Coming soon for iPhone

Record the unusual.Compare what changed.

Record an unfamiliar rattle or jolt, keep the context and compare your next test with the last.

See how it works Follow the release

A record you can return to, with the moment and its context together.

Keep the context
Find the moment

An odd moment is hard to explain from memory.

“It made that noise again.”

Keep the sound and vibration from a recording session, with notes about what was happening.

“Was it better after the adjustment?”

Repeat the test with matching conditions, then review the difference together.

“Where in the recording did it happen?”

Jump from a detected candidate event to its surrounding timeline instead of searching the whole session.

From something unusual to something you can review.

Keep the context
Choose a scenario, note the object and its conditions, secure the phone and start recording before reproducing the issue.
Find the moment
Add a marker while recording. Later, inspect candidate events, surrounding sound and vibration, and your on-site notes.
Check the change
Repeat with the same setup. Compare the records and share a PDF or CSV when someone else needs the details.

Go back to the moment that matters.

A peak alone rarely tells the whole story. Inspect what happened before and after it, with sound, vibration and your own observations on one timeline.

Live vibration spectra and post-recording FFT analysis
Event candidates on a shared timeline
Your markers and notes stay with the record
Original audio replay when explicitly enabled

An adjustment deserves a fair comparison.

Start the next test from a saved record. Keep the placement and conditions consistent so a different setup does not look like a better result.

Carry the previous test conditions forward
Review two records side by side
Keep history organized by the object you tested

Give the next person more than “it felt different.”

Share a readable PDF with the record and its context, export CSV for further analysis, or keep a portable backup for another device.

PDF reports in five languages
CSV for your own analysis
Portable measurement backups

A separate workspace for vehicle acceleration.

Prepare the run, wait for readiness and review whether the result has enough evidence. Keep incomplete runs visible and pair a result with an external reference when needed.

Guided preparation and run validity
Incomplete runs keep their collected evidence
External-reference records and reports

For controlled, legal test environments. Phone-only timing is a reference, not certified timing; real-vehicle accuracy validation is still pending.

Your records stay with you.

No account is required for local recording and review. Saved measurements stay on the device until you choose to export or share them. Raw audio is saved only when you enable it.

Before you start

Does it tell me what is broken?

It helps document and investigate a change. Event candidates and comparisons are clues to review, not automatic fault diagnoses or equipment safety certification.

Will it capture an event that already happened?

No. Start a recording session before reproducing the issue. Keep the app in the foreground and the phone securely mounted.

Can I measure calibrated sound pressure?

Microphone levels are recorded as dBFS. Without an appropriate calibrated measurement chain, they are not environmental dB SPL values.

Which languages are supported?

The app, reports and this website support English, Simplified Chinese, Traditional Chinese, Japanese and Korean.

Can I download it now?

FieldTrace is preparing for its first App Store release. Pricing and availability have not been announced. Follow the release note for updates.