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Screenshots

  • Critterbook screenshot 1
  • Critterbook screenshot 2
  • Critterbook screenshot 3
  • Critterbook screenshot 4

About Critterbook

Critterbook is a painted field guide to the creatures your family actually meets: the isopods in the terrarium, the orb weaver by the porch light, the frog at the pond. Every one of its 36 creatures is a hand-finished painted plate on warm paper. Snakes, poison frogs, isopods, and the backyard visitors kids find on their own. Tap a plate for its vitals, its story, and the kind of fact a child repeats at dinner. POINT THE BUG LENS Found something? Look at it through the Bug Lens. Identification happens entirely on your phone; the photo never leaves the device. When Critterbook recognizes a creature from its guide, it suggests a match honestly ("Looks like a ladybug!") and never gives a confident wrong answer. FILL YOUR JOURNAL Every creature you find gets pressed into your Journal, a collection wall that starts as 36 ghosts and fills with color as your family finds them. Two ways to collect: scan one with the Bug Lens, or mark it seen in person. NOMINATE NEW CREATURES Found something the guide doesn't know? Nominate it. New plates are painted and added to the guide over time. MADE FOR FAMILIES - Free. No ads, no accounts, no purchases. - Private by design: everything happens on your device. - Works offline, in the yard, at the park, off the grid. Critterbook is painted, not photographed. A field journal your family fills together.

What’s new

Version 1.5.2 · Updated September 18, 2026

Behind-the-scenes improvements.

App privacy

The developer, Altai Ventures LLC, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction
  • User Content: Other User Content
  • Identifiers: User ID

Used for: Analytics, App Functionality

Alternatives to Critterbook

Looking for apps like Critterbook? Here are 6 similar apps on the App Store. The highest rated is First Words for Toddlers: Tofu (5.0/5), and all 6 are free to download.

Critterbook vs. alternatives
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Critterbook – Free September 18, 2026
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Whatty! My AI Buddy for Kids 1.7 / 5 (3) Free Aug 12, 2024 Compare
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First Words for Toddlers: Tofu 5.0 / 5 (2) Free Aug 29, 2026 Compare
iAnimal: Animal Identifier AI 3.8 / 5 (185) Free Jun 15, 2026 Compare
alphaXiv 4.7 / 5 (17) Free Oct 16, 2026 Compare

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