# Psaltica Praxis — Play and Learn Byzantine Music > Play and Learn Byzantine Music (iPhone/iPad app by Nader Kostantin.) - Source: https://appshunter.io/ios/app/psaltica-praxis/id6758026686 (this page in markdown: same URL + `.md`) - Developer: [Nader Kostantin](https://appshunter.io/developer/1870413246) - Category: Music - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 63 MB - Languages: American English - Released: 2026-04-29 - Data updated: 2026-07-23 - User reviews in markdown: https://appshunter.io/ios/app/psaltica-praxis/id6758026686/reviews.md ## What is Psaltica Praxis? Psaltica Praxis is a Byzantine chant composition and notation app for iPhone and iPad, built for chanters, students, teachers, and composers of liturgical music. Learn a hymn by ear, then by eye. Each neume lights up as it sounds, so you can see exactly which note is playing, where you are in the chant, and why the melody moves the way it does. A printed book cannot show you that, and a recording cannot either. Loop any phrase until it is memorized, slow the tempo, and inspect any neume for its mode, pitch, and interval. Write chant the way it is actually sung. Enter neumes on a specialized Byzantine keyboard with gorgons, martyria, fthoras, ison, expressive signs, accidentals, and time symbols, then hear the hymn play back in the correct mode. Edit directly in the score with cursor-based insertion, replacement, selection, copy, and paste. Add multilingual lyrics in Greek, Arabic, English, and more, compose in LTR or RTL layouts, and organize your hymns in the composition library. Notation and editing tools include: - Cluster-aware Byzantine symbol entry and editing - Customizable keyboard palettes and a More Notes keyboard - Petasti variants and expressive signs including Varia, Omalon, Antikenoma, Psifiston, and Eteron - Time signatures, automatic measure barlines, and per-measure beat overrides - Interactive fthora mode selection with Greek mode names - Accidentals and fthoras targeted to individual notes within composite neumes - Fthoras attached directly to key signatures - Out-of-mode key detection with one-tap replacement - Note Inspector with mode, pitch, channel, applied rules, and moria distance - Customizable notation alignment and symbol positioning - Per-composition playback transpose and expression controls Playback and study tools include: - Byzantine chant melody and ison playback - Adjustable instruments, volume, tuning, tempo, and pitch bends - Selection playback and looping - Note-name display during playback and selection - MIDI export for playback and external workflow integration Printing and file tools include: - Printing and PDF export for clean chant scores at the choir stand - Configurable paper size, orientation, margins, scale, lyrics, title, page numbers, measure barlines, and time signatures - Composition library search and in-document Find - Importing, exporting, backing up, restoring, and sharing compositions, including opening .psaltica-backup files straight from the Files app - Settings backup, export, and import - In-app feedback and composition issue reporting Whether you chant in a parish choir, teach Byzantine music, or transcribe hymnography, Psaltica Praxis keeps the whole score on one device: compose the chant, notate the neumes, hear it played back, print it for the choir. The free tier allows up to 3 saved compositions. Free playback previews are available for up to 3 distinct compositions per rolling 24-hour period, with 60 seconds of playback for each composition. Export and share your compositions for free, and import shared compositions up to your saved-composition limit. Subscribe to unlock unlimited composition storage, unlimited playback, printing, PDF and MIDI export, backup tools, and the complete Psaltica Praxis workflow. Psaltica Praxis offers auto-renewable Monthly and Yearly subscriptions for premium access. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current subscription period. You can manage or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Psaltica Praxis | $39.99 | per year | | Psaltica Praxis | $3.99 | per month | ## Version history (last 4 releases) ### 1.1.22 — 2026-07-16 - Improved backup import from Files and Downloads. - Fixed backup import retry and free-tier limit edge cases. - Improved Byzantine playback accuracy for chromatic fthoras. - Fixed fthora placement issues that could affect note names or transposition. - Added support for longer Siopi rests. - Fixed glyph clipping, landscape layout, and audio stability issues. ### 1.1.15 — 2026-06-30 This major update expands composition, notation, playback, printing, and file management. Printing and PDF • Print compositions or export them to PDF with paper-size and format controls. • Include lyrics, title headers, page numbers, measure barlines, and time signatures. • Improved print spacing, scale, lyric sizing, Arabic tatweel rendering, full-bleed output, and multi-page reliability. • Reset now restores all print defaults, and typed values are applied immediately. Notation and Rhythm • Added the extended Petasti family, including Petasti Ipsili, Isson, Kendima, Oligon, Plus 5, and additional high-interval neumes. • Added Eteron, Omalon, Antikenoma, Psifiston, Varia, the Siopi beat extender, half-ifesis, third-ifesis, half-diesis, hard-chromatic Ni keys, and more key signatures. • Added time signatures, automatic measure barlines, and per-measure beat overrides. • Added configurable expression for Petasti, Varia, Omalon, and Psifiston. Playback and Free Access • Added per-composition playback transpose and separate playback volume controls. • Free users can save up to 3 compositions. • Free playback covers up to 3 distinct compositions per rolling 24-hour period, with 60 seconds for each composition. • Preview usage persists across app restarts, and returning to a composition continues its remaining time. • Subscribers continue to receive unlimited saving and playback. • Improved Android background playback, iOS Control Center state, accidentals, gorgon/Stavros anchoring, and selection playback. Editing and Inspection • Added a Note Inspector showing mode, pitch, channel, applied rules, and moria distance. • Added selection details, edge indicators, and looped selection playback. • Accidentals and fthoras can now target individual notes within composite neumes. • Added an interactive fthora mode picker with Greek mode names, including fthoras attached to key signatures. • Added one-tap replacement for out-of-mode key signatures while preserving attached fthoras and markers. • Improved fthora rendering, positioning, hit areas, deletion, anchoring, and mode resolution. Keyboard and Layout • Redesigned the musical keyboard with customizable palettes, a More Notes tab, landscape side-keyboard layout, collapsible key columns, and long-press flyouts. • Improved alignment across neumes, ornaments, accidentals, fthoras, and key signatures. • Added expanded alignment controls with dropdowns and sliders. • iPad now uses the full tablet display instead of an iPhone-sized compatibility view. Library, Search, and Settings • Added glyph-sequence library search and in-document Find. • Added export search, improved folder sorting, and newest-modified ordering. • Added compressed settings backup, export, import, and restore. • Added in-app feedback and composition issue reporting. • Updated tutorials for the redesigned composer, keyboard, measures, and expression controls. Corrections and Reliability • Refined Modes 4, 5, and 6, including pentaphone, short-scale, per-octave, and variable-length scale behavior. • Fixed Arabic lyric connectors and wrapping, Android text and modifier clipping, and key-signature clipping. • Fixed selection dragging and handles, print blank pages and overlaps, cancelled or stuck printing, and numerous notation alignment issues. • Improved unavailable-billing handling and Restore Purchases behavior. • Fixed hard-chromatic fthora note labels and preview identity after saving or renaming. • Added privacy-preserving diagnostics without collecting composition titles, file names, lyrics, notation, or advertising identifiers. ### 1.0.42 — 2026-05-02 - Stops playback before opening a saved composition. - Warns before replacing an existing composition from the Save modal. - Generates a unique default Save name for new compositions. - Defers paywall opening until after Settings / Import modals dismiss, with Android fallback handling. ### 1.0.41 — 2026-04-29 No release notes. ## Related topics [byzantine chant](https://appshunter.io/ios/topics/byzantine-chant) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-23.*