# Opus Air — Your pollen, your forecast

> Your pollen, your forecast (iPhone/iPad app by Opus Accountancy Limited.)

- Source: https://appshunter.io/ios/app/opus-air/id6786674830 (this page in markdown: same URL + `.md`)
- Developer: [Opus Accountancy Limited](https://appshunter.io/developer/1886285078)
- Category: Weather
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 15 MB
- Languages: American English
- Released: 2026-08-30
- Data updated: 2026-09-02
- User reviews in markdown: https://appshunter.io/ios/app/opus-air/id6786674830/reviews.md

## What is Opus Air?

Most weather apps show a pollen number. One number, the same for everybody.

But nobody is allergic to "pollen". You're allergic to birch, or grass, or mugwort. On a high-birch morning in April, a general pollen index tells you nothing you can act on.

Opus Air fixes that.

My daughter was suffering badly with hay fever for many years, until one day enough was enough and she got a test. It turns out that Hazel Tree, so I created an app to help her see the good days and bad days and plan accordingly.

YOUR ALLERGENS, YOUR SCORE

Pick what you actually react to, right down to individual tree species. Opus Air takes today's levels for those species and blends them with temperature, wind and humidity into one Comfort score out of 100.

Then it tells you what's dragging it down. "Good to get out. High birch." Now you know whether to take an antihistamine, close the car vents, or just go.

Two people standing in the same street get different scores. That's the point.

WILL I STAY DRY?

A second score reads the next 24 hours at a glance. Where Apple provides minute-by-minute data, Opus Air times your next dry window precisely: rain in 12 minutes, clear for the next hour.

And it turns that into a straight answer for what you're actually doing. Run, dog walk, washing on the line, round of golf: Go now, Wait, or Skip.

IT TELLS YOU WHEN IT DOESN'T KNOW

If a reading is missing, Opus Air says so instead of quietly filling the gap. If a number is an hour old, it says how old. Most apps hide that. We think a forecast you can trust beats one that always sounds confident.

ALSO INSIDE

Home Screen and Lock Screen widgets. A rain Live Activity that counts down on your Lock Screen. An Apple Watch app with Comfort and Rain complications. Pollen alerts at a threshold you set. Pollen history charts so you can see your season coming. Multiple saved locations. Ask Siri "is it a good day for my allergies?"

Full VoiceOver support and Dynamic Type throughout.

PRIVACY

No account, no sign-in, no analytics, no advertising, no tracking. Your location is rounded to roughly a square kilometre on your device before anything leaves it. Your allergen profile syncs through your own iCloud, never through us.

FREE, AND PAID

Weather, rain timing and activity verdicts are free. Always.

Opus Air Allergy unlocks the personalised pollen score, species-level detail and alerts. Allergy + Minute Rain adds minute-level rain timing where it's available. Both start with a 7-day free trial. Cancel any time in your Apple Account settings.

Weather data provided by Apple Weather. Pollen data provided by Google.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Allergy | $0.99 | per month |
| Allergy | $1.99 | per month |
| Allergy | $9.99 | per year |
| Allergy | $19.99 | per year |



## Version history (last 1 release)

### 1.0 — 2026-08-30

No release notes.

## More apps by Opus Accountancy Limited

- [Opus PM](https://appshunter.io/ios/app/opus-pm/id6760795577)
- [Image Printer](https://appshunter.io/ios/app/image-printer/id6760891211)
- [Opus Clients](https://appshunter.io/ios/app/opus-clients/id6761480770)

All apps by Opus Accountancy Limited: https://appshunter.io/developer/1886285078

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*