PrediSat

PrediSat grabs Iridium flare and satellite pass data from Heavens-Above.com and conveniently formats it on your phone. It also includes a few features to help you spot satellites, such as alerts, countdown, and night mode.

This is the ad-supported version. The Pro version includes more features.

Permissions:
Internet - Fetch satellite data or browse Heavens-Above site.
Location - Used on Heavens-Above to find predictions for your sky.
View Network State - Check connectivity before trying to download data.
Read phone state - Required by Greystripe ads.
Vibrate - Notifications.

Additional keywords: iss space station shuttle sky transit orbit prediction