Digital tools for the edification of the Church.

A constellation of carefully crafted applications drawn from the Reformed tradition.

Available on iOS, Android, and the web

The applications

Free to use. No advertising.

Sing the Psalms

The 1650 Psalter with sheet music — words and tunes together for singing.

A letter a day

A daily letter from Samuel Rutherford, read aloud in a warm narrator's voice.

Search the standards

The constitution, principles, and Acts of Assembly of the Free Church of Scotland (Continuing) — searchable and AI-queryable.

Hear the Psalms

The psalter without music — spoken aloud, made for memorisation.

Coming soon

Study Casuistry

Reformed resources to understand Biblically based ethics.

Planned

Updates from Charis Development.

June 16, 2026

A new website for Charis Applications.

Voluntary gifts cover hosting, maintenance, and the work of preparing texts and audio. No paywalls.