Android vs. iPhone OS Zachary West
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Android vs. iPhone OSZachary West
Community
Android iPhone OS
iPhone OS customer base: 85 million
Android customer base: 5-10 million
iPhone OS third-party apps: 190,000
Android third-party apps: 40,000
Application Count by Operating System
Freedom
Rejected legitimate iPhone apps: Hundreds
Unable to be installed outside App Store.
Torrent remote control, Google Voice, etc.
Removed Android apps: Tethering Apps
Able to be installed outside Market.
Can install any signed .apk from any source, except Motorola Backflip (AT&T).
Life Under Apple
Approval dependent upon unstable Apple policy
Restriction for morality, politics, adult-content, copyright violation, “duplicating” built-in applications
Removal of release control from developers
Human Interface Guideline enforcement
Uniformity of behavior
Prevents unexpected experience in all applications
Life Under Google
Significant levels of spam in Android Market
Little to no moderation of dangerous applications
Poor browsing and discovery experience in Market
Top-sellers make little profit compared to App Store
Geared towards open-source or free applications
Fully-integrated cloud experience
Android OS Divergence
iPhone 2G 3.1.3
iPhone 3G 3.1.3
iPhone 3GS 3.1.3
iPod Touch 1G 3.1.3
iPod Touch 2G 3.1.3
iPod Touch 3G 3.1.3
iPad 3.2 (iPad-only)
HTC G1 1.6
Samsung Galaxy 1.5
HTC Hero/G2 1.6 (modified)
Motorola Cliq 1.5
Samsung 5700 2.1
Motorola Droid 2.1 (3 months late)
HTC Google N1 2.1
Motorola Backflip 1.5 (modified)
Environment
Objective-C vs. Java
Retain/release vs. Garbage Collection
Cocoa Touch libraries vs. Java libraries
Integrated experience in Android OS
Helper applications, multitasking
Uniform experience in iPhone OS
No application task management, common paradigms
Notification System
Unified notification area in Android OS
Download status, unread mail, unread SMS, current playing song, etc.
Can delay until ready.
Modal and generic notifications in iPhone OS
Last notification on lock screen, while-running notification when unlocked; overrides previous.
Cannot delay until ready.
Punishing Developers
Apple: “Applications may only use Documented APIs in the manner prescribed by Apple and must not use or call any private APIs. Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine, and only code written in C, C++, and Objective-C may compile and directly link against the Documented APIs (e.g., Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited).”
Welcoming Developers
Android NDK allows compiling native applications from other native-code languages, such as C and C++.
Allows for including native-code implementations in programs executing on the Dalvik VM.
Easy migration, re-use of large corpus of code.
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