Available now on Android

Identify any bug from your phone.

The free What Is That Bug app turns your camera into a pocket entomologist. Snap a photo, get the species name, harm level, and what to do — in under 10 seconds.

Download APK How to install

Free · No signup · Play Store version coming soon

Built for speed and accuracy

In-app camera

Shutter-style capture with flash + flip. No system camera handoff, works on every Android.

AI under 10 seconds

Same identification engine as our website, tuned for 20,000+ species.

Harm level at a glance

Color-coded badges tell you instantly if that bug is harmless, irritating, or dangerous.

Favorites + history

Save any species to revisit later. Every bug you scan is automatically logged.

Light & dark mode

Follows your phone's theme automatically, or lock it manually in Settings.

Share results

Send the identified photo plus species info to friends in one tap.

How to install the APK

The Play Store version is under review. In the meantime, you can install directly — takes under a minute.

Tap the download button above

Your browser will save whatisthatbug.apk to your Downloads folder.

Open the downloaded file

Pull down your notification shade and tap the download notification, or open Files / My Files app and find whatisthatbug.apk.

Allow install from this source (first time only)

Android will ask you to allow your browser to install apps. Tap Settings → enable the toggle → go back. This is a one-time prompt; nothing gets changed permanently.

Install & open

Tap Install, wait a few seconds, then tap Open. You're in.

Why sideload? Google Play requires a multi-day review before your first release goes live. The APK you download here is the exact same signed build we're submitting to Play. Once the Play Store listing is approved, you'll be able to update through the Store automatically.

Quick questions

Yes. No signup, no trial, no paywall. We show a banner ad on result screens and an occasional interstitial. That's it.

Identification needs internet because the AI runs on our servers. Browsing bugs you've already identified and your favorites works offline.

The APK is signed with the same key we submit to Google Play. You can verify the package name (com.whatisthatbug.app) matches our Play listing once it's live.

iOS version is on the roadmap. For now, the website at whatisthatbug.com works great on iPhone browsers.

Photos you identify are sent to our server to run AI, then stored anonymously to improve accuracy. We never share them. See our privacy policy.

Ready to identify?

Free, tiny download, works on any Android 8+.

Download the APK