Features

Tailored to a pastor's needs.

Theostack is a focused tool. Every feature exists to help you do better theological research, faster, with sources you can trust. Eleven specialized assistants in four registers. Five included with Core, six more with Premium.

Voice mode

Speak your questions. Hear grounded answers.

Voice mode lets you do theological research while you walk, drive, or work at a whiteboard.

Every spoken answer is backed by the same curated library, the same source fidelity as text chat. Natural conversation, zero setup. Works on any device with a microphone.

Voice mode
You asked
“What does Augustine say about grace and free will?”
Answering
Augustine teaches that grace is prevenient. It precedes and enables the will, freeing it to choose God…
From the library · 4 citations

Projects

Organize your research.

Create projects for sermon series, Bible studies, or research topics.

Upload your own notes, outlines, and documents. Theostack searches them alongside the library in every conversation. Everything stays organized. Nothing gets lost.

Romans 8 series
12 documents · 3 conversations
Sermons on Hebrews
10 documents · in progress
Family discipleship
5 documents · ongoing

Scripture

The Bible, built in.

Automatic verse resolution and inline scripture display. Ask about a passage and see the text alongside theological commentary.

Cross-references included. Supports BSB and KJV with more translations coming.

“For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.”Ephesians 2:8-9 (BSB)
Romans 8:28 · BSB
“And we know that God works all things together for the good of those who love Him, who are called according to His purpose.”
Cross-references
Genesis 50:20 · Ephesians 1:11 · 1 Peter 1:7
[*]The roster

Eleven specialized assistants. Four kinds of work.

01
Preach
Sermon prep and feedback.
Sermon Summary
Core
Upload a manuscript or transcript and receive a devotional summary or study guide with key quotes, discussion questions, and additional reading.
Sermon Feedback
Premium
A structured feedback report covering exegetical accuracy, theological depth, structure, application, and gospel centrality.
02
Study
Exegesis, theology, history, research.
Exegesis
Core
Rigorous, source-grounded exegetical help on any passage. Context, structure, key terms, and commentary from the library.
Doctrine and Theology
Core
Confessionally grounded answers to doctrinal questions. Scripture, the historic creeds, and the best theologians in the library.
Church History
Premium
Two thousand years of Christianity. People, councils, movements, and controversies, grounded in primary sources.
Deep Research
Premium
Cross-domain theological research, quote finding, series planning, and deep dives across the full library.
03
Shepherd
Counseling and care.
Counseling
Core
Biblically grounded frameworks, key resources, and practical wisdom for any presenting issue.
Marriage and Family
Premium
Theology of marriage, premarital preparation, parenting, and family discipleship.
Church Health and Leadership
Premium
Polity, elder and deacon ministry, membership, discipline, staff culture, leadership development, congregational revitalization.
04
Engage
Evangelism and apologetics.
Evangelism and Outreach
Core
Personal evangelism preparation, outreach strategy, evangelistic preaching, and training the congregation to be faithful witnesses.
Apologetics
Premium
The hard questions. The problem of evil, the reliability of Scripture, faith and science, competing worldviews, intellectual challenges.

The Theostack difference

Source fidelity is not a feature. It is the foundation.

Every answer cites real passages from real texts. No hallucinated citations. No fabricated quotes. No conflated authors. You see exactly where every claim comes from.

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