Every morning, you check the weather. It says 16°C.
But does that feel different from yesterday?
ThanYesterday tells you: "It's 3° warmer than yesterday." — the only comparison that actually matters.
How It Works
Time of Day | What You See |
| Morning (4–11am) | "3° warmer than yesterday at this time" |
| Afternoon (11am–5pm) | Today's high vs yesterday's high |
| Evening (5pm–4am) | "Tomorrow morning will be 2° cooler than today" |
No more guessing. Just open the app and feel the difference.
Features
Smart Notifications — Morning alert before you leave: "5° colder than yesterday · 11°C at 7am". Evening heads-up: "Tomorrow morning will be warmer." Set your own alert times.
Bauhaus Weather Icons — Geometric shapes inspired by Swiss graphic design. Sun, rain, snow, fog — each condition gets a beautiful animated icon that changes with day and night.
Multi-City Support — Swipe between cities. Each one shows local time, weather comparison, and matching background colors — all calculated independently per timezone.
Home Screen Widget — Check yesterday vs today without opening the app. Pre-generated 6-hour timeline keeps the widget always fresh and accurate.
Air Quality — Real-time fine dust data from KMA/AirKorea (Korea) and Open-Meteo Air Quality (worldwide).
4 Languages — Korean · English · Japanese · Traditional Chinese
Who It's For
Tired of meaningless temperature numbers You think "what should I wear today?" every single morning You want a weather app that's actually beautiful You track weather across multiple citiesDownload
Search "ThanYesterday" on the App Store
iOS only · iPhone optimized · $1.99/month subscription
Made by kkiruk studio · 2026
2026Data: Apple WeatherKit · Open-Meteo · KMA · AirKorea
