A practical soundcheck app for iPhone & iPad

Run a clearer soundcheck.
Know what to do next.

Place your iPhone or iPad by the mixer, start listening and keep the graphs and Soundcheck Coach in view. Tonezio shows what is happening now; Plus saves each pass so you can compare, learn and share the result.

  • RTA, spectrogram and room level on one screen
  • One current Coach action in plain language
  • No external measurement microphone required
  • No microphone audio is recorded

Practical soundcheck aid. Built-in microphones vary, so level readings are estimates and Coach suggestions must be checked by ear.

Tonezio on iPad showing Soundcheck Coach, RTA and spectrogram in split view
Actual iPad interface · Split view is the default
INPUTBuilt-in microphoneANALYSISRuns on the deviceDEVICESiPhone and iPadLANGUAGESEnglish and Swedish

At the mixer

Three steps, two ways to work

Use Live when you need an answer now. Choose Record when you want to test a change and return to the result afterwards.

01

Choose Live or Record

Live keeps the current advice and graphs on screen. Record stores the complete pass with timestamps.

You always know whether you are checking now or saving a pass.
02

Start the Soundcheck Coach

Play the system at a comfortable soundcheck level. Tonezio waits for a useful, stable pattern before changing its advice.

The latest action stays prominent beside the graphs.
03

Make one change and check again

Follow the listening suggestion, make a cautious adjustment and run another pass when needed.

Plus compares passes and keeps the evidence in History.

The live workspace

Everything you need during the check

This is the actual app. The RTA and spectrogram remain visible while the Coach gives one readable action and keeps recent stable guidance nearby.

Current Tonezio iPad workspace with Live, Record, graphs and Soundcheck Coach
iPad at the mixerLive/Record at the top, room level above the graphs and Soundcheck Coach directly below. Drag the divider to resize RTA and spectrogram.
Current Tonezio Soundcheck screen on iPhone
The same workflow on iPhoneLive/Record, room level, both graphs and the Coach in a scrollable native layout.
01

RTA frequency graph

Shows the current frequency balance from 20 Hz to 20 kHz. Choose 1 Oct, 1/3, 1/6, 1/12, 1/24 or 1/48 octave detail.

02

Spectrogram

Shows frequency content over time. Stronger frequencies become brighter, making sustained notes and changes easier to spot.

03

Response speed

Instant, Fast, Slow and Infinite averaging control how quickly the RTA moves. Slow is the default for a stable, readable curve.

04

Adjustable split view

RTA and spectrogram are visible together by default on iPad. Drag the divider to give either graph more room.

05

Estimated sound level

Shows the current level and maximum using the built-in microphone. It is useful for comparisons, not certified measurements.

06

English and Swedish

The app starts in English. Change language inside the app; the localization structure supports more languages later.

Soundcheck Coach

The important part is the next action

The Coach turns stable spectrum patterns into a short instruction you can read from the mixer. Tap it only when you want the longer explanation.

Current Tonezio Soundcheck Coach with a prominent action and recent guidance
1

Listens for a stable pattern

The Coach waits before changing its message, so short peaks do not constantly replace the current advice.

2

Shows one action in large text

You see what to check first without opening another view. The longer reasoning remains one tap away.

3

Builds a short live guidance list

Recent stable advice stays visible so you can move around the room without watching every change.

+

Plus records the complete guidance

Recorded passes keep Coach notes, possible-feedback events and exact times in History and PDF reports.

Tonezio Plus

From a quick check to a repeatable workflow

Free helps you understand the room right now. Plus is the one-time unlock for saving evidence, checking a change and bringing the result to the next rehearsal or gig.

Tonezio live RTA and spectrogram controls

What you get after purchase

Plus keeps the whole soundcheck, not only a number

  • Record a pass while the RTA, spectrogram and Coach remain visible
  • Log possible feedback with frequency and an EQ starting point
  • Record another pass and compare before and after
  • Open History, zoom the timeline and inspect exact times
  • Share a PDF with level graph, low/average/high and Coach events
  • Use the built-in debrief even without Apple Intelligence
Hz

Possible feedback with an EQ starting point

When a narrow frequency keeps building, Tonezio shows the exact frequency and a cautious starting suggestion for gain and Q. The event is stored with the recording.

Always confirm by ear before making a permanent EQ change.
REC

Record a complete soundcheck pass

Saves derived level samples, compact spectrum history, timestamps, Coach guidance, feedback evidence and your own markers. Microphone audio is never stored.

A/B

Record another pass and compare

Run the check again after moving a speaker or adjusting EQ. Tonezio compares the two passes so you can see whether the change helped.

HIST

Interactive History and debrief

Zoom and scroll the timeline, tap exact times, inspect saved Coach/feedback evidence and ask common questions with quick buttons.

The built-in debrief works on devices without Apple Intelligence.
PDF

Shareable report

Exports the level graph, low/average/high values, markers, possible-feedback frequencies and the complete Coach timeline.

DEMO

A demo soundcheck before purchase

Open a complete example to understand History, Coach notes, possible feedback and the debrief before recording your own session.

Exactly what is included

Free shows now. Plus saves and compares.

There is no subscription. The live analyzer and current Coach action are free; Plus is a permanent one-time purchase for the complete soundcheck workflow.

FunctionFreePlus
Live RTA and spectrogram
Estimated room level and maximum
Current Soundcheck Coach action
English and Swedish interface
Demo soundcheck in History
Possible-feedback alert with frequency, gain and Q
Recordings, Coach log and manual markers
Record another pass and A/B comparison
Interactive History, evidence and debrief
PDF reports and private iCloud continuity

Tonezio Plus is planned as one permanent in-app purchase. The exact localized price will be shown before purchase in the app and App Store.

WHAT IT SAVES

Measurements, not audio

When you choose to record, Tonezio stores derived level values, timestamps, Coach observations and markers locally or in your private iCloud Drive when available.

WHAT IT IS NOT

Not a certified sound-level meter

Built-in microphones differ between devices. Use Tonezio for practical soundchecks, comparisons and guidance—not regulated or calibrated measurements.

WHO IT IS FOR

People running sound without a measurement rig

Musicians, rehearsal rooms, volunteer technicians and smaller venues that want clearer information from the device already in their pocket.

Feedback

Report a bug or request a function

Messages from the website and app are sent to the Tonezio inbox. Include what you tapped, what happened and which device you used.

Sent securely through Tonezio’s feedback service.