Voice analysis for iPhone
MindTimbre™ shows your pitch, the harmonics in your voice and the musical ratios between them. Every number has its formula one tap away, and every pattern is tested against chance.
Coming to the App Store. iPhone, iOS 17 or later. Android to follow.
Why MindTimbre
A tuner tells you the note. A spectrum app shows you a jagged graph. Neither tells you what you're looking at, and some frequency apps attach health meanings to numbers that were never measured.
MindTimbre does the opposite. It shows the pitch, the harmonics and the musical ratios in your voice, labels what each peak is, and explains every calculation in plain language. When you look for patterns, it tells you honestly whether they stand out or would turn up by chance.
Why the shape of your voice matters →
The result: you understand your voice, you can see it change over time, and you can trust what you see.
The shape of your voice
When you sing or speak a note, your voice doesn't make one frequency. It makes the note plus a stack of harmonics above it, at two, three, four times the frequency and beyond. How strong each harmonic is gives your voice its colour, or timbre. Drawn as a graph, that's the shape of your voice.
Two illustrative voices on the same note. A tuner would show both as A3. MindTimbre shows the harmonics, numbered 1 to 10, that make them sound different.
Pitch is only the starting point. The shape is why a friend knows it's you on the phone after one word, and why two singers on the same note never sound the same.
Small changes in vowel, resonance and placement move the peaks before you can easily hear the difference. Sing “ee” then “oo” on one note and watch the shape change.
Save voice prints weeks apart and compare them on one chart, harmonic by harmonic, instead of relying on your memory of how you used to sound.
Record before and after a warm-up, a lesson, a practice session or a tone session, and see exactly what changed and what didn't.
“The third harmonic is stronger” is easier to work with than “it sounded brighter”. Share prints with your teacher or practitioner and point to the same thing.
Harmonics, overtones and whole-number ratios stop being theory when you can see them in your own voice and play them back.
The shape describes sound, nothing more. It isn't a reading of your health, mood or body, and MindTimbre never treats it as one.
Five tools in one app
Live: your note and how many cents sharp or flat, a pitch trace and a live spectrum, then a session summary where you rate how it went. Voice prints: guided takes (a held "ah", a hum, a glide or counting) with the average spectrum, median pitch and strongest peaks, each labelled as a harmonic where it is one.
Any frequency as a note, its intervals in just or equal temperament, every octave equivalent, the 16-step overtone series and a full ratio table you can play. Try the Lambdoma matrix.
Look for repeated notes, intervals and shared differences in a set of frequencies, then see how often the same patterns turn up in random sets.
Single tones, fifths, fourths, triads, overtone runs and binaural pairs, with a fixed output ceiling and gentle fades to protect your hearing.
Every live session with its summary, your smiley rating, how you felt and your notes, so you can look back and see what helped.
Analysis happens on the phone, with no account needed. Share a voice print as a picture whenever you like. Cloud backup and practitioner sharing arrive in 2027, and will always be optional.
Inside the app
Real screens from MindTimbre on iPhone.
Who it's for
Hold a note in tune, see your range and resonance, and compare today's voice print with last month's. Practice with real feedback instead of guesswork.
Show a student what changed, not just tell them. Before-and-after voice prints, harmonic labels and exportable data make lessons concrete.
Build tone sets from exact ratios, play intervals and binaural pairs safely, and record each client's voice print. From March 2027, Practitioner adds a portal for client sessions, and later monitoring a client's session live from wherever you are. See what Practitioner includes →
Every formula is published and every result is reproducible. Tone timings are logged to the second, ready to line up with brainwaves from Muse, BrainBit or Vilistus.
Pattern Lab
With enough frequencies and a loose enough tolerance, matches always appear. Pattern Lab counts the matches in your set, then runs the same search on up to 5,000 random sets from the same range, so you can see whether a result stands out.
The table shows a run on nine published example frequencies at a ±10 cent tolerance.
| Pattern | Found | Chance | Result |
|---|---|---|---|
| Same note class | 1 | 0.6 ± 0.8 | Chance |
| Interval links (4th, 5th) | 4 | 1.2 ± 1.1 | Above chance |
| Fourth–fifth links | 0 | 1.2 ± 1.0 | Chance |
| Recurring differences | 1 | 1.8 ± 1.2 | Chance |
1,000 random comparisons, fixed seed, so the same input always gives the same result. Interval links come out slightly above chance because voice peaks are harmonics, and harmonics naturally sit a fifth or fourth apart.
How it works
Hold an "ah" for 15 seconds. MindTimbre finds your pitch and the strongest peaks, and labels the harmonics.
Tap any peak to see its note, intervals, octave equivalents and ratio table, and hear each one.
Send the peaks to Pattern Lab to see which relationships stand out from chance and which don't.
Play a tone set or binaural pair, then record again and compare the two voice prints on one chart, with every harmonic's change listed.
Voice print, tones, intervals and binaural pairs on iPhone.
Brainwaves from Muse, BrainBit, Vilistus and more, recorded while your tones play.
With brainwaves
Play a MindTimbre tone set while your brainwave headset records, then compare voice prints from before and after the session. From 2027, MindTimbre Cloud will put the tones and your brainwaves on one timeline.
What we stand for
Tap ⓘ on any section to see the formula behind it. The full engine specification is available on request.
MindTimbre never links a frequency to a nutrient, organ, emotion or condition. It is not a medical device.
Each analysis stores the engine version and settings, so you can reproduce it exactly.
Your recordings stay on the phone unless you export them or turn on cloud sync.
How MindTimbre is different
| Typical frequency apps | MindTimbre | |
|---|---|---|
| How numbers are worked out | Hidden | Every formula one tap away |
| What a peak means | Left for you to guess | Labelled as a harmonic where it is one |
| Patterns in frequencies | Presented as findings | Compared with up to 5,000 random sets |
| Health claims | Often implied | None. It measures sound. |
| Your recordings | Often uploaded | Stay on your iPhone unless you choose |
| Works with brainwave headsets | Rarely | Muse, BrainBit, Vilistus (coming soon) |
Who we are
MindTimbre is built by Durham Systems Management in the English Lake District. We've spent years building software that reads signals from the body, and we built MindTimbre the same way: measurements first, every formula published.
Founding members
Join the launch list and get 40% off your first year: Pro for £17.99 or Practitioner for £59. Start free, with a 14-day trial of Pro at launch. Practitioner opens with the portal in March 2027.