How to I track and/or review reward redemptions from the app?

Within your Back Office, a Redemption or Collection Report can be generated at anytime. A specific date range for the report can be set and the reports is sent via email as a simple .CSV (i.e spreadsheet) file.

Reporting is accessed from the the 'Report' module in the back office.

Also, remember can be redeemed in the app and then if there is an item associated, it can then be collected in-store (What's the difference between a redemption and a collection?).