Here's a top level view of the latest version of LinkedIn
300 MB for just dynamically linked frameworks & Plugins is...a lot. In fact, just the Dylibs & Plugins today are bigger than the entire app was back in November 2022 🫠
Mar 8 • 9 tweets • 4 min read
Finding accessibility issues in an app is an incredibly manual task that can take hours depending on the size. Which seems like a perfect place for ✨AI ✨
🧵Surfacing accessibility issues in the @Drizly app w/ AI 🧠
A quick background - our Snapshots product turns Previews into snapshots. A recent feature gives the ability to use AccessibilitySnapshot w/ one line
You don't need to write test code to get snapshot tests or to snapshot VoiceOver elements
May 23, 2023 • 22 tweets • 8 min read
Last week we wrote how @peacock reduced app size & app launch after moving from RN to native
By beautiful chance, another streaming app did the same this week. Did the same effects occur? Well, yes, no & it depends
So, HBO Max is now Max. New app, new bundle id, new logo, & entirely new codebase. Let's start by comparing the iOS size and architecture
iOS
HBO Max (old app): v53.20.1 - 60.4 MB install size
Max (new app): v1.0.1 - 108.8 MB
The new iOS app is 48.4 MB (~80%) bigger
May 22, 2023 • 7 tweets • 3 min read
How did the @Twitter iOS app change over the last 6 months? Why did the latest release of Google Translate Android reduce app size by 1/3rd?
We try to make these questions easier to answer, which is why we're very excited about our newest feature, AI summaries of build diffs
Jumping right in - Twitter v9.59.1 vs. v9.34.6 (iOS)
Overall size decreased by 34 MB, but how quickly can we identify what changed?
May 18, 2023 • 8 tweets • 4 min read
So, what does the @OpenAI ChatGPT iOS app look like under the hood? Well we took a look at a decrypted build
🧵 How the ChatGPT iOS app is made
Overall install size is 41.9 MB and has a fairly simple structure. Here's our X-Ray treemap
May 17, 2023 • 12 tweets • 4 min read
What happens to an app's performance when it goes from react native -> native?
The @peacock app just made the switch on iOS & Android and had a significant change in size and startup time
🧵 Performance impact of switching to native
A quick primer
RN let's you create mobile apps for Android and iOS using js & react. 1 codebase, 2 apps. It has an active community & there are certainly reasons you'd want to use RN
That said, if performance is important, native is going to be better
Jan 17, 2023 • 6 tweets • 5 min read
Notable iOS app size changes (install size) over the last week
🧵 How Best Buy could've avoided the increase altogether
Best Buy v22.12.10 (previous)
Install Size: 148.6 MB
Best Buy v23.1.10 (latest)
Install Size: 174.9 MB
The difference in size between the two is due to the latest release being built with Xcode 14
Jan 12, 2023 • 9 tweets • 4 min read
The @CandyCrushSaga iOS app (v 1.243.0) is made up of over 22k files
Over 90% of the files are under 4 KB
🧵 Why having many small files = size bloat
+ how Candy Crush could cut it's install size by almost 20%
The candy crush iOS app has an install size of 264.8 MB
55.5 MB of the app is "levels", which are made up of .txt files like `episode190Level3.txt` that define a level in JSON format
Jan 10, 2023 • 9 tweets • 3 min read
Inspired by this @Kelset tweet, let's take a look at how the @discord iOS app increased by 54.2 MB (36%) install size in version 158.0
Discord Version 157.0 measured at 148.7 MB install size.
More than a third of the app was from main.jsbundle (RN)
Jan 4, 2023 • 21 tweets • 8 min read
The largest iOS apps all have a common problem
Localization files account for
23% (74 MB) of @Uber
23% (30 MB) of @WhatsApp
17% (53 MB) of @MicrosoftTeams
17% (50 MB) of Nike Run Club
🧵 Here's how Airbnb reduced the size of localizations by 82% with the help of Emerge
First, a quick primer on localization files
Localization files are used to store translations of text in your app. Each file is a list of key-value pairs for text that need translating. These files exist for every language your app supports
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