Tenney – JI Tuner & Lattice
Easily visualize JI intervals.
Archived App (Last seen on 25 Jul 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
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About
What's New in Tenney
0.3
January 28, 2026
Tenney - a ratio first tuner and lattice for just intonation Tenney is a musician’s tuner built around intervals instead of only note names. It shows live pitch as simple fractions (like 3/2) so you can hear and see how every note relates to a chosen root in just intonation. SEE INTERVALS INTUITIVELY * Live pitch readout with ratio, plus or minus cents vs 12 TET, and Hertz * Confidence meter to judge how stable the pitch is * Adjustable root (for example 415 or 440 Hz) and prime limit * High precision pitch tracking designed for real world performance EXPLORE A LIVE LATTICE * Interactive 3 by 5 plane with pinch to zoom and smooth panning * Tap any node to see its fraction p slash q, cents vs 12 TET, and Hz at a glance * Prime overlay chips (7, 11, 13 and beyond) to reveal higher prime families * Axis Shift ribbon (plus or minus 3, 5, 7, 11) to slide the lattice along musical directions * Selection tray to collect and compare intervals while you explore MADE FOR JUST INTONATION MUSICIANS * Ratio centric labels with proper oddization * Prime limit control (3, 5, 7, 11, 13 plus) to match your harmonic language * Detection strictness options (Loose, Performance, Strict) for different situations * Designed to feel immediate, informative, and stage safe THOUGHTFUL BY DEFAULT * Works offline, no accounts, no ads, no tracking * Light and Dark appearance, portrait and landscape * Fast, fluid interface built for modern Apple devices WHAT IS IN THIS VERSION * Core tuner with ratio labels, cents vs 12 TET, and confidence * Lattice version 0 point 3: explore intervals, toggle prime overlays, shift axes, build selections * Practice timer and root following test tone for focused sessions WHO TENNEY IS FOR * Performers and composers working in just intonation * Ear training, rehearsal, and structural exploration of just intonation spaces * Anyone curious about harmonic relationships beyond 12 TET SUPPORT Questions or feedback We would love to hear how you are using Tenney in your practice and performance.
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