# Tenney – JI Tuner & Lattice — Easily visualize JI intervals. > Easily visualize JI intervals. (iPhone/iPad app by Sebastian Suarez-Solis.) - Source: https://appshunter.io/ios/app/tenney-ji-tuner-and-lattice/id6753315813 (this page in markdown: same URL + `.md`) - Developer: [Sebastian Suarez-Solis](https://appshunter.io/developer/1822404647) - Category: Music, Education - Price: Free (on sale, was $9.99) - Age rating: 4+ - Requires: iOS 18.6 · 36 MB - Languages: American English - Released: 2025-12-01 - Data updated: 2026-07-25 - User reviews in markdown: https://appshunter.io/ios/app/tenney-ji-tuner-and-lattice/id6753315813/reviews.md ## What is Tenney? Tenney is a musician’s tuner with a live interval lattice. It helps you hear and see how any note relates to a chosen root pitch using simple fractions (like 3/2), with tools that help you practice in just intonation. Hear intervals, not just notes * Live pitch readout with ratio, ± cents vs 12-TET, and Hertz * Confidence meter to judge how stable the pitch is * Adjustable root (e.g. 415, 440 Hz) and prime-limit controls * High-precision pitch tracking designed for real-world performance conditions Explore a live lattice * Interactive 3×5 interval plane with smooth pinch-to-zoom and panning * Tap any node to see its ratio, cents, and Hz at a glance * Prime overlay chips (7, 11, 13, and beyond) reveal higher-prime families * Axis Shift ribbon (±3/5/7/11) to slide the lattice along musical directions * Selection tray to collect intervals while you explore Made for the way JI musicians think * Ratio-centric labels with proper oddization and factoring * Prime-limit control (3/5/7/11/13+) to match your harmonic language * Detection “strictness” options (Loose / Performance / Strict) for different contexts * Designed to feel immediate, informative, and stage-safe Thoughtful by default * Works offline; no accounts, no ads, no tracking * Light and Dark appearance support, portrait and landscape with beautiful themes * Fast, fluid UI that takes advantage of Apple’s latest glass effects where available * Built to sit comfortably beside your other pro music tools What’s in this version * New tuner modes with ratio labels, cents vs 12-TET, and confidence * Expanded lattice: explore intervals, toggle prime overlays, shift axes, build selections, make scales you can play in-app Who it’s for * Performers and composers working in just intonation * Ear-training, rehearsal, and structural exploration of JI spaces * Anyone curious about harmonic relationships beyond 12-TET Support Questions or feedback? We’d love to hear how you’re using Tenney in your practice and performance. ## Version history (last 2 releases) ### 0.3 — 2026-01-28 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. ### 0.2 — 2025-12-01 No release notes. ## More apps by Sebastian Suarez-Solis - [SyncTimer - Ensemble Stopwatch](https://appshunter.io/ios/app/synctimer-ensemble-stopwatch/id6747689247) - [chrony - synced notepad](https://appshunter.io/ios/app/chrony-synced-notepad/id6756780213) - [THE TUB](https://appshunter.io/ios/app/the-tub/id6761667406) All apps by Sebastian Suarez-Solis: https://appshunter.io/developer/1822404647 --- *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 2026-07-25.*