Airlist
Features
Dates Done Right
Start, Due, Repeat
iOS
Web App
Saved Search
Advanced filters gives you ultimate control over how you view your items
iOS
Web App
Backlinks and References
Two directional linking between items with autocomplete
iOS
Web App
Tags, Tags, Tags
Quick, convenient, autocompleted
iOS
Web App
Command Center
Everything, only a keystroke or tap away
iOS
Web App
Beautiful Formatting
Projects, headers, bold, underline, italic
iOS
Web App

Airlist Premium required for
Syncing between devices, custom Saved Searches, icons, and icon badge
Availible in the App Store for $2.99/mo or $24.99/yr