That feature is satisfying to read about, and it also ties up scammer lines.

RoboKiller also screens calls in real time and filters spam texts, which makes it a full package rather than a single trick. The downside is price and setup: there is a free trial, but continued use needs a subscription, and aggressive screening can occasionally catch a wanted call. If robocalls dominate your phone, the trial is worth running for a week before you judge it.

Nomorobo suits readers who want protection without tweaking settings all day. It checks incoming calls against a list of known robocallers and silences the bad ones before your phone rings. The mobile Basic plan covers call blocking and identification, while higher tiers add real-time screening, voicemail transcription, and neighbour-spoof blocking for numbers that mimic your area code.

Nomorobo also stands out for landline users. Its old free landline protection ended on 1 January 2026, but a paid landline subscription returned later, priced at $39.99 per year for one line in recent listings. That matters for households helping older relatives, since a home phone has no app store to install a blocker from. Check carrier support for the higher mobile tiers before paying, since some features vary by carrier.

YouMail is a good pick if voicemail is part of the problem. It replaces your carrier voicemail with visual voicemail, transcripts, and spam handling, so you can read a message without listening to a long recording. Spam callers can be blocked or sent to a greeting that tells them the number is out of service, which can reduce repeat calls from the same source. Custom greetings for contacts are a nice touch for small businesses.

The free tier covers the basics, but the fuller feature set sits in paid plans, so check the current pricing page before you rely on a paid feature. Setup also takes a few more steps than installing a simple blocker, since voicemail routing has to change. If you rarely check voicemail, a simpler blocker may suit you better.

Call Control appeals to readers who like control. You can block by category, build your own lists, and use community reports to catch new spam numbers early. Scheduling options help at night or during work hours, when even a single spam ring is a nuisance. It is a practical middle ground between a fully automatic blocker and manual blocking in your phone settings.

The app is less polished than the leaders, and feature details vary between iPhone and Android, so check the store listing for your phone. It also works best when you spend a few minutes setting rules up front. If you want a set-and-forget app, Hiya or Nomorobo may fit better.

Mr. Number is the simplest free option here. It blocks calls from numbers linked to known scams, telemarketers, and numbers on your own block list, without asking you to pay for the basics. That makes it a good first step for anyone who has never used a blocker and wants to test whether an app helps before spending money. Setup is short, and the app stays out of the way once running.

The limits are equally clear. You do not get the screening, transcripts, or text filtering of paid rivals, and caller ID coverage is narrower than Truecaller. If Mr. Number cuts most of your spam, you may never need to pay. If aggressive robocalls still get through, move up to RoboKiller or Hiya Premium rather than adding a second free blocker.

Should I Answer is a community-driven blocker that rates numbers from user reports and lets you block by rating. It suits readers who prefer a lighter app without a subscription push. An offline database option helps when you want blocking to work without constant data use, and the rating view makes it easy to see why a number was flagged before you decide to block it.

Coverage can vary by country, since community databases grow where users report most. The design is also plainer than Hiya or Truecaller. Still, for a free, no-pressure blocker, it is a solid choice, especially as a second layer alongside your carrier tools.