Zynlo
See how it works

Spaced repetition

Flashcards that actually stick.

Create or import your cards. Zynlo learns what you know, what you forget, and what should come back next.

See how it works Open on web

Smarter flashcards · Spaced repetition · Active recall

Turkish · Everyday conversation

How do you say “I’ll call you later”?

Seni sonra arayacağım.

How it works

The test changes as you learn.

A card does not stay the same question forever. As knowledge settles, Zynlo asks for more, and when you miss, it does something about it.

  1. 01

    “I’ll call you later”

    Reveal

    Flashcard

    Read it, reveal it, say whether you knew it. Never typed the first time.

  2. 02

    “I’ll call you later”

    Seni sonra

    Production

    Three scheduled recalls in a row, and it asks you to produce the answer.

  3. 03

    Seni sonra arıyorum

    Seni sonra arayacağım

    Repair

    Miss it, and where the card carries a mistake matching yours, it shows the correction.

  4. 04

    Say it in the future tense

    …

    Retest

    Then the same idea, asked a different way, so you show you understood it.

  5. 05

    arayacağım

    Due in 9d

    Return

    Back into the schedule, at the point where seeing it again is worth most.

For anything

One system. Whatever you’re learning.

Zynlo does not care what the cards are about. It cares whether you can still retrieve them in a month, under pressure, without the answer in front of you.

  • Bar exam · Contracts

    What are the elements of promissory estoppel?

    A clear promise, reasonable reliance, actual reliance, and injustice without enforcement.

  • Police exam · Penal law

    Causing serious physical injury with a deadly weapon is assault in which degree?

    The first degree.

  • Cardiology · Pharmacology

    First-line therapy in heart failure with reduced ejection fraction?

    An ACE inhibitor plus a beta blocker.

  • Japanese · Kanji

    病院

    byōin — hospital.

  • Flight training · Limitations

    What does VNO mean?

    Maximum structural cruising speed. Above it, fly only in smooth air.

  • New job · Who owns what

    Which team do I take a broken deploy to?

    Platform. Anything in the pipeline is theirs first.

  • Chess · Sicilian Defence

    1.e4 c5 2.Nf3 d6 3.d4 — the main continuation?

    3…cxd4 4.Nxd4 Nf6 5.Nc3. The Open Sicilian.

  • Burgundy · Whatever you like

    Which grape makes red Burgundy?

    Pinot Noir. Always Pinot Noir.

Scroll, or drag the deck.

Mistakes

More than right or wrong.

Most apps record a miss and move on. Zynlo keeps what you actually wrote, how it differs, and whether it is a mistake you keep making.

A miss becomes the reason the next few minutes look different.

You wrote

Je t’appelle plus tard.

Expected

Je t’appellerai plus tard.

Present tenseFuture tense

The workspace

A real flashcard manager.

Search, filter, sort, file and edit every card you own — without the settings maze.

  • Search every card, accent and diacritic tolerant
  • Filter by state, schedule, topic and evidence
  • Seven sorts, list or grid, and saved views
  • Archive and Trash, both reversible, neither destructive

Three ways to study

  • Review due

    Scheduled knowledge ready now.

  • Learn new

    Introduce unseen cards properly.

  • Cram

    Practise anything without changing the schedule.

Scheduling

The right card. At the right time.

Strong knowledge gets out of the way. Fragile knowledge comes back sooner.

Zynlo schedules with FSRS, the modern spaced-repetition model, and adapts the gap to how each card actually goes.

  1. Today
  2. 3 days
  3. 11 days
  4. 31 days

Recurring mistakes

See what keeps tripping you up.

Type an answer that turns out to be wrong and Zynlo keeps the pair. The ones you repeat rise to the top.

These are mistakes you actually made — kept apart from the ones a card was imported carrying.

  • geliyorumgeleceğim
  • sincefor
  • mitosismeiosis
  • j’appellej’appellerai

Progress

See what is actually sticking.

Every subject is drawn as a constellation. Each star is one piece of knowledge, and how brightly it burns is where that knowledge really stands.

  • Established recalled three times running
  • Emerging seen, still settling
  • Strained slipping lately
  • Dormant not met yet

Production accuracy Your first typed answer on a card. A retry straight after seeing the answer is not counted, because it is not recall.

Repair recovery How often a correction actually landed — kept separate, so it never flatters the number above.

Where Zynlo has not measured something yet, it says so instead of showing a zero.

Building a deck

Write them, or bring them.

Zynlo does not run a model. It writes the brief, you use whichever AI you already trust, and Zynlo takes the result back.

  1. YouPick a subject and answer a few questions.
  2. Zynlo briefA precise instruction, down to the columns.
  3. Your AIIn their app, not here.
  4. ImportMarkdown, CSV, tab separated or JSON.
  5. Cards readyMarked unverified, with anything missing named.

External AI understands the subject. Zynlo manages the learning.

FAQ

Questions

What is Zynlo?

A flashcard app built around retention. You create or import cards, and Zynlo decides what to show you and when, using spaced repetition.

Is Zynlo a flashcard app?

Yes. That is the whole product. The difference is what happens after a card exists: how it is asked, what happens when you miss, and when it comes back.

How does spaced repetition work?

Each review tells Zynlo something about how well you know a card. It schedules the next one for around the point where you would otherwise start to forget, so well-known material appears rarely and fragile material returns sooner.

Can I create my own cards?

Yes. A card needs only a question and an answer; explanation, hints, acceptable answers, common mistakes and a check question are all optional.

Can I import cards?

Yes, from markdown tables, CSV, tab separated text and JSON. Commas and quotes inside fields are handled, and so are accented characters. Importing from other flashcard apps is not supported yet.

Does Zynlo generate cards?

No. Zynlo writes a brief for an AI assistant you already use, and imports what you bring back. Nothing you type or import is sent to any AI service by Zynlo.

Can I use ChatGPT or Claude with Zynlo?

Yes, and that is the intended path. The brief is designed to be pasted into whichever assistant you trust.

Can I use it for languages?

Yes. Accented characters and non-Latin scripts are handled, so French, Turkish, Greek, Japanese and the rest behave properly, and an answer that is right but missing its accents is treated as a near miss rather than a failure.

Can I use it for medicine, law or exams?

Yes. Long questions and long answers are supported, and nothing assumes a card is a vocabulary pair. Please check anything that matters against an authoritative source: Zynlo does not verify imported material.

Does it work offline?

Yes. Your subjects, cards and review history are stored on your device, and studying does not need a connection.

Is there a desktop or web version?

Yes. Zynlo runs in your browser at app.zynlo.app. Your library is kept in that browser only, with no account and no sync, so export a backup from You now and then. Browsers can clear a site’s storage, and Safari may do so after seven days without a visit.

Will it be available for iPhone and Android?

That is the plan, but neither is submitted or available today. We would rather say so than take a pre-order for something that does not exist.

What does it cost?

Nothing at the moment. There is no payment of any kind in the app and no pricing has been decided.

Remember more
of what you learn.

Zynlo is in development. The web version is coming, and this page will link to it the day it is ready.

See how it works Open on web