Cellidoscope Coming soon to the App StoreComing soon

Biologyyou cantouch.

Cellidoscope turns 57 biology topics into living labs. Tap, drag and experiment your way from your first cell to CRISPR, then lock it in with a short lesson and a quiz.

See inside the app For iPhone and iPad. Free to start.
This cell is live. Tap an organelle.
40×100 µm

Tissue

Organs are built from tissues, and tissues from cells. Zoom in on one.

Tissue 40×

Organs are built from tissues, and tissues from cells. Zoom in on one.

The cell 400×

Nucleus, mitochondria, Golgi, ER: tap any organelle in the app and see what it does.

The nucleus 2,000×

The control centre. Inside it, DNA waits to be copied, read and shared out.

A chromosome 20,000×

Watch chromosomes condense, line up and separate in mitosis and meiosis.

DNA 2,000,000×

Pair the bases, copy the helix, read it into protein and edit it with CRISPR.

Every lab is something you do, not something you read.

Each topic opens on an experiment. Real controls, real quantities, and the biology answers back.

Cellidoscope screen: your day at a glance
Your day at a glanceA daily goal, a streak and what to learn next, picked for your level and interests.
Cellidoscope screen: tap every organelle
Tap every organelleEvery part of the cell is drawn and explained the moment you touch it.
Cellidoscope screen: scrub through mitosis
Scrub through mitosisDrag the timeline and watch chromosomes condense, line up and split.
Cellidoscope screen: follow a blood cell
Follow a blood cellThe heart beats, valves snap shut and one red cell travels both circuits.
Cellidoscope screen: cross the pea plants
Cross the pea plantsSet each parent's genes, fill the Punnett square, then grow 100 offspring.
Cellidoscope screen: fire a neuron
Fire a neuronPush the membrane past threshold and watch the action potential on the trace.
Cellidoscope screen: then read and revise
Then read and reviseShort lessons, flip-card key terms and a quiz with an explanation for every answer.

57 labs like these, in ten units. Every one works offline.

Every topic, three ways.

The same order every time, so studying becomes a habit rather than a decision.

  1. Explore

    Start in the lab. Slide, tap and drag until you can predict what will happen next.

  2. Learn

    A short lesson in plain language, flip-card key terms and one surprising fact.

  3. Quiz

    Six questions, each with an explanation. Pass and the topic is yours; earn XP and keep your streak.

Ten units, from your first cell to CRISPR.

Every topic is marked Foundations, Core or Advanced, and Cellidoscope suggests where to start.

Chemistry of Life6 topics, 3 free
  • What Is Life?
  • Levels of Organization
  • Water, the Life Molecule
  • Acids, Bases and pH
  • Macromolecules
  • Enzymes
Cells8 topics, 4 free
  • How Small Is a Cell?
  • Prokaryotes and Eukaryotes
  • The Animal Cell
  • The Plant Cell
  • The Cell Membrane
  • Diffusion and Osmosis
  • Active Transport
  • Cell Signaling
Energy and Metabolism5 topics, 1 free
  • Photosynthesis
  • ATP, the Energy Currency
  • Cellular Respiration
  • Fermentation
  • Light Reactions and Calvin Cycle
Cell Division4 topics, 1 free
  • The Cell Cycle
  • Mitosis
  • Meiosis
  • Cancer and the Cell Cycle
Genetics and DNA9 topics, 2 free
  • DNA Structure
  • Mendel and Punnett Squares
  • DNA Replication
  • Transcription and Translation
  • Mutations
  • Dihybrid Crosses
  • Beyond Mendel
  • Pedigrees
  • Gene Regulation
Evolution5 topics, 1 free
  • Natural Selection
  • Genetic Drift
  • Phylogenetic Trees
  • Hardy–Weinberg Equilibrium
  • Speciation
Ecology6 topics, 3 free
  • Food Chains and Webs
  • Energy Pyramids
  • Biomes
  • Population Growth
  • The Carbon Cycle
  • Predator–Prey Cycles
The Human Body7 topics, 3 free
  • The Heart and Circulation
  • Breathing and Gas Exchange
  • The Digestive System
  • The Immune System
  • Homeostasis
  • Neurons and Action Potentials
  • Muscle Contraction
Diversity of Life4 topics, 2 free
  • Classifying Life
  • Plant Structure and Transport
  • Viruses and Bacteria
  • Flowers and Plant Reproduction
Biotechnology3 topics
  • PCR
  • Gel Electrophoresis
  • CRISPR Gene Editing
Foundations, middle schoolCore, high schoolAdvanced, AP, IB and college

Start free. Unlock everything when you're ready.

No account, no ads and no tracking, whichever you choose.

Free

$0

All 20 Foundations topics, forever: their labs, lessons and quizzes, plus streaks, XP and badges.

Cellidoscope Pro

Every topic in every unit, including new ones as they arrive. Family Sharing included.

  • YearlyStarts with a one-week free trial
    $29.99 a year
  • MonthlyFor one exam season
    $4.99 a month
  • LifetimePay once
    $59.99

Prices are in US dollars; the App Store shows the price for your country before you buy. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel them in your Apple Account settings. Any unused part of a free trial ends when you buy a subscription. See the terms of use and our privacy policy.

Cellidoscope is coming soon to the App Store.

For iPhone and iPad. Free to download, with every Foundations topic free.

Questions? Visit support