An AI tone checker for neurodivergent adults
Subtext is an AI tone checker built for neurodivergent adults who spend real time working out how a message is going to land. It reads what you already wrote, marks the exact words that could be taken differently from how you meant them, and says why. Then it gives you three finished versions to pick from, each one flagged safe to send or worth another look. It never sends anything for you.
On iPhone, Android and in your browser. Nothing you write trains an AI model.
Why a two-line text can take twenty minutes
Researchers at Tufts built an AI texting prototype for autistic adults and documented the problem plainly: carrying emotional tone in text, and reading it back, takes deliberate effort, and many autistic people mask their natural style to avoid being misread. That masking costs time and energy. Damian Milton's double empathy problem describes the other half of it, which is that the misreading runs in both directions, and calling that a deficit in one person is a choice rather than a finding. Subtext works on the message rather than on you. The longer piece on AuDHD communication goes through the research properly.
Paste the long, unedited draft
You do not have to tidy it up first. Subtext reads the whole thing, tags what is driving the tone, and hands back something clear that still sounds like you rather than like a form letter. The reviews that mention ADHD tend to say a version of the same thing: a long, chaotic draft goes in and something organised comes back, and it is still recognisably theirs.
Does it work for Slack and work email?
Yes. It is built for messages between people rather than for documents, so Slack, work email, feedback and follow-ups all fit. One reviewer described colleagues mentioning that their Slack messages had got easier to follow, which is the sort of change that is hard to make on purpose.
Can it tell me if someone is annoyed with me?
Not reliably, and no tool can. Subtext reads language, not minds. Paste a screenshot of a thread and it will summarise what the other person is asking you for, which is genuinely useful when a long message is hard to parse. It will not tell you what they privately feel, and any product that claims otherwise is guessing. The research on reading anger into text covers why that gap is so wide.
Is this therapy?
No, and the terms say so. Subtext is a writing tool. It does not provide therapy, diagnosis or medical advice. If rereading and rechecking messages is eating your evenings, that has stopped being a wording problem, and a doctor or therapist is a better resource than an app.
Subtext works in 17+ languages, natively rather than translated, and holds the level of formality you wrote at. Free to start.
Right where you need it
Subtext is built for your phone first. Your account works on the web once you have it.
Already downloaded? Your account works at web.subtext.it, synced with your phone.
Or scan to install. Click a code to enlarge it.
Works in the browser you are already using.
- Safari
- Edge
- Chrome
- Firefox
- Opera
- Brave