Software · Books · Art

Tools for the details that matter.

TDH Digital Works, LLC creates practical software for personal organization and recordkeeping, publishes useful books under Tanya Hammil, J. T. Willow, and Willow Press, and offers printable watercolor tutorials through Willow Press Art Box.


Our software

PepFolio app iconPepFolio

PepFolio helps people organize peptide reference information and their own inventory, schedules, reminders, administration records, weight progress, and reports in one place.

Explore PepFolio, its screenshots, and download options.

Records entered in PepFolio are stored in a local database on the device. The app includes user-controlled backup and restore tools.

Purpose
Personal organization and recordkeeping
Platform
Windows and Android
Availability
Available now

PepFolio is an organizational and calculation tool, not medical advice. It does not diagnose conditions, recommend substances or doses, or determine whether a substance or schedule is safe or effective.

Willow Press Art Box

Printable watercolor tutorials.

Explore beginner-friendly digital lessons featuring flowers, wildlife, and farmyard subjects. Each tutorial includes guided instruction and printable outline choices.

Explore the watercolor collection

Six printable watercolor tutorial paintings

Books & publishing

Explore the library.

Discover books published under Tanya Hammil, J. T. Willow, and Willow Press. Browse the current collection, view the book covers, and find each title directly through Amazon.

Browse the full book library

Featured title

Nature's Healing Pantry

A featured title from the TDH Digital Works publishing library, available through Amazon.

View on Amazon