One Set a day. Six thinking skills. Seven minutes.

Three steps. No friction.

1. 01

   Pick your Skills

   Choose 3 to 6 of the six Senwitt Skills: writing, math, code, memory, reading, and reasoning. You can re-pick any day — the Set adapts.

   

2. 02

   Complete your daily Set

   Senwitt mixes your chosen Skills into one short Set that takes about seven minutes. You do the reps. No streak shame, no leaderboard pressure.

   

3. 03

   Watch your Sharpness, streak, and Belt move

   Sharpness shifts a little with each Set. Streaks count consecutive days. Belts unlock as your sustained Sharpness crosses thresholds along the Senwitt Path.

   

Why seven minutes — not seventy

Seven minutes is a deliberate choice, not a marketing number. Habit-formation research consistently finds that the friction of starting is the biggest predictor of whether a daily behaviour survives — not the depth of any single session. BJ Fogg's Tiny Habits work at Stanford documents this directly: a behaviour that can be done before the resistance to starting builds is far more likely to repeat than one that requires scheduling, equipment, or focus blocks (tinyhabits.com). James Clear's "two-minute rule" arrives at the same place from a different angle: scale the activation cost down until showing up is automatic, then let depth grow on its own (jamesclear.com).

Seven minutes is also long enough for a Set to contain real reps — not a single trivial question dressed up as a streak. The number was tuned in early user testing as the longest a Set could be without competing with a podcast, a coffee queue, or a commute, and the shortest it could be while still mixing reps across three to six Skills. It is short on purpose. Senwitt's position is that what you do every day matters more than what you do intensely once a month — a position that Ericsson's deliberate practice literature has supported for thirty years.

What counts as a rep

A rep is one small piece of thinking — sized to be completed in under a minute, but not trivial. A Writing rep might be a short paragraph to tighten, a verb to choose, or a sentence to restructure. A Math rep might be an estimation problem, a unit-conversion sanity check, or a small multi-step calculation done without a calculator. A Code rep might be a snippet whose output you predict, a tiny bug to spot, or two refactors to choose between. A Memory rep might be a sequence to recall, an image to encode then describe, or a name-and-face pairing. Reading reps test sustained attention on real prose. Reasoning reps ask you to choose between options and explain the trade-off — the work AI assistants usually do for you.

Reps are not the same as the standardised cognitive tests Senwitt publishes separately under /tests/. Those tests — Stroop, N-back, digit span, reaction time — are diagnostic instruments with decades of normative data behind them. Reps are practice items. The difference matters because Senwitt does not claim the daily Set produces a score that means anything in those instruments' framework. See brain exercise vs brain training for why we are careful about this distinction.

Streak philosophy — no penalty for missing a day

Streak-based habit apps split sharply into two design schools. The first treats streaks as a loss: break the chain and lose all your progress, sometimes with notifications designed to produce guilt. The second treats streaks as a record of consistency: the count exists, but missing a day is a missed day, not a punishment. Duolingo, the most studied of the streak-driven apps, has publicly written about how aggressive streak guilt produced disengagement at scale — leading them to introduce streak freezes, streak repair, and other forgiving mechanics (Duolingo blog on the Streak Society).

Senwitt is built for the second school by default. The streak counts days where you completed a Set. If you miss a day, the streak resets, but your Sharpness rating does not collapse, your Belt does not drop, and your skill history remains intact. Showing up the next day is what we optimise for. Loss aversion is a real psychology effect — Kahneman and Tversky's prospect theory work shows people weigh losses about twice as heavily as equivalent gains — and Senwitt deliberately does not weaponise it.

Sharpness, Belts, and the Senwitt Path

Sharpness is Senwitt's internal progress rating — it combines effort and skill across your chosen Skills. It is not a cognitive score and not a medical metric. As Sharpness sustains over time, you unlock Belts on the Senwitt Path, a martial-arts-inspired progression from white to black. Belts are visible inside the app and on share cards. They reward consistency, not flashes of performance.

The Belt metaphor is borrowed deliberately: martial-arts progression is one of the few popular skill systems where the rank reflects time spent and consistency rather than a one-off test. Belts unlock by sustained Sharpness — meaning a long week of serious practice does not skip you ahead, and a quiet month does not bump you back.

More: Sharpness rating and Senwitt Path.

What Senwitt does not do

Senwitt does not claim to raise your IQ, prevent cognitive decline, treat any medical condition, or guarantee transfer of skill to your job, school, or hobbies. Those claims have a history. In 2016, the U.S. Federal Trade Commission fined Lumosity $2 million for marketing similar promises without sufficient evidence (FTC press release). A 2014 open letter signed by over seventy cognitive scientists, organised by Stanford's Max Planck Institute collaborators, made a parallel point: there is no consensus that commercial brain-training products improve general cognitive ability (consensus statement). Senwitt sits outside that category by design: we sell daily practice on six skills, not a promise about your brain. The longer version is on brain exercise vs brain training.

Free, with Super Senwitt for more

Senwitt is free to use. Super Senwitt is the optional subscription that removes ads and limits for people who want to go further. The free tier always includes the daily Set. Pricing is on the pricing page.