Monthly updates that write themselves. And a heads-up when a client goes quiet.
Type one line and Klantr writes the client-ready update. When a client goes quiet, you get a heads-up — so you never lose a retainer without seeing it coming.
Type one line. The AI writes the update.
This is the AI writing, live. Change the line and see what comes out.
Klantr read this
Hi Mark, A quick update on June 2026 for Webshop Tuinplezier. Here's what we picked up for you this month: • Optimised the summer collection product photos You have 4.5 hrs of your 6 hrs left this month. Plenty of room, so do let me know if anything else is on your list. For next month, new 'Garden furniture' category page is on the planning. Kind regards, Sanne de Wit — Studio Maan
And then? We keep watching
If Mark goes quiet too long, you get a heads-up — €450 a month is at stake.
Type your own line above and click — this is the AI writing, live.
The AI writes. You decide what your client sees.
No automatic emails. Every monthly update is a draft you read, refine and send yourself — in your tone.
Klantr writes the draft
Type one line; you get a client-ready monthly update in your own tone.
You review and adjust
Nothing is fixed. Tweak a sentence, add or cut — until it's exactly right.
You hit send
Nothing goes to your client automatically. You stay in control, every time.
Your whole client book, watched for silence.
Every retainer client is a dot. The longer you've gone without reaching out, the further it drifts outward — and the more retainer revenue is quietly at stake.
Clients
12
Watched
€7,350
At stake
€2,850
Going quiet
4
At stake
€2,850
4 retainer clients have been quiet too long. Klantr sees it and nudges you — before they quietly walk.
Hover a node or a row for details.
Watchlist · longest silence first
For anyone with recurring monthly clients
Work on a retainer or a monthly fee, with client contact every month? Then this is for you — whatever your trade.
Web & marketing agencies
Monthly updates on what you did, without it costing you an evening.
Bookkeepers & accountants
You already have recurring clients and monthly contact — let the update write itself and see who goes quiet.
SEO & social media specialists
Show recurring clients the value every month, so they stick around.
Copywriters & consultants
One line about your work becomes a polished update in your tone.
Not a toy — a real workspace
The demo writes the update. Behind it, Klantr watches your whole retainer book — who's going quiet and how much revenue is at stake.
Monthly revenue
€2,650
At risk
€2,050
All your clients in one overview, with the amount at stake.
6 weeks quiet · €450
3 weeks quiet · €700
Reply with one line
Who went quiet? One email from us; you reply with a single line.
June
update sent
May
update sent
April
update sent
Every update kept — the whole client relationship in one place.
Three steps, all in your inbox
Set up your clients once
Add your retainer clients with their monthly amount. Klantr starts a silence-clock per client — nothing else to track.
Klantr watches who's gone quiet
If a client hasn't heard from you in too long, Klantr warns you in time — with the amount at stake. No noise, just who needs attention.
Reply with one line
Klantr shows you who's quiet. Reply with one line and Klantr writes and sends the monthly update in your tone — which resets that client's clock.
Privacy is not an afterthought
As little as possible
We keep only what's needed: when you last sent an update and the text you approve. No connection to your inbox.
EU hosting, GDPR-compliant
On EU infrastructure where possible; some processors — such as the AI text-generation — may sit outside the EU, under data-processing agreements.
You decide what gets sent
You read and edit every update before it goes out the door.
Export or wipe, anytime
Pull your data out or delete your account whenever you want.
What Klantr does for you
One line becomes an update
Type in one sentence what you did. Klantr turns it into the deliverables, an hours estimate and a client-ready update — in your own tone. Ten clients? Ten updates in the time one used to take.
Watches who goes quiet
Klantr tracks which client hasn't heard from you in too long — with the amount at stake — and flags it for you in your workspace. So you never lose a retainer without seeing it coming.
Flat rate, no per-seat pricing
One clear amount per month, no matter how many clients you manage. No sales call, no surprises.
One plan. No surprises.
All clients included.
- Unlimited clients
- AI monthly updates
- Quiet-client monitoring with a heads-up
- Export whenever you want
14 days free · no credit card · cancel monthly · no silent charge after the trial.
Why it works
One line becomes an update
Type what you did; you get a client-ready monthly update in your own tone — ten clients in the time one used to take.
Warns you in time
Klantr tracks how long each client has been quiet and pings you before a retainer slips away. Targeted, so you keep trusting the heads-ups.
You approve everything
Every update is a draft you read and edit. Nothing leaves under your name without your yes.
Built for freelancers working on retainer with recurring clients — by one independent maker, no team.
Questions you probably have
Do you read my inbox?
How does Klantr know when a client goes quiet?
Which AI do you use?
Can I edit the update before sending?
Where does my data live?
What does it cost?
Will I be charged automatically after the trial?
Can I export or delete my data?
Why not just use ChatGPT?
Does it work with just a few clients?
Does Klantr work outside the Netherlands, e.g. in Belgium?
One maker. One clear promise.
Maker · Klantr
I'm Cemal, the maker of Klantr — and I'm 14. No team and no investors: I saw a problem and built the fix myself.
What I kept noticing at the solo agencies around me: retainer clients quietly drift off before anyone catches it, and the monthly update never gets sent because it eats too much time. Klantr solves exactly those two things — it watches who goes quiet and writes the update in your own tone — and deliberately does nothing more.
I build it, maintain it, and answer every email myself. If something isn't working the way it should, you hear it straight from me — not from a ticketing system. And your data stands apart from me: everything runs on professional EU infrastructure, you can pull it out in one click as CSV or JSON, and if I ever stop, you get plenty of time to take it all with you.
— Cemal, maker of Klantr
Stop losing retainers you didn't see leaving.
Add your clients once. Klantr watches who goes quiet and writes the monthly updates — you just reply with a line. 14 days free, no credit card.