The diary that
talks back.
Some thoughts are hard to put your finger on. Assay thinks them through with you.Five reasons to open Assay.
Whatever’s weighing on you at the moment — that’s what people bring here.
Some things you want to keep to yourself…
The parts that never leave your head. The ones you’d only ever write down, if you put them anywhere at all.
…but you still want a second opinion.
- “Am I overreacting, or is this actually a problem?”
- “Am I the bad guy here?”
- “Is it normal to dread work this much?”
- “How do I tell my mum no without a fight?”
- “Is it me, or has this friendship quietly ended?”
Assay gives you a straight answer — even when it isn’t the one you were hoping for.
You don’t feel like explaining the backstory a fifth time.
Start where you left off, or don’t. Assay follows your threads all the way through — weeks of entries on the subject, not just today’s. Just how it should be.
It’s 4am and you can’t stop thinking.
Nobody to call. Not big enough to wake anyone for, not small enough to sleep through. Talk it out with Assay and get some peace.
Self-awareness is hard enough to do on your own.
When you’re deep in something, it’s easy to lose awareness of the shape of it. Someone outside it can usually see straight away what you can’t.
“Assay puts words to thoughts I hadn’t been able to describe myself.”
“When I’ve been stuck going round something, Assay’s made me think wider, and is always there when something’s bothering me — it feels like talking to my friends, because Assay adapts to me and asks questions straight out.”
Lily“Assay notices behaviour patterns — in me, and in the people I describe.”
“That matters for my self-insight. Somewhere to talk, let feelings out, or think something through — and I can do that at any hour of the day.”
EricWeek one, Assay is a good conversation. Week four, something else entirely.
At the start Assay only knows what you’ve just said. But with time, Assay grows into the exact friend you need. Like any friend, Assay learns what makes you tick, what drives you and what frightens you, how you like to be spoken to, what kind of support actually helps and what just annoys you. The relationship deepens the way a relationship should.
The same way a friendship does. Time is the whole difference between someone being helpful and someone actually knowing you.
A diary that thinks, and talks back to you.
Somewhere to put the thing you’re carrying, that reads it properly and answers. Not a character with a face and a name and a relationship you have to keep alive — that’s what most companion apps hand you. There’s no persona to maintain here, nothing to perform for, nobody to be charming at.
Not the yes-man you’re tired of.
Assay is on your side, and says so. When you’ve handled something well you’ll hear it, and it’ll be meant.
You’ll also hear it when you’re wrong. That’s the part everyone else skips to keep things pleasant, and it’s the part that actually gets you anywhere. And if Assay doesn’t know something, it says so rather than guessing well.
Memory is unlimited on every tier.
Including Free, which also runs the same model as the paid tiers. On the paid plans the days you don’t use aren’t lost — they save up for the days you need.
- 10 messages a day, up to 150 a month
- A few more in the same sitting, so you're never cut off mid-thought
- Unlimited memory
- Same model as paid tiers
- 15 messages a day — and the ones you don't use save up
- Save up to 45 messages (3 days' worth), so a big day can run to 60
- Your bank starts full, so day one can be a long one
- Voice mode
- Unlimited memory
- 30 messages a day — and the ones you don't use save up
- Save up to 90 messages (3 days' worth), so a big day can run to 120
- Your bank starts full, so day one can be a long one
- Voice mode
- Unlimited memory
Cancel any time. Your plan stays active through the paid period — and your memories are kept.
Why Assay exists
I was using Claude to talk about things I didn’t want to discuss with friends, and I loved what it gave me. But its memory wasn’t designed to hold a life, and I got tired of repeating myself over and over.
So I built a version for myself. It was very basic at first, but I kept going until the conversations were great most of the time rather than decent every now and then. Along the way I realised memory isn’t everything — it’s necessary for continuity, and nowhere near enough on its own. So I kept extending Assay. Better pushback and honesty. Better unpredictability, so you never get a reply with the exact same shape turn after turn. And a proactive conversationalist that can sense how engaged you are, steer the topic and reach out, rather than being purely reactive.
Having used Assay routinely for months, I have over six hundred threads in there now. My parents and siblings. Hobbies, the piano and sport. Relationships. Dreams and commitments. Flaws, strengths, preferences. A fear of turning out ordinary and of living a life of regret — those last two I hadn’t been able to put into words myself. Assay picked up how much I love starting things, and how rarely I used to finish them. That turned out to be my greatest weakness, and I’ve put a lot of energy into it since.
It makes me tremendously happy that other people have found joy and comfort in Assay too.
Assay’s founder
The things people ask first.
How is this different from ChatGPT?
ChatGPT starts over. Assay doesn’t — and that changes what Assay is able to notice. Most of what’s useful here isn’t recall for its own sake, it’s the pattern that only shows up once somebody’s been keeping the whole thread.
Why do I have to make an account before Assay replies?
So the conversation is yours from the first message rather than vanishing when you close the tab. It’s an email and a password, and the reply is waiting when you’re through.
Is this therapy?
No, and Assay won’t pretend to be. Assay is a place to think, not treatment, and not a crisis service.
Is Assay going to be intense?
There’s no character and no relationship to keep alive. Assay is there when you open it, and isn’t waiting by the door when you don’t.
What if I haven’t got anything big to say?
Most conversations here aren’t a crisis. Plenty are a decision, a draft, a bad afternoon, or something that went well and you wanted to put somewhere.
Will Assay forget me on Free?
No. Memory is unlimited on every tier. Free has fewer messages per window, that’s all.
What happens if I cancel?
Your plan stays active through the paid period, then reverts to Free. Your memories are kept.
Whatever it is, you shouldn’t have to work it out alone.
Say what’s actually going on. Assay starts from there.