Tim Johnsen – Medium

Tim Johnsen

Low hanging fruit for iOS apps running on visionOS

Make your iOS app shine on visionOS

3 min readFeb 4, 2024

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Low hanging fruit for iOS apps running on visionOS

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Tim Johnsen

Update: after talking with the developer of Ivory about this we found that it's a flaw in the way…

1 min readJan 8, 2023

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Tim Johnsen
in
iOS App Development

Reduce share extension crashes from your app with this one weird trick!

Use NSData instead of UIImage

3 min readDec 16, 2022

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Reduce share extension crashes from your app with this one weird trick!

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Tim Johnsen
in
Instagram Engineering

Implementing Dark Mode in iOS 13

How we implemented dark mode at Instagram

7 min readOct 8, 2019

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Implementing Dark Mode in iOS 13

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Tim Johnsen

What’s New in Opener 1.8

Opener 1.8 is made for iOS 13!

2 min readSep 19, 2019

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What’s New in Opener 1.8

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Tim Johnsen

Opener 1.7

The latest update to Opener adds quick browser switching and refinements throughout.

3 min readDec 7, 2018

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Opener 1.7

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Tim Johnsen
in
iOS App Development

Extending UIActivityViewController

Improving the share menu on iOS

3 min readAug 6, 2018

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Extending UIActivityViewController

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Tim Johnsen

Three Years of Opener

Year in review for Opener's third birthday.

4 min readJun 1, 2018

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Three Years of Opener

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Tim Johnsen

Burst for iPhone

Turn your photo bursts into looping videos and animated GIFs

2 min readMar 20, 2018

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Burst for iPhone

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Tim Johnsen

What’s new in Opener 1.4

iOS 11 is here, and along with it we’ve got a sweet update to Opener ready!

3 min readSep 20, 2017

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What’s new in Opener 1.4

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Tim Johnsen

Tim Johnsen

iOS developer at Retro.app. Previously Patreon, Instagram, Pinterest, Flipboard. Creator of Opener, Close-up, and other apps.

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