Coming soon · iOS & Android

id any bug.
stay offline.
be smug~

The free insect hunting game that runs entirely on your phone.
No cloud. No account. No $$$.

We only store your email address and the date of submission. Nothing else.

🎉 You're on the list. Go find a legendary.

One email when we launch. Obviously.

✓ no account ✓ no internet needed ✓ no $$$ ✓ no tracking ✓ MIT licensed
Critterboard home Critterboard onboarding Critterboard brains
0% Cloud Fully offline local AI models.
0% Tracking No data leaves your device.
0% Accounts Open the app and start exploring instantly.
0% Cost 100% free and MIT open-source.
100% Gamified Collect, explore, and view your world on an interactive 3D globe.

How it works

On-device intelligence, no cloud required.

Critterboard bundles lightweight, hardware-accelerated vision models directly into the app. Identification runs on your phone's neural engine — never on a remote server, never over a network.

Models are quantized and optimized for mobile inference, delivering identification accuracy comparable to server-side systems at a fraction of the compute cost. No API key. No rate limit. No latency.

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Quantized Vision Models 4-bit quantized models optimized for iOS Neural Engine and Android NNAPI. Runs in under 200 ms per frame on mid-range hardware.
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Hardware Acceleration Delegates inference to the on-device NPU or GPU via Core ML on iOS and NNAPI / GPU delegate on Android. CPU fallback guaranteed.
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Regional Model Packages Models are scoped to your region's insect fauna, keeping file sizes small and accuracy high for the species you'll actually encounter.
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One-time model download on first launch ~50–100 MB

The regional AI model package is fetched once on first launch, or pre-downloaded over Wi-Fi before you head out. After that, everything runs fully offline. We recommend completing this step at home before going into the field. Once done, Critterboard works anywhere — forest, meadow, or no-bars wilderness.

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Citizen Science Ready

Built with data interoperability in mind. Supports one-click exports compliant with universal Darwin Core biodiversity standards — the same schema used by GBIF and research institutions worldwide.

GBIF Compatible