For many collectors, digital apps have replaced traditional books because they offer real-time price updates and offline access.

: Focuses on identifying varieties, determining rarity, and assessing the condition of coins. It is well-regarded for its detailed illustrations of "mint varieties" (variations in the coin's design).

: Users on Google Play praise the app for its "game-changing" level of detail and the ability to track personal collections while at markets.

This is one of the most comprehensive modern guides available for download.

Searching for reviews of books on USSR coins to download generally points to three highly-regarded resources, ranging from classic reference books to modern digital applications.