Ant Nuptial Flight Predictor2.29.1 - App Store

Will they fly today?

Every ant colony waits for the perfect day - then fills the sky with winged queens on their nuptial flight. Ant keepers wait for the same day. This app tells you when it's coming.

THE ANT FLIGHT INDEX
Instead of a meaningless percentage, every day gets a clear rating - No-fly, Quiet, Watchful, Promising or Prime - based on how today's weather compares with years of historical days at your latitude and time of year. Prime means the top ~10% of days in your season: drop everything and get outside.

HONEST ODDS
"About 1 in 7 days like this see a reported flight." Calibrated against thousands of real sightings - never a made-up probability.

HOUR BY HOUR
Flight confidence for the next 24 hours, the best three-hour window to go looking, and the week ahead at a glance.

WHY THIS FORECAST?
Full transparency: see exactly how temperature, wind, humidity, cloud, rain and pressure moved today's rating - straight from the model, no hand-waving.

POWERED BY ANT KEEPERS
The forecast is a machine-learning model trained on 10,000+ real flight reports from users worldwide. Report a sighting (or "I looked - no flights") and you make it smarter for everyone.

ALSO IN THE BOX
- Prime-day notifications - only when it matters
- Home Screen and Lock Screen widgets
- Live map of recent sightings near you
- Which queen size is in season (small / medium / large)
- Dark mode, C/F units, and 13 languages
- Free and open source. No ads, no tracking.

Made by an ant keeper, for ant keepers - and for anyone who has ever wondered why the sky is suddenly full of flying ants.

Version History Fixed: if a report can't be saved, the app now says so instead of thanking you. Reports that used to be lost after a failed connection are retried.

Fixed: nearby-flight alerts now give the distance to the nearest reported flight, not the farthest.

Changed: reports now go through a dedicated service, and the app no longer reads a device identifier. 2.29.1 3d ago Nearby flight reports now load faster, with improved reliability for the map and notifications. Includes the new in-app language selector. 2.28.2 Oct 1 Fixed: the next-24-hours chart showed grey bars on most days instead of its Flight Index colours.

New: tap any day in the upcoming week for its own "Why this forecast?" breakdown.

Improved: hour-by-hour ratings now use their own calibration, so the best window in a day is more accurate. 2.28.0 Sep 9 A new look: the app icon is now an Australian bull ant queen, drawn for this app.

The home-screen widget has been rebuilt to match the Ant Flight Index - the band for the day, the honest odds, and an ant that grows wings when a flight is likely. It now comes in two sizes, plus Lock Screen widgets.

A quieter first run: no nearby-flight notification before you have opened the app for the first time. 2.27.2 Sep 6 A whole new forecast. Every day now gets a clear Ant Flight Index rating - No-fly, Quiet, Watchful, Promising or Prime - with honest odds like "1 in 7 days like this see flights" instead of a bare percentage. See the best flight window, which queen size is in season, and exactly why the model thinks so. Plus an iPhone home-screen widget and the whole app in 13 languages. 2.19.1 Aug 22 Throttle calls to weather API and improve error message. 2.16.2 Aug 3 Improvements made to all features. Complete rewrite of the machine learning models. 2.16.1 Jul 29 Many visualisation updates, improved map performance and weather models. 2.13.9 Jul 20 Updated notification libraries. 2.12.4 Jan 29 Updated prediction models and bug fixes to the map. 2.12.0 Jan 22 Switching to emojis to illustrate nuptial flight conditions. 2.11.3 11/02/2025 Updated libraries and upgraded nuptial algorithm. 2.10.3 09/22/2025 Major upgrade to the libraries. 2.10.1 09/15/2025 Migration to new OpenWeatherMap API version. Update ML prediction models. 2.9.5 04/14/2025 Updated machine learning algorithms. 2.9.0 02/03/2025 Fix maps. 2.8.8 03/17/2024 Updated state to refresh hourly. 2.7.5 02/19/2024 Dependency updates and visual improvements on small screens. 2.7.3 02/05/2024 Updated daily prediction algorithm. 2.7.1 01/20/2024 Updated prediction algorithm. 2.7.0 01/11/2024 Significantly updated and improved predictions. 2.6.2 12/23/2023 Fixing the maps feature. 2.5.4 11/12/2023 Updated machine learning models. 2.4.7 08/19/2023 Updated machine learning models. 2.4.6 06/04/2023 Introducing notifications on good ant days, when nearby users report a nuptial flight, and regular updates of the widget. 2.4.4 04/20/2023