TrainStash is a collection management platform built for model train enthusiasts, from new hobbyists to serious collectors. It helps users catalog locomotives and rolling stock across HO, N, O, and other scales, recording details such as manufacturer, model number, road name, condition, purchase price, value, photos, and storage location. Its AI photo identification feature can help identify trains and their catalog details from an image.

Collectors can browse manufacturer catalogs, track progress toward completing a series, and manage wishlists with target prices to help avoid duplicate purchases. TrainStash also provides estimated value tracking and an integrated price guide for monitoring market trends. For collection protection, users can create insurance-ready inventory reports that include photos, condition notes, purchase dates, and values. Additional tools support maintenance logs, service history, restoration records, and DCC tracking.

The platform supports brands including Lionel, Bachmann, Kato, Atlas, Athearn, Märklin, Hornby, and many others. Users can export their collection data to CSV or PDF.