NewRequest early access to Hollen

Your course materials, finally making sense

Add your PDFs, slides, photos of notes or lecture recordings. Create a saved summary, ask Tutor about a topic that has you stuck, practise with quizzes and flashcards, then revisit what you missed.

Request early access

Sign up through our early-access form.

How it works

A study routine built around your courses

Keep each course in one place, ask about confusing topics, and use practice to find what needs another look.

Step 1

Add your course materials

Upload documents, photos, text notes or an audio lecture, or record one in the app. Once your material is ready, create a saved summary or use it with Tutor, quizzes and flashcards.

Step 2

Ask Tutor

Ask about a difficult topic, then follow up on anything that is still unclear. When an answer includes a source reference, open it to check your material.

Step 3

Practise as you go

Review flashcards and quizzes in short sessions that fit between classes.

Step 4

Review what you missed

Find missed quiz questions and flashcards marked Again in Focus areas. Check the answer, open the material, or ask Tutor to explain it.

Features

Understand a topic, then put it into practice

Move from a confusing topic to questions you can practise, with reminders for the days you choose.

Tutor sources

Check the material behind an explanation

Source references help you compare a Tutor explanation with your course material. Tutor can also use general knowledge when your materials do not cover a question.

  • Open referenced PDF pages or cited audio timestamps
  • Ask follow-up questions until it makes sense
  • Revisit earlier Tutor conversations
Saved summaries

Bring the main ideas into one clear view

Generate a saved summary for a processed material, then return to it whenever you need a quick review.

  • Review an overview, key ideas and important terms
  • Open source references to check the original material
  • Continue with Tutor when you want more explanation
Practice sessions

Turn your materials into practice

Generate quizzes and flashcards from your course materials, then see what you know and where to focus next.

  • Choose a short session or a timed mock exam
  • Mock-exam answers save as you go
  • Review past attempts and explanations
Lecture recordings

Turn a recording into something you can revise

Upload audio or record a lecture in the app. Read the transcript, ask about a confusing point, and practise from what was said.

  • Tap transcript timestamps to replay a passage
  • Use the transcript with Tutor, quizzes and flashcards
  • Audio up to 25 MB and two hours long
Study habits

A study habit that fits your week

See your recorded study days on a monthly calendar, track your current streak and personal best, and work towards your next milestone.

  • Complete a quiz, review flashcards or study with Tutor to record a study day
  • Browse past months to see when you studied
  • Choose your study days and reminder time
  • Enable an evening follow-up for days you haven’t studied
Pricing

Start free, with more practice when you need it

Compare the study allowances in each plan. Paid plans are priced in naira per month.

Free

₦0/ month

Try Tutor, upload your first materials, and make a few quizzes and flashcard decks.

  • 20 Tutor messages
  • 5 material uploads
  • 2 quizzes and 2 flashcard decks
Request early access

Plus

₦3,999/ month

Add more course materials and practise with extra quizzes, flashcard decks and timed mock exams.

  • 200 Tutor messages
  • 25 material uploads
  • 10 saved material summaries
  • 20 quizzes and 20 flashcard decks
  • 5 mock exams
Request early access

Pro

₦4,999/ month

Get higher allowances for Tutor, uploads and practice when you have more courses to work through.

  • 500 Tutor messages
  • 75 material uploads
  • 50 saved material summaries
  • 75 quizzes and 75 flashcard decks
  • 20 mock exams
Request early access

Free allowances reset on the first of each month (UTC). Paid allowances reset when your monthly plan renews. Paid plans renew until cancelled. Cancel anytime in the app. See our cancellation and refund terms.

FAQ

Questions students ask

Can't find what you're looking for? Email us and we'll get back to you.

Which materials can I study with?

Use PDFs, DOCX documents, PPTX slides, photos, TXT or Markdown notes, and pasted text. TXT and Markdown files must use UTF-8 encoding. Older DOC/PPT files and video are not supported by the study tools yet.

Can I study from a lecture recording?

Yes. Upload an M4A, MP3, WAV, AAC, OGG or FLAC file, or record a lecture in the app. Hollen creates a transcript for Tutor, quizzes and flashcards. Tap a transcript timestamp to replay that passage. Audio must be 25 MB or smaller and no longer than two hours; very long transcripts may exceed the study text limit.

Where do Tutor’s answers come from?

Tutor uses your processed course materials and can also draw on general knowledge. Answers may include references that open a PDF page or jump to an audio timestamp. Check important answers against your materials.

How can I get Hollen?

Hollen is being built for iPhone and Android, with English and French support. Use Request early access to register your interest through our form.

Is there a free plan?

Yes. Free includes 20 Tutor messages, 5 material uploads, 2 quizzes and 2 flashcard decks. Saved material summaries are available on Plus and Pro. Free allowances reset on the first of each month (UTC). Paid allowances reset when your monthly plan renews.

How do paid plans work?

Choose Plus or Pro in the app and pay through checkout. Prices are in naira, and plans renew monthly until cancelled. Cancel from Plans and billing; your paid access continues until the end of the current billing period. See the cancellation and refund terms for details.

Bring a course you want to understand better

Fill out the early-access form to register your interest in studying with Hollen on iPhone or Android.

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