Rattlewise turns your iPhone into a buzz & rattle source-finder for cars, EVs, vans, and homes. Sweep a tone to make it resonate, watch it lock onto a live spectrum, then get a ranked “tighten here” checklist — 100% on-device, no account, no cloud.
Download on the App StoreUse it parked — never while driving.
For EV owners, van-lifers, and DIY mechanics who can hear a buzz but can’t find it.
Sweep a tone to make loose trim, panels, and clips resonate, then watch the rattle appear as a peak on a live FFT spectrum — the app locks onto its exact frequency.
The part rivals leave out: a ranked, plain-English list of likely culprits with a guided checklist — press here, tighten here, add felt tape, reseat the clip.
Re-measure and export a shareable before/after report with the quantified drop — “peak −14 dB at 280 Hz.” Settle it with a spouse, forum, or mechanic.
Three steps. From a buzz you can’t locate to proof it’s fixed.
Play a frequency sweep that makes the rattle resonate. The buzz shows up as a peak on a live spectrum, and the app tracks its exact frequency — even for intermittent rattles.
Get a ranked list of likely culprits with a confidence level for each, plus a guided checklist: press here, tighten here, reseat the clip. Press your phone to a panel to confirm.
Measure again and get a before/after report with the quantified drop. Share it as a PDF or image, and log every fix per car, van, or room.
The full resonance trick is free. Upgrade when you want the diagnosis and the proof.
Find any rattle, get a ranked fix, and prove it’s gone — all on your iPhone. No account, no cloud, no ads.
Download on the App Store