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Emerge Tools Profile picture
@emergetools
Mar 12 • 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

Emerge Tools Profile picture
Dec 17
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
Emerge Tools Profile picture
Nov 11
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
Emerge Tools Profile picture
Oct 3
Did someone say app size?!

Here's why @thetrainline iOS app is so big 🧵 Image
Total install size is 342 MB

Basic breakdown:

115 MB of Plugins
109 MB main app target binary
34 MB sqlite file 👀 (more on this later)
23 MB Dynamic Frameworks

The rest is assets, localizations, misc. Let's start with the Plugins 🔌 Image
115 MB for two app extensions is a lot 🫨

We see two Plugins that look almost identical (58 MB vs. 57 MB) with many of the same modules in each.

They can likely use a Dynamic Framework to share code between these two app extensions to help reduce total Plugins size Image
Read 9 tweets
Emerge Tools Profile picture
Sep 24
Do you want a paid wallpaper app from @MKBHD?

Maybe not? Well do you want to know how its made 🤓

🧵 Looking inside the new @Panels_art app, starting with ads Image
🎤 Ads have been a big topic

Panels is using Google Ads in both iOS (GAD) & Android

On Android, is the largest dependency in the dex com.google.android.gms.internal.ads

Image
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☠️ Looking at it another way, we're monitoring over 16k classes in the entire Android app with Reaper

Of that, 4,172 (25%) of classes are related to Google Ads 😬 Image
Read 11 tweets
Emerge Tools Profile picture
Sep 5
Oohhoho this one looks fun!

Let's take a look at why the @SantanderUK iOS app is at a whopping 613.3 MB and how 35% of it does nothing for the user 🧐 Image
Right off the bat, it looks like most of the app (587.6 MB) is dynamic frameworks

Dylibs let you share code between targets, but are larger than static frameworks b/c static let's the compiler strip dead code. It's likely that Santander doesn't need ALL of those to be dynamically linkedImage
Also, note the "String Tables" in the dynamic frameworks— these are unnecessary binary symbols that can be stripped out and save 215.5 MB (35% of install size) for Santander UK 🤓Image
Image
Read 10 tweets
Emerge Tools Profile picture
Jul 9
Good question @VishalMalvi_ ! Here's what's going on behind the scenes of the @gmail iOS app 👇 Image
Here are the biggest chunks of the app

Main app target - 225 MB
Plugins - 99 MB
Dylibs - 46 MB
Localizations - 130 MB 👀
Image
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The Localization size might shock people, but its a frequent problem in iOS

When downloaded, iOS apps contain all languages that an app supports, whereas on Android, a user will only download the languages they need

This is *one* of the reasons that Android apps are typically smaller than iOS
Read 11 tweets

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