1) Remind Me Later (https://itunes.apple.com/us/app/remind-me-later/id408236729?...) - Let's you create Google calendar events from your desktop with single shortcut. It works like google "quick event" text box. Just write the reminder with a day or time at the end. I created a new calendar in Google to group all my reminders.
2) Calendar Notifications Plus (https://play.google.com/store/apps/details?id=com.github.qua...) - Ensures you get a notification for every calendar event, even ones without an alarm. From the lock screen you can dismiss or snooze the reminder. You can configure the list of snooze times and the default swipe length. You can move the event to a different date and time. You can pick which calendars it monitors, so if you just want it to see your reminders, it can.