# apeCsound — Csound 7 AUv3 synth & effects > Csound 7 AUv3 synth & effects (iPhone/iPad app by apeSoft.) - Source: https://appshunter.io/ios/app/apecsound/id6821382219 (this page in markdown: same URL + `.md`) - Developer: [apeSoft](https://appshunter.io/developer/464660782) - Category: Music, Education - Price: Free - Age rating: 4+ - Requires: iOS 17 · 33 MB - Released: 2026-10-21 - Data updated: 2026-10-29 ## What is apeCsound? apeCsound brings the full power of Csound 7, one of the most complete sound synthesis and signal processing languages ever created, inside your music apps. Write or paste any Csound orchestra, press Apply, and apeCsound turns it into an Audio Unit (AUv3) instrument or effect you can play, record and automate in GarageBand, Logic Pro for iPad, AUM, Cubasis, Loopy Pro and any other AUv3 host. It also runs as a standalone app. THE CSOUND ENGINE, BUILT IN Csound 7 is embedded in the app: nothing else to install Thousands of opcodes: oscillators, filters, physical models, granular, spectral (pvs), FM, waveguides, reverbs, delays, OSC and much more Process live audio from the host as an effect, or play it as a MIDI instrument Audio channels follow the host layout automatically Host transport available to your code as control channels: tempo, play/stop, position, time signature PARAMETERS YOUR HOST CAN AUTOMATE Describe sliders, switches, menus and XY pads directly in your .csd file apeCsound builds the control panel for you and exposes every parameter (176 in all) to the host for automation and MIDI learn Values are read in Csound with a simple chnget; chnset writes them back and moves the controls Organise the panel in collapsible groups with a comment in the code Snapshots: save, recall, rename and overwrite complete sets of values, stored with the session Undo and redo for every change, with one shared history LIVE CODING Evaluate sends the selection, the current instrument block or a single line to the running engine, without recompiling: redefine an instrument while it plays, change a global value, trigger a score event A dedicated Evaluate line for one-liners such as "i 2 0 1" SEE WHAT YOUR CODE IS DOING Monitor: every value written with chnset appears as a meter, a multi-bar card or a text line, with dB scale and history on request Channels: a diagnostic list of every channel the engine knows, with type, direction, value and who writes it; channels that nobody writes are flagged and can be mapped to a parameter in one tap Graphs: function tables and display signals drawn live, redrawn whenever a table changes Console: all Csound messages and errors, with errors marked on the line in the editor A CODE EDITOR MADE FOR CSOUND Syntax highlighting with dark and light themes, line numbers and adjustable text size Opcode completion that inserts the complete syntax, with outputs and optional arguments, in classic or modern (functional) style Jump between arguments with Tab Inline help bar showing the syntax of the opcode under the cursor, or the error on that line Find and replace, comment/uncomment, smart indentation Designed for touch: native-style selection handles, magnifier, edit menu and long-press caret navigation Built-in link to the Csound reference manual SESSIONS AND FILES Open and save standard .csd files from Files, iCloud Drive or any document provider Your code, parameters and snapshots are saved with the host project Start from a ready-made template, a blank session or one of nearly 200 included examples Import Cabbage and CsoundQt files: their widgets become parameters, their meters and displays show up in the Monitor ACCESSIBILITY Fully usable with VoiceOver: named controls, real menus, an accessible code editor and XY pad, complete keyboard navigation Whether you are a sound designer, a composer, a teacher or a student, apeCsound turns your iPad and iPhone into a complete Csound workstation that lives inside your favourite music apps. ## Is apeCsound safe? Not enough ratings yet to assess apeCsound. ## Is apeCsound legit? apeCsound appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for apeCsound is 75 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.0.5 — 2026-10-28 VoiceOver support apeCsound can now be used with VoiceOver: every control is named, menus are real menus, the code editor is an accessible text area, the XY pad announces both axes, and the whole interface works from the keyboard. Live coding Evaluate (Shift+Return) sends the selection, the instr block or the current line to the running engine without recompiling. The Evaluate line in the help bar runs one-liners such as "i 2 0 1". Channels panel Every channel the engine knows, with type, direction, value and who writes it. Channels the code reads and nobody writes are flagged: the usual reason for "it does not move". Map creates the parameter in one tap. Parameters - 64 toggle parameters (176 DAW parameters in all). - XY pad: two Float parameters as one two-dimensional card. - Monitor: channels written with chnset shown as meters, sparklines, multi-bar cards and text; chn_k attributes (db, spark, int, hidden, group:Name). - Snapshots menu stays open: tap to recall, pencil to overwrite, rename or delete. - Groups from Cabbage groupbox/plant containers; Option+click opens or closes all groups. - Host transport channels (HOST_BPM, IS_PLAYING...) as in Cabbage. Graphs Function tables are redrawn live when their content changes: a free oscilloscope. Import Cabbage buttons are imported, combobox defaults are right, and when a widget type exceeds its slots the indicators are dropped first so the buttons that matter get a slot. Fixes Parameters no longer stay at 0 after Apply; the console never hides errors; many examples updated for Csound 7 and six new test files. ### 1.0.4 — 2026-10-26 apeCsound is now powered by Csound 7.0.0, with improved audio processing, built-in OSC support and more reliable parameter control. New features and improvements: - Pause and resume audio processing. - Improved parameter controls and updated value ranges. - Organize parameters into collapsible groups. - Save and recall parameter snapshots. - Improved touch controls and scrolling. - New Graphs panel for visualizing signals and function tables. - Find and Replace in the code editor. - Updated editing shortcuts and undo/redo behavior. - Built-in example projects with file import and management tools. - Improved file browsing and saving on iOS. - Configure additional folders for audio, include and output files. - Updated guide, menus and interface for a smoother experience. AUv3 now supports MIDI-controlled audio effects, allowing you to play Csound instruments from your favorite music apps. Bug fixes and stability improvements across the app. ### 1.0.2 — 2026-10-24 Added OSC support Added built-in examples ### 1.0.1 — 2026-10-21 + Graph view + Fixed params name and ranges ### 1.0 — 2026-10-21 No release notes. ## More apps by apeSoft - [iDensity](https://appshunter.io/ios/app/idensity/id464660779) - [iPulsaret](https://appshunter.io/ios/app/ipulsaret/id565880268) - [Stria](https://appshunter.io/ios/app/stria/id625740515) - [iVCS3](https://appshunter.io/ios/app/ivcs3/id665703927) - [Sparkle - Cross-Synthesis](https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094) - [SOLO Nr.19](https://appshunter.io/ios/app/solo-nr19/id884781236) All apps by apeSoft: https://appshunter.io/developer/464660782 --- *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 2026-10-29.*