Best scam detector apps (2026)

These tools solve overlapping but different problems — a spam-call blocker and a message scam-checker aren't direct substitutes. We've avoided star ratings on purpose: the right choice is the one that matches the threat you're facing.

Scam Scanner is an Australian-built scam-checker. You give it a suspicious text, email, link, QR code, screenshot or photo and it returns a structured verdict: a 0–100 trust score across six confidence tiers, the specific red flags, and what to do next. It carries an impersonation database of around 93 brands relevant to Australian users (Australia Post, the ATO, myGov, the big banks, toll operators and more) and points to Australian reporting channels like Scamwatch and ACMA.

Where it doesn't compete: it isn't a background call or SMS blocker — it won't screen incoming calls the way a caller-ID app does. It's for understanding a specific message you already have. Try it free in the browser at /check, or get the free iPhone app for camera, screenshot and QR scanning.

Caller ID and spam-call blocker that names unknown callers and flags spam, fraud and robocalls before you answer.

What it does well

• Excellent caller ID — identifies unknown numbers and flags suspected spam, fraud and robocalls in real time using a huge crowd-sourced number database.
• Strong live call and SMS filtering, with an AI assistant that can screen calls and tell you why someone is ringing.
• Massive global install base, so its spam-number reputation data is deep and constantly updated.

Where it differs from Scam Scanner

• Centred on phone numbers and live calls/SMS — it identifies and blocks numbers rather than analysing the wording of an arbitrary message you paste in.
• Doesn't analyse a screenshot, photo, QR code or pasted email for scam content the way a dedicated scam-checker does.
• Caller ID and full features lean on a large contacts/number database and a Premium subscription; it isn't built around per-message scam verdicts.

Truecaller is the tool you want for screening who is calling. Scam Scanner is the tool for the message itself — paste a suspicious text, email, link or QR code, or scan a screenshot or photo, and get a structured verdict with a trust score, the red flags, and what to do next. The two are complementary: Truecaller tells you the number looks dodgy; Scam Scanner tells you whether the message is a scam and why.

Read the full Scam Scanner vs Truecaller comparison →

Call and text spam blocker that automatically screens robocalls and known spam numbers, with answer bots that waste scammers' time.

What it does well

• Very effective at automatically blocking robocalls and known spam numbers, using a large database of reported numbers and audio fingerprints.
• Its 'Answer Bots' famously tie up scam callers with lifelike recordings, and it filters spam texts as well as calls.
• Set-and-forget protection — once configured it works in the background to cut down unwanted calls and texts.

Where it differs from Scam Scanner

• Built around blocking unwanted calls and texts by number/audio pattern, not around analysing the content of a message you want checked.
• Its number reputation data and tuning are strongest for North American calling patterns rather than Australian sender IDs and local brands.
• Doesn't read a screenshot, photo, QR code or pasted email and explain why it is or isn't a scam.

RoboKiller is about stopping the call or text from reaching you. Scam Scanner is about understanding a specific message you already have — you paste or scan it and get a plain-English verdict with the warning signs. RoboKiller reduces the noise; Scam Scanner answers 'is this particular message safe?', with Australian context and reporting steps built in.

Read the full Scam Scanner vs RoboKiller comparison →

Free AI scam-detection chatbot from Bitdefender that checks texts, emails, links, images and QR codes you send it via web or chat apps.

What it does well

• Genuinely good free AI scam-checker — you can send a text, email, link, image or QR code and get a verdict, backed by Bitdefender's established security research.
• Available through familiar channels (web, WhatsApp, Facebook Messenger, Discord) with nothing to install, which makes it very easy to reach.
• Strong global threat intelligence behind the analysis from a well-known security vendor.

Where it differs from Scam Scanner

• Global by design — it isn't specifically tuned for Australian brands, sender IDs and reporting channels the way a local tool is.
• It's a chatbot experience rather than a dedicated app with on-device camera and screenshot scanning, scan history, or a phone-number analyser.
• Returns a verdict and advice but isn't oriented around a 0–100 trust score with the six-tier confidence framing Scam Scanner uses.

Both are free AI scam-checkers that read texts, emails, links, images and QR codes, and Scamio is a strong, credible tool. Scam Scanner's difference is Australian focus and depth: an impersonation database of around 93 brands relevant to Australia, a six-tier confidence verdict with a 0–100 trust score, a dedicated iPhone app with camera, screenshot and QR scanning plus a Vision scene classifier, and a free web checker at /check for quick text and link checks.

Read the full Scam Scanner vs Bitdefender Scamio comparison →