v35.9Improved te-form teaching, protected Sentence Practice answers from audio hints including blanked words, preserved unfinished questions when switching between Word and Sentence Practice, added the prayer expression ai fukaki and its Heavenly Father opening, restored native material theme transitions where supported, corrected iOS safe-area layout and iOS theme behavior, synchronized Spectrum Shift across the full interface and fixed its branding contrast, added temporary development cache busting for hosted builds, and updated the home-screen/app icon.
v34Finalized the theme system with material-based palettes, smooth color/material transitions, and theme-cycle refinements.
v33Reorganized Objectives into five Christian communication domains, rebuilt Language Skills, expanded practical expressions and Explain, and refined Active Learning.
v32Added question-type filters and the Active Learning drawer with proficiency and status summaries.
v31Rebuilt Kiku around fixed Lesson, Objectives, and Settings views with compact stats and anchored lesson actions.
v30Added sentence objectives, Theme Cycle, and improved audio behavior when changing filters or practice modes.
v29Compacted branding and Settings, moved study filters into Objectives, added Danger Zone, and simplified controls.
v28Reworked Word Practice into a rolling adaptive vocabulary pool with proficiency-gated progression and maintenance review.
v27Established Kiku: Christian Japanese as the official identity, added install metadata and icon support, and preserved legacy progress compatibility.
v26Renamed the app Kiku: Christian Japanese and expanded Sentence Practice with curated combinations from learned material.
v25Reworked themes into a mobile-friendly visual palette gallery and expanded the theme collection.
v24Completed theme coverage across the interface and improved study-filter controls.
v23Expanded themes across the full UI and added several new palettes.
v22Added audio Skip, selectable themes, Theme Cycle, and the changelog.
v21Expanded Explain into richer mini-lessons with structure, usage, contrasts, and terminology.
v20Unified learning into Word Practice and Sentence Practice with category filters.
v19Expanded testimony vocabulary, sentence patterns, learning objectives, and prayer practice.
v18Made Learning Tags reveal Seen / Correct / Wrong / Proficiency stats.
v17Added mastery celebrations, confetti, and a mastery sound.
v16Added local saving plus portable backup export/import.
v15Enabled Explain before answering and improved component explanations.
v14Added explicit introductions before newly unlocked material is tested.
v13Rebuilt the learning engine around lexical/form tags, retries, mastery protection, expanded verb forms, and listening practice.
v12Introduced the atomic-tag model, redemption queue, and mastery immunity/protection concepts.
v11Fixed startup one-choice form questions and missing data for newer verb forms.
v10Added dedicated teaching for suru verbs and the reusable suru conjugation engine.
v9Added polite negative, polite past, and volitional forms.
v8Added four drill modes and more structured adaptive scheduling.
v7Improved hierarchical verb/form mastery and adaptive progression.
v6Shifted scheduling toward verb-centric mastery and stronger weak-item targeting.
v5Added menus, mastery visibility, and broader progress controls.
v4Added contextual teaching explanations and reduced answer leakage.
v3Added feedback tones/flashes and faster answer flow.
v2Added automatic audio and quick-answer behavior to the romaji-first trainer.
v1Initial adaptive church Japanese verb trainer with 20 high-value verbs and five forms.