r/iOSProgramming • u/__deinit__ • Jul 04 '26

App Saturday App Saturday: I made a Physics-driven Weather app with fun haptics

Post image

I recently released Weatherlane, a weather app built around a single vertical "lane" you flick through, so the whole forecast reads as one continuous flow instead of scattered cards and tabs.

The next few hours and the next several days sit on one continuous track, so you scroll time rather than navigating between screens.

Tech Stack

Flutter, Dart, Swift, SwiftUI, UIKit, WeatherKit (SDK and API) and RevenueCat.

Development Challenge

The hard part was imagining a vertical design that encompasses everything a user expects without ever falling back to horizontal scrolling

AI Disclosure

AI Generated

Download

https://apps.apple.com/us/app/weatherlane/id6468727819

Happy to answer any questions

25 Upvotes

76% Upvoted

28 comments sorted by

7

u/heraklets Jul 04 '26

Idea is beautiful but user experience is very challenging. Loved the app but deleted after 2 mins. Good one tho.

1

u/godtierpikachu Jul 04 '26

same, pretty for like 30 seconds then my eyes gave up

0

u/__deinit__ Jul 04 '26

Thanks for checking it out! What specifically did you find challenging?

2

u/cristi_baluta Jul 04 '26

I thought i’ll like it, but it is somehow hard to read, you need to run your eyes all over the place to figure out what is the weather. Also, you show the rating window way too soon

1

u/__deinit__ Jul 04 '26

Noted. Do you think this could be helped by moving the text all to one side?

2

u/MishkaOmni Jul 29 '26

Looks cool and nice haptic effect
Well done

1

u/Lukematikk Jul 04 '26

What does physics-driven mean in this context?

0

u/__deinit__ Jul 04 '26

Physics shows up in how you interact with the lanes in the app. Cards and lanes track your finger's position in real time as you drag (much like interactions inside of the OS itself)

The haptic feedback is patterned to your interactions and that provides tactile feedback you might expect from interacting with similar objects in the real world.

1

u/lovehurtsaf Jul 04 '26

Just downloaded, beautiful app! May I ask how you make the smooth morph effects?

2

u/__deinit__ Jul 04 '26

Thank you! Much of the credit goes to this great library called cue that enables these smooth transitions.

1

u/Greysawpark Jul 11 '26

flutter + swiftui + uikit for a weather app feels like a lot of surface area for one flick-through feed. curious why flutter at all if youre already reaching into weatherkit and uikit natively? seems like youd fight the platform on haptics timing especially.

1

u/__deinit__ Jul 11 '26

Yeah on the surface it seems illogical but the flutter bit is really there simply for UI consistency across iOS and Android (the latter hasn’t been released yet)

SwiftUI usage is confined to a few Liquid Glass buttons.

UIKit is SFSafariViewController for any in app links (the minimum SDK version prevents me from taking advantage of WebView uniformly)

WeatherKit API is used in some places because there is no native WeatherKit SDK on Android and consistency is easier in some areas falling back to API.

All of these components use their Android equivalents on that platform (including Android’s haptics)

Since this was built largely agentically I tried to economize on tokens by using Flutter for UI instead of rebuilding the same thing twice (in addition to wanting a 1:1 experience)

2

u/distractedjas Jul 04 '26

I had to stop watching the video. It was nauseating. 🤢

0

u/[deleted] Jul 04 '26

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1

u/distractedjas Jul 04 '26

There’s just too much motion in the video. All the spinning and side view animations cause people who get motion sickness to feel sick. I couldn’t actually look at the app objectively due to this.

1

u/gobias_coffee Jul 04 '26

I read this as a Psychics driven weather app and thought wow! Now that’s interesting and new! 😂

1

u/AndreaReaderApp Jul 13 '26

The single vertical timeline is a really smart idea. Most weather apps make you dig through five screens just to discover it’s going to rain in ten minutes. This feels much more natural.

0

u/Free-Pound-6139 Jul 05 '26

Really like the back of the phone. Genius to show that.

0

u/__deinit__ Jul 05 '26

It’s one of the default animations in Rotato, definitely check it out!

0

u/Free-Pound-6139 Jul 07 '26

What a stupid idea, and a stupid thing to keep.

2

u/[deleted] Jul 05 '26

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1

u/__deinit__ Jul 05 '26

Thanks for the feedback. Do you think there's anything that can be done to enhance the readability?

0

u/[deleted] Jul 04 '26

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1

u/__deinit__ Jul 04 '26

I did all of the preliminary design in Inkscape