Most "is this site a scam?" questions get answered in the first two Google results. For the last few years those results have been ScamAdviser and a handful of thin review-farm clones. GACS is the newer entrant — built specifically for the 2026 threat surface (wallet drains, AI-voice fraud, romance-recovery loops) that URL-only checkers were never designed for. This is the honest side-by-side.
If you want the interactive version with a live scanner, the full GACS vs ScamAdviser comparison hub has both tools running in parallel on the same URL.
Coverage: what each tool actually checks
ScamAdviser is a domain-reputation engine. Feed it a URL, it returns a 1–100 trust score based on WHOIS age, SSL, Alexa-style traffic estimates, and user reviews. That's it. Wallet address, phone number, Telegram handle, or a screenshot of a WhatsApp broker? Not in scope.
GACS was built as a multi-surface scam registry. The free Safe Scanner accepts URLs, USDT-TRC20 / BTC / ETH / BSC wallets, phone numbers, and social handles, and returns a verdict in ~4 seconds against 250k+ verified fraud signals. The Risk & Recon deep report layers on chain-analysis, sibling-domain detection, and infrastructure correlation.
- URL check — both tools
- Wallet address check — GACS only
- Phone / WhatsApp / Telegram check — GACS only
- Reverse-image / broker screenshot check — GACS only
- Free public scam registry with per-entity pages — both, but GACS publishes the underlying signals (browse the registry)
Data sources and freshness
ScamAdviser's score is composite and largely static per crawl. GACS blends live sources — URLhaus, FCA unauthorised-firm alerts, chain-analysis feeds, and internal analyst triage — with a public methodology page. Every blacklisted entity carries the source that put it there, not just a black-box number.
“228 verified entities, refreshed every 14 days, every source cited.”
False positives: the part nobody talks about
Any reputation engine will occasionally flag a legitimate small business. The difference is what happens next. ScamAdviser's appeal path is opaque and slow. GACS runs a public appeals workflow: file at /appeal/<slug>, an analyst reviews, and a cleared entity is downgraded to false_alarm — the page stays live with the correction so the record is transparent instead of silently disappearing.
Price and access
- ScamAdviser — free trust score, paid tier for API access and advanced reports.
- GACS — free Safe Scanner (unlimited on a free account), free public registry, free appeals. Deep Risk & Recon reports and premium tiers layer on top for people who want continuous monitoring, watchlists, and family protection.
There is no paywall on the scanner itself. Activation of a free account unlocks memory: scan history, saved watchlist, and email alerts when a saved entity's status changes.
When ScamAdviser is the right call
- You want a one-glance trust score on a URL and nothing else.
- You're checking an e-commerce shop's reputation before a small purchase.
- The threat is a fake retail site, not a crypto or investment scam.
When GACS is the right call
- The threat involves a wallet address, phone number, or social handle — not just a URL.
- You need to see *why* something was flagged, with sources cited.
- You've already sent money and need the Panic Guide triage.
- You want to save the scan and be alerted if the status changes (activate a free Shield to unlock).
- You're protecting family and want the Loved Ones Safety Shield rather than a solo check.
Bottom line
ScamAdviser is a solid URL trust score. GACS is a full scam-intelligence platform: URL + wallet + phone + social, with a public methodology, an appeals workflow, and a memory layer that turns a one-shot check into ongoing protection. For a quick URL glance, either works. For the 2026 threat surface — wallet drains, AI-voice fraud, romance-recovery loops — GACS is the tool built for the job.
Run the same URL through both in the live side-by-side and see the difference for yourself.