Emerge Tools Profile picture
Mar 12, 2024 3 tweets 2 min read Read on X
The more apps we look at, the more common this problem seems

Many apps are putting file paths for images & icons, which VoiceOver will pronounce as "slash" or "underscore"

Here's an example we found in the @AlaskaAir app (sound on) + more examples 👇
Here's the annotated Preview for the video above + a handful of other Previews w/ the same issue

We used our accessibility screenshots and an AI to surface problems. For Alaska, there are 20+ Previews that use file paths in VOPreview with 'spotsaver_logo' & 'modal_close_button' as VO
Preview with 'alert_schedulechange_icon' as VO
Preview with 'auro/interface/chevron-right' as VO
🧵 w/ more detail on how this works

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More from @emergetools

Jan 23
We got multiple tags to analyze the Tapo @TPLINK app for being over 760 MB 👀

Let's see what we find in here 🤭🔎 Image
Total install size is 764 MB

204.6 MB
171.5 MB frameworks
45.4 MB main app target
27.7 MB plugins
a whole bunch of assets and localizations assets.carImage
We actually found that the current app version increased by ~162 MB compared to its previous version 🤔 so what changed?

They added @Unity along with a bunch of other stuff, mostly assets Image
Read 11 tweets
Jan 21
It's always the banking apps huh 🤦‍♂️

Figuring out why the @UBS banking iOS app is almost 800 MB 🥲 Image
First up, an overview

Frameworks - 336 MB (43%)
Main app target - 180 MB (23%)
Plugins - 55 MB (7%)

But what really sticks out is all that red, which signifies duplicate files ❌ Image
There's a handful of really simple optimizations here which could reduce install size by 102 MB or by 13% of total install size 📉 Image
Read 15 tweets
Jan 16
Customer: “Why is this app so big?”

Company: “Very cool features & lots of them + you have no way to check what I’m saying”

Not today corporate. Not today.

🧵 Why @ouraring is ~450 MB Image
This might be a bit long, so TL;DR

Oura is just duplicating a bunch of images, json, & localizations. The size isn’t b/c it’s “powerful with many features”

Here’s what the size actually is 👇

Assets: 207.8 MB
Localizations: 49.2 MB
JSON: 35.5 MB
Audio: 26.5 MB Image
The Oura app is mostly different bundles:

OuraImages (90.4 MB): Images
OuraComputeModels (26.1 MB): PyTorch models
Insights (16 MB): JSON files to score “sleep”, “readiness”, etc.
OuraLocalizations (12 MB): Localizations
OuraIcons (9 MB): Icons Image
Read 9 tweets
Jan 7
In 2024, @DraftKings decreased app size by 65% and improved app launch by +50%

Let’s take a look at what they did

🔬 Migrating from Xamarin → Native Image
The main app binary went from 97 MB → 11 MB (the project also changed its name from DK.Gaming.iOS → Sportsbook)

Aside from that, much of the size decrease came from completely removing all dynamic-link libraries (.dll, used in Xamarin projects) Image
We measured a 65% improvement in the native build vs. the Xamarin build (Xamarin) to didFinishLaunching

When we look at the base flamechart, you can see a significant amount of the runtime is from Mono functions

Mono is the C#/.NET runtime used by Xamarin and it’s now completely goneImage
Read 6 tweets
Dec 17, 2024
We got tagged to analyze this app on Thre*ds so we're posting it here too 🤭

🧵 Let's take a look at why the @intesasanpaolo iOS app is 699 MB 😳 Image
A quick breakdown 👇

448 MB (64%) dynamic frameworks 🫠
72 MB (10%) main app target
74 MB (11%) of assets Image
We first found some low-hanging fruit improvements to optimize install size, including

102 MB (15%) from stripping binary symbols
27 MB (4%) from optimizing images
10 MB (1.5%) from removing duplicates

That's 139 MB (20%) of size that could be easily reduced right there 🧠 Image
Read 7 tweets
Nov 11, 2024
We've got to stop meeting like this 😅

🧵 taking a look under the hood of the @Yelp iOS app Image
Install size weighs in at ~318 MB, but ~4 MB of that is the watch app ⌚️

High-level breakdown:

130 MB dynamic frameworks
47 MB assets
34 MB main app target binary
26 MB localizations

For reference, @GoogleMaps weighs in at ~296 MB (7% smaller) Image
Emerge found 245 images that could be optimized to help save 21 MB (~7%)

We found two nearly identical images of this woman with her dog — one with a vignette and one without. Are both images used in the app? Only Yelp could answer that 🕵️ Image
Read 8 tweets

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