ScamCheck is a free browser tool that scores suspicious SMS, email, and DMs from 0–99 using pattern matching (urgency, lookalike domains, gift-card demands, bank/USPS impersonation, and more). No account. No install.
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Maker
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Inspiration: A family member almost paid a fake "redelivery fee" from a text pretending to be USPS. It
looked completely legit at a glance — logo, urgent tone, a link that seemed reasonable. That's when it
hit me how fast these texts move and how little time people have to sanity-check them before tapping.
Problem: Most scam-checking advice is "just be careful," which doesn't help in the 10 seconds someone's
staring at a text deciding whether to click. Non-technical folks — parents, grandparents — are the main
targets and have the least tooling built for them.
Approach: Built ScamCheck to do the sanity-check for you — paste the text, get a 0–99 risk score plus
the specific red flags it found (urgency language, lookalike domains, gift-card/wire demands, brand
impersonation). Everything runs client-side, nothing gets sent anywhere, no signup, works on a phone in
a browser tab.
Evolution during launch prep: Started as just the text checker, then I added a link checker and phone
number checker since those come up in the same scam patterns, plus plain-English guides for the most
common scams (USPS, bank/Zelle, IRS, Medicare). Also added an optional $5 printable "Family Scam Defense
Kit" for people who wanted something physical to put on a parent's fridge — the free tool stays free
either way.
Would love feedback on false positives/negatives or patterns I should add.
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@tony_curtis I just gave ScamCheck an upvote. The fact that it came from a real family experience makes the problem feel very real, and I like that everything runs locally for privacy. Have you tested it with scam messages from different countries to see how well it catches regional tactics?
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The explanation behind the score may be even more valuable than the score itself. Does it show exactly which signals look suspicious?
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Honestly super useful, I pasted in one of those weird USPS texts and it flagged the urgency language and sketchy link right away. No account needed is kind of a lifesaver when you're already suspicious about clicking anything.
@tony_curtis I just gave ScamCheck an upvote. The fact that it came from a real family experience makes the problem feel very real, and I like that everything runs locally for privacy. Have you tested it with scam messages from different countries to see how well it catches regional tactics?
The explanation behind the score may be even more valuable than the score itself. Does it show exactly which signals look suspicious?
Honestly super useful, I pasted in one of those weird USPS texts and it flagged the urgency language and sketchy link right away. No account needed is kind of a lifesaver when you're already suspicious about clicking anything.