GrooveMeter vs ARPJAM

GrooveMeter is a real-time BPM (Beats Per Minute) meter and practice tool for musicians who want to improve their timing. It listens to your playing through the microphone and continuously detects your tempo, making it easy to see how steady you really are. GrooveMeter runs as a stand-alone app or as an AUv3 plug-in inside compatible AUv3 hosts such as Logic Pro, AUM or GarageBand. Simply open the app, grant microphone access, and start playing. Within seconds, your tempo appears on screen and updates in real time. The main BPM display shows a smoothed tempo reading alongside a confidence indicator, so you can tell when the detector is certain about what it hears. When the audio is unclear or too quiet, GrooveMeter's confidence indicator will let you know by dropping to a lower percentage. A scrolling BPM history graph visualizes how your tempo changes over time. You can adjust the visible time window and set a target BPM to get immediate feedback on how close you are to the desired tempo. Color cues show whether you are on target, slightly off, or drifting significantly. Tap tempo is built directly into the graph. Tap in time to get a quick read on your tempo manually, which is useful when you want to compare live playing against a tempo in your head rather than relying on audio detection. GrooveMeter can record practice sessions, capturing both mono audio and a BPM snapshot every second. After recording, you can scrub through the session, see the tempo at any point, and review overall statistics such as median BPM and tempo stability. All recorded sessions are stored locally and accessible through the session browser. Each session includes clear statistics like duration, median BPM, minimum and maximum tempo, and a stability percentage that reflects timing consistency. Sessions can be exported as a zip archive containing the raw audio recording and a PDF practice report. The report includes a BPM timeline graph, summary statistics, and a written assessment of your timing with practice-oriented feedback.

ARPJAM is an arpeggio synthesizer that generates ever-evolving ambient music. Layer two independent arpeggio engines, each with its own waveform, scale, and pattern, and let the app weave an endless soundscape that shifts and breathes on its own. ■ Two Arpeggio Engines ARP A and ARP B run simultaneously, each with its own mode, scale, range, waveform, filter, and envelope. Five pattern modes: Random & Chord, Repeat, Random Single, Skank, and Drone. ■ Generative Drums A probability-based drum machine. Tune the firing density, double-hit chance, and open/closed hi-hat ratio for kick, snare, and hihat to create rhythms that evolve naturally alongside the arpeggio. ■ Sound Design Four waveforms — sine, triangle, sawtooth, square. Adjust the low-pass filter, attack, and overdrive per engine. Add depth with ping-pong delay and reverb. ■ Sync with External Instruments [NEW in v1.4] Ableton Link support — wirelessly sync tempo and bar phase with Ableton Move, Live, Koala, and other Link-enabled instruments on the same Wi-Fi network. USB-C MIDI Clock reception is also supported. Sample-accurate timing alignment, with a fine-tune Offset slider for each setup. ■ Redesigned Settings Panel [v1.4] Settings are now organized into five colored sections — Oscillator, Filter, Envelope, Algorithm, and Effects. Each section collapses individually or in bulk, and the state persists between launches. Jump directly to any section via the side rail (iPad) or sticky bar (iPhone). Clear square ON/OFF switches and vivid theme colors — orange for ARP A, lime for ARP B, cyan for Drums — make the whole panel far easier to navigate. ■ Save & Recall Four start presets (Default + SAVE 1/2/3) let you recall your favorite setups with a single tap from the start screen. Presets can be exported and imported as .arpjam files to share with other ARPJAM users. ■ Built-in Timer Choose countdown or infinite mode. The timer fades out with a gentle resolving chord — perfect as a sleep timer or as a companion to meditation. • 8 scales including pentatonic modes • 12 keys (Just Intonation / Equal Temperament switchable) • Groove control for swing feel • BPM 30–200 • English / Japanese language support • Ableton Link / MIDI Clock sync