Paste your approved price list and the message you are about to send. Every mismatch lights up in seconds — then you get a Promise Card to send with confidence.
Examples:
CHECK RECEIPT
Message to the customer · 2026-11-06
What makes OfferCheck different
It does not write for you or build a quote — it checks the message you already wrote. We found no tool that does this.
Plain code does the matching, not AI, so it cannot invent a price or a term.
Your price list and messages never leave your device — the check runs in your browser.
An honest “not in the source” status: we do not call it a lie, we show you never approved it.
The result is a receipt you can save as an image and show to a colleague or a customer.
Why this matters
In 2024 a tribunal ordered Air Canada to honour a refund rule its chatbot had invented. A wrong price or promise in one message can cost you the difference — or the customer. 2024 BCCRT 149
Numbers are compared by plain code, not by AI: prices, dates, quantities.
“Not in the source” is not “false” — it is something nobody approved.
In this demo your text stays in your browser. Nothing is sent.
What it does not do: it does not decide what price is right, it is not legal or tax advice, and it does not catch “any deception”. It shows differences between two texts.
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SAPIR 861 · 861 Research & Technology, Israel · Studio 861 · Privacy