You agreed it in WhatsApp. They’re saying you didn’t. ThreadLog extracts the proof — scope, prices, extras — timestamped, before the invoice goes out. 15 seconds. Free to start.
5 free records/month. No credit card. No app to install.
What was agreed
Client requested extension of tiling to full wall height (not half-height as quoted). Additional cost of £340 for extra tiles and labour agreed by client via WhatsApp before work continued.
Key details
Extra agreed
£340 inc. tiles + labour
Client confirmed
Paul · 14 Jun, 11:42am
Original quote
Half-wall tiling only
Change requested by
Client (Paul)
Your proof, if it ever comes to that · ThreadLog
↑ Extracted from a real WhatsApp thread. Took 15 seconds.
Used by UK tradespeople including
You agreed the extra work in WhatsApp. They said yes. You saw it. But by invoice time it’s “that wasn’t agreed” or “I thought that was in the quote.” And you’re left scrolling back through 300 messages, hoping you can find it — while they’re already talking to their solicitor.
UK construction has the highest rate of unpaid invoices of any sector. The average sole trader is chasing £22,000 in disputed work at any one time. Most of those disputes start in a WhatsApp chat.
ThreadLog doesn’t change how you work. It means every WhatsApp agreement becomes a dated, signed-off record — automatically, before the dispute starts.
No new app. No account setup. Works with the WhatsApp you already use.
In WhatsApp, open the chat → tap ⋮ → More → Export Chat → Without Media. Or paste the messages directly. Takes 30 seconds.
Our AI pulls out what matters: scope agreed, prices confirmed, materials ordered, who said what and when. Nothing invented — only extracted.
Download as PDF, send the link to your client before you invoice, or keep it on file. If a dispute goes further — this is your evidence.
Scope creep. Verbal agreements. “That’s not what I said.” Your WhatsApp is the evidence — ThreadLog makes it usable.
"That extra work was in the original quote."
Scope changes, day-rate agreements, variation orders — all pulled from your WhatsApp and timestamped before you send the invoice.
"Extra groundworks — £850 agreed by client (John, 14 Jun 08:24). Not included in original quote."
"I said fix the leak — not replace the boiler."
The moment your customer agreed to the full scope is in the chat. ThreadLog finds it and dates it.
"Full boiler replacement agreed — £2,400 parts and labour. Customer confirmed 09:14."
"Those materials weren't on the spec."
Materials ordered via WhatsApp, day rates discussed in the group — now extracted, organised, and saved.
"Consumer unit upgrade + 6 sockets — £1,150 inc. materials. Agreed before work started."
"You measured it wrong — that's on you."
Measurements, finishes, change requests from the client — captured from your chat the moment they were agreed.
"Bay window width 2.4m — client confirmed measurements on site. Timber ordered same day."
🏛️ UK court precedent (2025): In Jaevee Homes Ltd v Fincham, the Technology & Construction Court found that an exchange of WhatsApp messages “evidenced and constituted a concluded contract.” Your chat is already evidence. ThreadLog makes it readable.
No annual contract. Cancel any time. One disputed invoice pays for a year of Pro.
£0/month
Try it on your next job — no card needed
£5/month
For tradespeople who run on WhatsApp daily
ThreadLog extracts exactly what was said in your WhatsApp, with timestamps preserved. It's a structured version of your actual messages — the same messages you could show a client directly. Most disputes are resolved the moment you send a clear, dated record. For small claims court, your original WhatsApp export is your primary evidence; ThreadLog makes it readable.
No. You use the export feature built into the regular WhatsApp app on any phone. No API key, no setup, no approval process. Open a chat, tap export, paste it here.
That's exactly what ThreadLog is built for. Paste the entire thread and it finds the scope agreements, price confirmations, and scope changes automatically — however long the chat.
Your chat content is processed once to create the record, then deleted from our servers within 24 hours. We're UK-based and built to UK GDPR standards. We never use your conversations to train AI models.
5 records per month, no credit card needed. Free records include the ThreadLog watermark on PDFs and shared links. Pro removes the watermark and gives you unlimited records for £5/month.
Yes. ThreadLog handles group chats of any size and identifies who said what. Useful when you need to show it was the client — not you — who agreed to extra work.
Free to start. No account, no setup, no credit card. Open a job chat right now — you’ve got proof in 15 seconds.
Protect your next job — free5 free records per month. No card needed.