Tactu listens, then writes a clinical note your doctor can act on — severity, locations, triggers, all in your own words. Pain, gut, skin, or seizures. Pocketable. Private.
Tactu is four tabs and a voice button. Everything else — the chart, the heatmap, the doctor report — computes itself from what you already said. The screens below are from the update now in review: multi-condition tracking, foods, the seizure diary, and the PDF doctor report.
GPT-4o clinical translation, with the McGill Pain lexicon for pain scoring. Correlates your symptoms with food, sleep, steps, weather, and medications — automatically. Designed to make you heard at every appointment.
Hold the button and describe what you feel in plain language — any language (English, German, Danish, Spanish, and more). Release when you're done. No voice? Log it by hand — no AI, works fully offline.
Speak in any language — GPT-4o understands it and writes the clinical note in English, with a chief complaint, character descriptors, and a grounded 0–10 severity score (NRS via the McGill lexicon for pain). Non-pain entries — seizures, skin, gut — are logged the right way. Reports are in English for now; more report languages are coming.
Everything the AI extracted is editable before save — pain score, body locations (10 regions), contributing factors (8 tags), the note itself. You're always in control.
Barometric pressure, humidity, temperature — attached to every entry silently, no taps, no location prompts when you set a home city. Pressure drops correlate with flares.
Tap once to start a flare — pain, gut, or skin. Tap again to end. Tactu records every flare's duration and computes how different your symptoms are during flares vs your baseline.
Record the meds you're on in Settings. Logged medications appear in the doctor report alongside symptom trends — the answer to "what have you tried".
With permission, Tactu reads your sleep, steps, and resting heart rate around each entry — surfacing context the AI and your doctor both find useful.
Line chart with 7-day, 30-day, 3-month, and 1-year ranges. Spot ramping-up trends before they become hospital visits.
A quarter of your year, on one screen. Color intensity maps to the day's peak severity — bad weeks jump out visually.
7-day trend delta. Worst weekday. Severe-day percentage. Top trigger correlation. Affective language shift. Flare vs baseline. Only surfaces when there's signal.
Pick a time. Tactu taps you once a day: "How are you feeling?" One log keeps the record honest. Opt-in, no push spam.
Log what you eat by voice or chips. Tactu surfaces which foods are associated with your worst days — an elimination-diet head start. A pattern to discuss, not a diagnosis.
Pain, gut, skin, seizures, and more — each logged the right way. A seizure is an event, not a 1–10 score. Filter and report on each condition on its own.
Log non-pain events like seizures with no score — the details land in a clinician-ready diary you can bring to your neurologist. Observational, never predictive.
Track skin flares as their own episodes, independent of pain flares. See how long a flare lasted and what coincided with it, in Flare History.
One tap assembles an AI narrative, symptom stats (avg / peak / severe %), a seizure summary (frequency, types, aura/injury), flare episodes with durations, top locations, top triggers, foods logged, medication list, Apple Health context averages, and your worst three episodes. Export a clean multi-page PDF or share as text — before any appointment.
Tactu is a documentation tool, not a medical device. It doesn't diagnose, treat, or replace a clinician. Always consult your healthcare provider.
No accounts. No API keys to paste. Download from the App Store, open it, and start speaking — Tactu handles the rest.
Open the app, hold the record button, describe what you feel — any language, no medical vocabulary required. Prefer typing? There's a field for that too.
AI extracts severity, body locations, contributing factors, foods, and writes a clinical note. Correct anything — including the entry type — with one tap before you save.
Before your appointment, generate the Doctor Report. Your doctor gets narrative, stats, triggers, and context — in the time it takes to read one page.
Most health apps ask you to paste an API key or trust an anonymous server. Tactu does neither — every request is cryptographically signed by your phone's Secure Enclave, and our AI credentials live server-side where you can't be social-engineered out of them.
Apple's DCAppAttestService generates a Secure Enclave keypair on first launch. Every OpenAI request is signed with that key plus a monotonic counter. If the binary is tampered with or the signature replayed, our server rejects it.
OpenAI credentials never ship in the iOS binary. They live in Vercel environment variables, scoped to our proxy. Rotation is a one-line change — no App Store review required.
Entries, flares, medications, Apple Health context — none of it leaves your device. Only your voice (for transcription) and typed text (for clinical translation) round-trip through our server, and neither is stored after the response.
No accounts. No analytics. No ads. Download from the App Store, open the app, and start speaking — the only personal detail we ever know is what you choose to type into a health entry, and it never leaves your phone.
Feedback · Support
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Free on the App Store. iPhone, iOS 26+.
No subscription. No accounts. No servers you have to trust.