iPhone (10000 programs)

Pros: Stunning graphics and authentic engine sounds. Real-world cars and tracks. Active seasonal events and rewards.

Cons: Unlocking premium vehicles can feel grind-heavy.

Pros: Multi-account support. Works on non-Microsoft accounts. Allows both QR code and number code. Generates code every 30 seconds. Backup and recovery features.

Cons: Does not work on sites that uses HOTP standard codes.

Pros: Viewing documents is clear and simple. Supports sharing via SkyDrive or SharePoint. Resume reading from where you last opened. Offers quick, easy access to your online docs. Lets you view and edit documents attached to email messages. Add comments to documents.

Cons: Editing features are limited. Temperamental copy and paste. Few templates.

Pros: Free to download and use. Includes a wide range of content.

Cons: Only suitable for Jehovah Witnesses. Can be difficult to locate specific content.