Bad night? It's noted.
Log sleep and illness before each session. Your trend knows the difference between tired and different.
4 minutes a day. One long-term signal.
Your brain changes slowly.
Now you'll notice.
Five tests. Four minutes. One personal baseline that builds over weeks and months, so the question stops being "am I imagining this?" and starts being something you can see.
Free to start. No account required. Not a diagnostic tool.
Short enough to stick
Done before your coffee cools. That brevity is the point: consistency matters more than any single score.
Weeks, not moments
One session means nothing. Thirty start to mean something. Keel Pro keeps the full record.
~4 min
per session
5
cognitive tests
30 days
free history
Frequently asked questions
What people ask before starting daily cognitive tracking.
What is Keel?
Keel is a daily cognitive baseline tracker. You complete five short cognitive tests in about four minutes a day — processing speed, reaction time, working memory, arithmetic, and verbal fluency — and Keel turns the results into a personal trend line so you can tell a bad day apart from a real change.
How long does a Keel session take?
About four minutes. The five tests are deliberately short so the habit is sustainable: a daily check-in is more useful than a long, occasional one.
Is Keel a diagnostic tool for Alzheimer's or dementia?
No. Keel is a personal wellness tracker, not a medical device. It does not diagnose Alzheimer's, dementia, mild cognitive impairment, or any other condition. If you have concerns, talk to a qualified healthcare professional. Keel's value is the longitudinal data you can bring to that conversation.
Which cognitive domains does Keel measure?
Processing speed (Digit Symbol Substitution Test), simple reaction time, working memory (arithmetic verification and spatial working memory), and language plus executive function (semantic category fluency). These are the domains where age-related and pre-clinical changes typically surface first.
Do I need to create an account?
No. The free session at /session runs without an account so you can try Keel and see your baseline immediately. An account adds long-term storage, dashboard trends, and Keel Pro features.
How much does Keel cost?
The free tier includes the full five-test session and 30 days of history. Keel Pro is $20 per month or $99 per year and unlocks the full historical record, advanced trend analysis, protocol tracking, and family sharing. Gift purchases are available.
Who is Keel for?
Adults in their 40s, 50s, and 60s who want to track their own cognitive health, adult children setting up tracking for an aging parent, and quantified-self users tracking interventions like sleep, exercise, supplements, or diet against an objective cognitive measure.
How is Keel different from brain training apps like Lumosity?
Brain training apps are designed to improve scores on their own tasks. Keel is built to detect change. The tests are short, repeated, and analyzed longitudinally so a real shift in your baseline shows up as a trend rather than a single bad score.
How is Keel different from clinical tests like the MoCA or MMSE?
The MoCA, MMSE, and SAGE are one-time clinical screens administered by a clinician. Keel runs daily, in four minutes, on your own device, so you build a personal baseline over weeks and months. It complements clinical screening rather than replacing it — the data Keel produces is exactly the kind a clinician finds useful.
What is a cognitive baseline?
A cognitive baseline is your typical level of performance across cognitive tasks like processing speed, working memory, and verbal fluency. Once you have a personal baseline built from repeated testing, deviations from it become meaningful — something you can act on, rather than something you have to guess about.
Start your first check-in
Free. No account required.