Identify Insect Bite iPhone · Free · No account
Free check · no account

Find out what bit you.
Start with three taps.

Pick the month, where the marks are and what they look like. You get the three most likely culprits for where you are — from verified sighting records, not guesswork. Then the app reads the actual photo.

  • 31 biting species, from mosquito to recluse
  • Built on 807,618 verified sighting records
  • Clear "see a doctor" signals, not vague advice
What bit you? Narrow it down 3 taps
01 · When
02 · Where on you
03 · What it looks like

Most recorded in August

Answer 2 more for a sharper shortlist
  1. Mosquito biteStrongest match · 92%

    Single bumps scattered over exposed skin. Usually 1 to 3 days, sometimes a week in children.

    Read the full profile →
  2. Bald-faced hornet stingAlso possible · 84%

    Often several — the colony defends aggressively. Usually swelling for several days.

    Read the full profile →
  3. Black fly biteAlso possible · 76%

    Several, along the hairline, ears and ankles. Usually up to a week, sometimes with lasting swelling.

    Read the full profile →
A shortlist is as far as a web page can go.
The app reads the actual photo of your bite, rates how serious the reaction looks, and gives a day-by-day care plan you can re-check as it heals.
Open the full report in the app
Free to download · iPhone & iPad · no sign-up
31 species Ticks, spiders, fleas, lice, wasps
807,618 Verified sighting records behind the seasons
50 states · 7 countries Local season for where you are

What the answer looks like

Not a page of search results — one report you can act on.

Mosquito

The likely culprit

Named insect with a confidence level, plus the runner-ups it could be.

Severity, plainly

Low to high on one scale, so you know if this needs attention or patience.

A day-by-day plan

What to do now, and what should have changed by tomorrow.

The red flags

Spreading redness, fever, a bullseye ring — named, with a clear next step.

If you only remember one thing

Most bites just need time. These three don't.

Trouble breathing or swelling lips

Call emergency services. Don't wait for an app, ours included.

An expanding ring after a tick

Photograph it, note the date, and see a doctor this week.

Warmth, pus, or fever on day 3

That's infection, not the bite. It needs a prescription, not cream.

Or just read about it

Free, no account — every species with what the mark looks like, how long it lasts, and when it peaks where you live.

All 31 species →

The honest answers

Is this a medical diagnosis?

No. Identify Insect Bite gives you an AI assessment, not a medical diagnosis. If your symptoms are severe or getting worse, seek medical care right away.

How accurate is the identification?

Our AI compares your photo and symptoms against common bite patterns to give you the most likely match along with a confidence level. Results are meant as an informed starting point, not a certainty.

What happens to my photo?

Your photo is used to generate your report and is never stored on our servers.

Do I have to pay to use it?

The bite guides on this site are free to read with no account. The app is free to download; photo assessment is a paid in-app subscription. You can see the price in the App Store before anything is charged.

How do I cancel a subscription?

In-app subscriptions are handled by Apple, not by us. Open Settings on your iPhone, tap your name, then Subscriptions. Refunds are requested through Apple.

Does it work for kids' bites?

Yes, you can check a child's bite the same way. For infants, or whenever you're unsure, always check with a pediatrician or doctor.

Which insects can it identify?

Mosquitoes, ticks, bed bugs, fleas, spiders, wasps and bees, ants, flies, head lice, and more — with a clear "not enough information" when a photo isn't conclusive.

Still itching? Check it in the app.

One photo to an answer. Keep the report and re-check the bite as it heals.

Know exactly what bit you Photo assessment · free to download
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