Set it.
Plan it.
Achieve it.

Student OS

Set it.
Plan it.
Achieve it.

The study app that knows
when you're ready

Wed, Dec 16 ✦ Plan ready
Calculus II — Study2:00–4:00
Physics 101 — Review4:30–6:00
History — Essay draftDue tomorrow
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Your week, planned

A week that
plans itself

Homework before it’s due. Revision before every test.

Study Mode

Open your homework.
Study Mode does the rest.

A timer, your next step, and a tutor at your side: it explains the topic, quizzes you, and tells you how ready you are for the test.

Homework help

Stuck on an exercise?
Chrono shows you where.

Snap your working: Chrono circles the line that went wrong and guides you to the fix, without giving it away.

Quiz me out loud

Chrono quizzes you out loud.
Like in class.

A real spoken conversation with a teacher who listens, presses and corrects you. When writing helps, the board opens.

Memory science

Spaced beats crammed.

Same hours, about twice as much remembered.

Without Zenow Cram32%
M
T
W
T
F
S
S
With Zenow Spaced64%
M
T
W
T
F
S
S

CHRONO

Knows everything.
Helps with everything.

Your calendar, homework, tests and grades. All in one mind.

Why it matters

Smarter studying,
measured

Each number links to the research behind it.

0%
of students feel academically overwhelmed
0h
saved per hour of planning
0x
better retention with spaced study
0s
to plan your whole week
For ambitious students

Aiming for a top university?

Selective admissions reward strong grades and a balanced profile. Zenow is built for both.

Your goals, your plan — Zenow isn't affiliated with any university.

How it works

From homework to ready, in three moves

No setup to sit through. Zenow does the planning; you do the part of studying that counts.

1

Add it in seconds

Type it, snap your diary, or sync your school registry.

2

Zenow plans the week

Every homework before it’s due, revision spread before each test.

3

Study, then check

Learn it, answer three questions, see how ready you are.

Pricing

Every plan studies with you. Paid plans do more of it.

Pay yearly: 2 months free
Free
$0
  • Today’s 3: questions from your own lessons, every day
  • Study Mode: learn, practise, check
  • Readiness for every test
  • Your week planned automatically
  • Homework hints and review · 300 AI credits a day your first week, then 100
  • 1 calendar and 1 school registry
  • To-do sync, exports, goals
  • Weekly email to a parent or tutor
Start free
Most popular
Plus
$9/mo
  • Everything in Free
  • 10× the AI: 1,000 credits a day · 5 images a month
  • 3 calendars, 2 school registries, to-do sync
  • Chrono history kept · cognitive load signals
  • Help that works each exercise out before it answers
  • Exam seasons, and past papers read into topics
Get Plus
Pro
$19/mo
  • Everything in Plus, with no connection limits
  • 2,000 credits, 15 images a month and a stronger tutor model
  • A weekly email to a parent or tutor
  • Goals, curriculum, forecasts and the term review
  • Exports and webhooks
Get Pro
Family

Pro for you, and for each person in your household you add, a little less than Pro, on one bill. Each account stays private: nobody sees anyone else's homework, grades or chats.

  • Up to 6 people, each with all of Pro · AI credits shared
  • Every account private by default
  • A parent overview, only if each student shares it
  • A Sunday email on the week, for the one who pays
$19/mo
+ $14 a month for each person you add
Get Family

Pay yearly and two months are free. Pro can be tried for 14 days without a card.

click the arrow to start

Walk into your next test ready.

Free to start, no card needed. Study Mode, readiness and a planned week from day one.

Start free →
Sources & methodology

Data & research

Every claim on this page links to the study behind it. Click a claim to jump down here, then use the link on each card to jump back up.

Spacing & self-testing

2×better retention with spaced study
  • 1
    Cepeda et al. (2008) · Psychological ScienceSpacing effects on retention — 1,350+ learners, gaps up to 1 year
  • 2
    Cepeda et al. (2006) · Psychological BulletinMeta-analysis: 839 assessments across 184 articles — distributed practice reliably wins
  • 3
    Rohrer & Taylor (2006) · Applied Cognitive Psychology≈2× better math performance at a 4-week test (64% vs 32%)
  • 4
    Dunlosky et al. (2013) · Psych. Science in the Public InterestSpaced practice & practice testing rated high utility
  • 5
    Roediger & Karpicke (2006) · Psychological ScienceAnswering questions on what you studied beats reading it again for remembering it a week later

64% vs 32% = Rohrer & Taylor's 4-week retention test (distributed vs massed practice).

↑ Back to the claim

Student overwhelm

70%of students feel academically overwhelmed
  • 1
    Barbayannis et al. (2022) · Frontiers in Psychology87% of U.S. college students cite education as their primary source of stress (APA, Stress in America)
  • 2
    Gallup (2023)66% of U.S. college students report experiencing stress
  • 3
    Haritay et al. (2025)74% of 1,426 students (ages 13–15, India) report high academic stress

Planning time & speed

4hsaved per hour of planning

The 4h figure is a U.S. government productivity guideline; 30s is a product measurement.

↑ Back to the claim

Top university admissions

Balance beats an overloaded résumé
  • 1
    Harvard Graduate School of Education (2016) · Turning the TideEndorsed by the admissions deans of every Ivy League college — less achievement pressure, quality over quantity of activities
  • 2
    MIT Admissions (2016) · Dean Stu SchmillMIT's Dean of Admissions: balance and ethical engagement matter more than an overloaded résumé
  • 3
    Rohrer & Taylor (2006) · Applied Cognitive PsychologyThe "≈2× retention, same hours" figure behind the aim section