The Eucharist Presentation (now twenty-two slides) has three new slides on why it matters: goodness (union with Christ), beauty (heaven’s worship around the Lamb) and oneness (“one loaf, one body,” and an honest answer to “why can’t I receive at Mass?”). The closing slide now asks one question for each of the four doors: truth, goodness, beauty and oneness. Every slide now shows which door it opens.
Lessons, reference sheets, practice drills, Progress and the Changelog now have a back link at the top, such as “← Teachings” or “← Recall”. Reference sheets also link straight to the full lesson, and lessons and reference sheets link to the slides when a Presentation exists, so you don't have to scroll to the bottom on a phone.
Teachings that have a Presentation now show a “slides” link next to the reference sheet on the Teachings page, so you can open the slides without going into the lesson first.
The Mary & the Saints lesson now has an eighteen-slide Presentation. It follows “the woman” from Genesis 3:15 through Eve, Jael and Judith to Mary, then the Ark at the Visitation, what it carried and Revelation 12, covers the Marian dogmas, and finishes with the one-mediator objection, intercession in Scripture and the difference between honor and worship.
The Justification lesson now has a fourteen-slide Presentation. It starts with what both sides agree on, then covers imputed and infused righteousness, the strongest Protestant objection, “works of the law,” Paul and James, Clement and Chrysostom, and the Council of Trent.
The Church Fathers lesson now has a nine-slide Presentation on who the Fathers were and why they matter. It states both positions fairly, takes the “you can find a Father to say anything” objection head on, concedes what is true, and then shows what Clement, Ignatius and Justin held in common.
The Papal Authority lesson now has a twelve-slide Presentation on Peter, the keys and apostolic succession. It covers the rock, the Greek and Aramaic wording, Isaiah 22, Paul’s rebuke of Peter and the elder question, with the strongest Protestant reply on each. Quotes from Clement of Rome and Irenaeus were checked against the original texts.
The Canon of Scripture lesson now has a fourteen-slide Presentation on why the Catholic Old Testament has 46 books. It covers the Jewish canon, the early lists, Luther and the 66-book Bible, with the strongest Protestant reply on each argument. Quotes from Athanasius, Pope Innocent I, Carthage and Florence were checked against the original texts.
The Sola Scriptura lesson now has a fourteen-slide Presentation that asks whether the doctrine is biblical, historical, workable and logical. Each argument comes with the best Protestant reply. Fathers' quotes were checked against the original texts.
The Eucharist Presentation now has a slide on the Emmaus meal (Luke 24): the risen Jesus takes, blesses, breaks and gives bread, and the disciples' eyes are opened. It is also the ninth stop on the meals map, which now runs in three rows.
The last slide of the Eucharist Presentation now has four question cards (the miracle meals, the Bible, the first Christians, why it matters, which spans the full width and lists three fruits of Communion from the Catechism), a single “Read next” pointer to John 6, and a bolder invitation to read John 6 together.
The “the flesh profits nothing” slide in the Eucharist Presentation now shows three cards side by side: Jesus' “my flesh” earlier in John 6, the “the flesh” of verse 63, and what “flesh” usually means in John (3:6, 8:15), with a note on Paul's use in Romans 8:8.
The Eucharist Presentation (now eighteen slides) has a new slide for the last meal on the map: Jesus says he won't drink the cup again until the Kingdom (Matthew 26:29, Luke 22:16), and Revelation 19 shows “the marriage supper of the Lamb.”
On the Eucharist Presentation's “thread of meals” slide, the meals are now numbered and joined by arrows, in the order they happen from Melchizedek to the wedding supper.
The “new covenant” slide in the Eucharist Presentation now sets Jeremiah 31's promise of a new covenant and of forgiveness beside Jesus' words at the Last Supper (Luke 22:20, Matthew 26:28).
The first slide of the Eucharist Presentation now sets the scene (the night before he died, a meal with his twelve closest friends, words Christians still repeat), highlights Jesus' own words in Luke 22, and ends with a question for the listener.
The last slide of the Eucharist Presentation now has six questions that follow the slides: the meals map, Jesus repeating himself in John 6, “my flesh” vs. “the flesh,” Paul on guilt, the earliest Christians, and “once for all.”
The “isn't Christ's sacrifice once for all?” slide in the Eucharist Presentation now sets the concern (Hebrews 10) beside what the Church teaches (Catechism 1366–1367: the one sacrifice made present, not repeated), then points to the altar in Hebrews 13:10.
The “What the earliest Christians believed” slide in the Eucharist Presentation now reads as a short timeline (about 107, 155 and 350). Each writer gets a line on who he was and why he was writing, with the key phrase of his quote highlighted.
The “What Paul told the Corinthians” slide in the Eucharist Presentation now shows two short cards, “It is a real sharing” (1 Corinthians 10:16) and “Misusing it is serious” (11:27, 29), with the key phrases highlighted, in place of two long verses. The “the flesh profits nothing” slide also lost two bullets and gained the “my flesh” vs. “the flesh” point.
The “the flesh profits nothing” slide in the Eucharist Presentation now points out that Jesus says “my flesh” throughout the chapter (6:51, 54, 55, 56) but only “the flesh” in 6:63. The Greek verb note on the “Jesus doubles down” slide is also now marked on the word itself.
The Sinai slide in the Eucharist Presentation now sets the scene (Israel rescued, the covenant sealed with blood and then a meal in God's presence) and compares Exodus 24 with the Last Supper in two pairs, followed by how Hebrews connects them.
The Melchizedek slide in the Eucharist Presentation now sets Melchizedek beside Christ in three pairs: a priest of God Most High, a priest who doesn't end (Hebrews 5, 7), and the bread and wine at the Last Supper, followed by the Catechism's reading.
In the Eucharist Presentation, the slide on John 6 now shows the crowd's objection, Jesus adding “unless you eat… and drink his blood,” the disciples calling it a hard saying, and many leaving, with key phrases highlighted and a small note on the Greek verb for “eat”.
The Eucharist Presentation (now seventeen slides) covers the meals in the same order as the “thread of meals” map: Melchizedek, Passover, manna, Sinai, Elisha and the five thousand, then the Last Supper. Melchizedek and Sinai each have their own slide, the map adds Elisha and the five thousand, and each slide says which meal on the map it covers.
In the Eucharist Presentation, the Sinai covenant meal is now marked as named in the New Testament (Hebrews 9:18–20 quotes Moses' words), and Melchizedek's bread and wine is marked as taught by the Church (Catechism 1333) instead of “a later Christian reading”.
The Eucharist Presentation (now sixteen slides) has a new slide before the figure-of-speech slide that shows John 6:51–58 as it reads, with the repeated words highlighted (“eat my flesh and drink my blood”, “food indeed”, “drink indeed”). The Elisha slide was redone as a side-by-side with the feeding of the five thousand, and the four-actions slide now shows each meal getting bigger.
The Eucharist Presentation (now fifteen slides) has a new slide setting Elisha feeding a hundred men with twenty barley loaves (2 Kings 4) beside Jesus feeding the five thousand (John 6): barley loaves, “so many?”, and food left over. John doesn't name Elisha, so the slide calls it an echo.
The Presentation now has a full-screen button (or press F) that hides the browser's toolbars. Press Esc once to leave full screen, and again to leave the slides. It isn't available on iPhone, where the browser doesn't allow it.
The Eucharist Lesson now has a “Teach this as slides” button that opens a thirteen-slide Presentation for a friend or family member who isn't Catholic: the Last Supper, a map of the meals running through the Bible, the Passover and manna side by side with the New Testament, how Jesus and John explain misread figures of speech and why John 6 reads differently, and the earliest Christians.
The old saying about how the Old and New Testaments fit together (traced to Augustine, quoted in the Catechism) now opens the Type Drill with his portrait, appears in the Eucharist lesson, and is a new Fathers drill entry.
Two new Types (the covenant meal on Sinai and the Bread of the Presence), three Verse drill passages (John 6:60-66, Malachi 1:11, Hebrews 13:10) and a Flashcard on how Jesus takes, blesses, breaks and gives the bread.
Three new Verse drill passages (Hebrews 5:8-9, 2 Thessalonians 1:7-9, Ephesians 2:11-16) and a Pushback question on answering “Ephesians 2:8-9 settles it” fairly, without overstating what “works” means.
Seven new Verse drill passages on works and eternal life (Matthew 25, Revelation 20, Luke 10, Mark 10, 1 John 2, 1 Timothy 6, Luke 3), plus a Pushback question on how to talk about the sheep and the goats with a friend who sees works as only the evidence of faith.
A card on why Matthew 18:18 (binding and loosing for all the apostles) doesn't erase Peter's keys in Matthew 16:19.
After you answer, the Verse drill now shows the whole passage in the World English Bible, with a link to read it in the RSV-CE.
Progress now shows when you've practised and how your Flashcards are coming along.
Flashcards now show how far through the round you are, and what you've learned, right away.
The Progress table no longer scrolls sideways, and Pushback practice is easier to use on a small screen.
The menu, Home page and Progress table now use the same three words. Learn is the Teachings. Recall holds Flashcards and the verse, Fathers and Type drills. Rehearse holds Pushback practice and the Conversation drill. The old Practice page is now split between Recall and Rehearse. The Home page title is now simply “Understanding Catholicism”.
The Progress page now opens with one table of all 22 Teachings, showing Lesson, Recall and Articulation side by side so weak spots stand out. Each cell uses a symbol as well as a colour, and each title opens its lesson. Tap Lesson, Recall or Say it at the top to see what earns each symbol.
Home is now a short landing page with three ways in (Learn, Practice, Prepare for a conversation), a suggested four-Teaching path, and a link back to where you left off. The list of all 22 Teachings has moved to a new Teachings page in the menu, opening with Augustine's line on trusting the Gospel through the Church's authority. Lesson pages now link back to Teachings.
Added 1 Peter 3:15 (the "give an answer with humility" verse) to the Pushback panel and the Verses drill, and Jude 3 to the Verses drill and the Scripture and Tradition lesson. Both were checked against the World English Bible.
New material on the Sign of the Cross: what it means, how it is made, early evidence from Tertullian and Cyril of Jerusalem, and the reply to "it's superstition or vain repetition". Added to the Images and Repetition lesson and reference sheet, two flashcards, a Pushback question, two Fathers entries and three verses. The Fathers and verses were checked against their texts.
New material on the charge that the Church invents doctrines: public revelation closed with the apostles, so a new dogma defines what the deposit of faith already held. Added to the Scripture and Tradition lesson and reference sheet, a flashcard, a Pushback question, Vincent of Lérins in the Fathers drill, and Galatians 1:8-9 and Matthew 28:19-20 in the Verses drill. Each source was checked against its text.
The cross icon is now also served at the default address iPhones check, so Add to Home Screen is more likely to show it instead of a plain letter tile.
New verses for Sola scriptura, Justification, the Eucharist, Mary and the Saints, and Predestination: 2 Peter 3:15-16, James 2:14-26, Matthew 26:26-28, 1 Corinthians 10:16-17, 1 Timothy 2:1-5, Hebrews 12:22-24, John 6:44, 1 Corinthians 4:7 and Philippians 2:13. Each was checked against the public-domain World English Bible.
The Pushback page now ends with a short three-step method for real conversations: ask one clarifying question, name the shared conviction, then offer one distinction and stop.
The Canon of Scripture lesson, reference sheet and a new flashcard now mention that the Council of Florence's 1442 decree for the Copts lists all 46 Old Testament books before the Reformation, with a note on what it does and doesn't show. Checked against the council text.
The Fathers drill now has 1 Clement 44: the apostles knew there would be strife over the office of bishop, so they arranged for approved men to succeed them. Checked against the public-domain translation.
The Verses drill now has Matthew 18:18, Acts 15:28, Titus 1:5, 1 John 4:6 and 3 John 9-10, on the apostles' authority and handing it on. They are marked "Not yet checked" until the paraphrases are verified.
The icon you get from Add to Home Screen on iOS now has a solid crimson background, so its corners no longer show as black.
The Fulton Sheen line about what people wrongly believe the Catholic Church is now a banner with his portrait at the top of the Practice page, like the Newman quote on Home. The source is checked: the Preface to Radio Replies, vol. 1 (1938).
After Compare, the Conversation drill now shows the model answer and charity check together, then a second step to rate your reply. On-device feedback is tucked into an optional section and reads as clear paragraphs. The Compare button also matches the other drill buttons.
A new Search page finds where the site covers a topic, verse, Church Father or term across Lessons, Reference sheets, Verses, Fathers, Pushback questions, Conversation lines and Flashcards. Press / on any page to open it.
Lessons, drills and the coach now speak about talking with Protestants (Reformed, Baptist, evangelical, Church of Christ) instead of with family members.
The app is now called Deep in History, after Newman's line “To be deep in history is to cease to be a Protestant.” It appears with his portrait at the top of the home page.
The home page no longer has “Continue” and “Study next” banners. Each lesson now shows ○, ◐ or ● for not started, in progress or completed, with a count above the list.
The Verse drill has 11 new passages, the Fathers drill has 4 new quotations, and Conversation has 3 new lines on justification.
Teaching 22 explains how the Reformers and the Church use the word “justified” differently, with Luther's story and a way to talk about Paul and James.
Teaching 21 explains who the Church Fathers and Apostolic Fathers were, how to answer “the Fathers disagree,” and how to cite them honestly.
The Fathers drill now has 22 quotations (10 per round), and most were checked against the public-domain translations.
Teaching 20 explains what Confirmation is, answers the “extra ceremony” objection, and has a reference sheet and four Checks.
A Newman quotation now opens the reading in the Great Apostasy Lesson, and a Fulton Sheen quotation sits on the Conversation drill page.
Scripture & Tradition, Justification, Papal Authority, Mary & the Saints, the Eucharist and Confession each gain a short “More points to check” list in the Catholic response.
The Verse drill now has 32 passages, adding verses on the Church as pillar of truth, apostolic succession, works and grace, Mary and the saints.
The menu is now Home, Teachings, Practice, Progress and Theme. Practice lists every drill and Weak-spot review in one place.
The first four sections of every Lesson now have a Listen button that reads the section aloud, with Pause, Stop and a gear button that appear only while it plays. The gear opens the speed and voice choices.
Each Lesson now ends with a private notes box for questions you want to bring to a priest or sponsor, and sensitive Teachings suggest talking to a person.
Patristic Types, Verse and Fathers drill answers, and the “Then they'll say…” replies now show a small “Not yet checked” label until their sources have been verified.
A new Lesson and Reference sheet that separates three questions: why priests, why “Father,” and why celibacy, with four Checks.
A new Lesson and Reference sheet on “the brothers of Jesus,” “until,” and “firstborn,” with four Checks.
A new Lesson and Reference sheet on how to answer honestly and compassionately when family raises the clergy abuse scandal, with three Checks.
A new Lesson and Reference sheet on the idea that the early Church fell away and was restored, with a fair steelman, a Catholic response and four Checks.
Six Pushback questions now show the likely next objection and a short, charitable reply, so you can practice a whole conversation.
On desktop Chrome with built-in AI, you can ask for feedback on your written reply, with no account and no cost.
Match short quotations to the early Church Father who wrote them, and see which Teaching each one supports.
Match 20 key Scripture passages to what they say and the Teaching they support, in either direction.
See everything you most recently missed across Checks, Flashcards, Pushback, Types and the Conversation drill, grouped by Teaching.
Practice replying to ten realistic lines from family in your own words, then compare with a model answer and a charity check.
Recall and Articulation now show Building when your recent answers are right but there isn't enough practice yet to call it Solid.
Lessons can now show a Type, with its citation and whether the New Testament or a Church Father names it. A new Type drill practices matching each Type to its fulfilment.
The canon lesson now covers the common pushbacks about 73 versus 66 books.
The Flashcards topic dropdown now matches the Pushback dropdowns, and Pushback only offers session lengths that fit the questions available.
A new section explains what the Catholic Church does and does not teach about predestination, with Checks, Flashcards, Pushback questions and reference-sheet notes.
Choose from five themes (Cardinal, Parchment, Night, Forest and System) from the menu. The site also has a new arched-window cross icon.
Track your own progress by Teaching, with separate signals for completion, recall and articulation. Your home page suggests what to study next. Everything stays on your device and can be exported.
Two new Teachings with lessons, reference sheets, Flashcards and Pushback questions, plus corrected Catholic Answers links and new Coming Home Network sources.
A site navigation bar, a Teaching picker, a table of contents on each lesson, and links that open practice already filtered to a Teaching.
The site can be installed on your phone or computer and works offline.
The workspace moved to a faster site. All lessons and reference sheets are on it, with Flashcards and Pushback practice for each Teaching.