CEDAR: ALLERGY TRACKER

Understand your pollen day.
And your own allergy patterns.

See separate pollen levels near your U.S. ZIP, explore practical guidance, and connect the context with how you feel. Useful from day one—before your first check-in.

Download on the App Store

Free to download · iPhone · Optional Premium

  • No account needed
  • History on your iPhone
  • No ads
Cedar's pollen-first Today screen, with separate modeled pollen levels and an optional symptom check-in. Example data.
The released app · Example data

More than a single pollen number.

YOUR OUTLOOK

Know which pollen is up

See oak, birch, grass, and ragweed separately when available. Choose a watchlist to put the types you care about first.

PRACTICAL INFORMATION

Find a useful next step

Explore general guidance for pollen days, with links to the sources behind it. No logging streak required.

YOUR OWN CONTEXT

See how your days compare

Add quick symptom check-ins when you want. Review your week, with missing days kept distinct from symptom-free days.

Pollen is modeled for your area, not measured personal exposure. Coverage varies by species and location; missing readings stay missing.

A clearer view, from today to the week ahead.

Current screenshots from Cedar 1.0.1, using example data. Select a screen to see it full size.

Source-linked general guidance in Cedar, shown in the approved botanical App Store design.
Practical guidance · Free
Helpful information, with sources you can read.
Cedar symptom history with gaps preserved and an example preliminary observation, not a promised result.
Your history · Free
Notice changes without treating gaps as zeros.
Cedar Premium forecast comparing the same pollen species across up to five days, using example data.
Look ahead · Premium
Compare the same pollen across forecast days.

Start with the outlook. Free.

Today's supported pollen levels, your watchlist, source-linked general guidance, symptom check-ins, basic history, qualified headline observations, and raw CSV export stay free.

More context with Cedar Premium

Explore up to five days of forecast detail, detailed qualified comparisons, and formatted 30-, 60-, or 90-day reports. A subscription does not guarantee that a personal pattern will emerge.

Optional auto-renewing monthly or annual subscription. Current prices, renewal terms, and any eligible trial are shown in the app before you subscribe.

Useful context. Honest limits.

Do I need to record symptoms first?

No. Start with the local pollen outlook and general guidance. Check-ins are optional; they build your personal history over time.

Will Cedar tell me what I am allergic to?

No. When enough compatible records exist, Cedar can show preliminary observations about symptoms alongside modeled pollen. Those are not proof of a trigger or predictions of your symptoms. Sometimes no clear association appears.

Does it send pollen alerts?

Not in this release. Open Cedar to review the outlook. Live pollen lookups need an internet connection and a supported U.S. ZIP.

Prefer to start on paper?

Print a free seven-day seasonal allergy diary. No signup or app required.

Get the free printable diary

Make sense of your next pollen day.

No account to create. Your symptom history stays on your iPhone; live pollen lookups need an internet connection.

Get Cedar for iPhone

Already using Cedar? Get help with the app.

Cedar does not diagnose allergies or provide treatment advice. Forecasts and personal observations can be incomplete or wrong. Follow your clinician's care plan for medication and medical decisions.