FreqCheck™

Acoustic and vibration metrology has always come with a leash: proprietary software tied to a specific workstation, a specific license, a specific room. FreqCheck cuts that leash. Physical transducers, external DAQs, and exported system logs all connect directly into the same 32,768-point FFT engine — with no vendor-tethered desktop standing in between.

That means the instrument doesn't just travel with the engineer anymore — it stops requiring a fixed location at all.

1. True Plug-and-Play DAQ & Sensor Integration

Every transducer and external DAQ listed in this matrix can reach FreqCheck two ways: through an exported file, or live, through a direct DC-coupled line-in connection governed by Pro Input Mode.

FreqCheck bridges external hardware directly to iOS through standard USB-C, Lightning-to-USB Camera Adapters, or 3.5mm TRRS inputs. These native ports function as universal data gateways, allowing you to plug in a measurement microphone or bridge analog BNC sensors through ICP-to-USB signal conditioners and external DAQs.

When a supported instrument is connected live, Pro Input Mode locks the sample rate to match your hardware's clock — 44.1, 48.0, 96.0, or 192.0 kHz — and hands you direct manual control over ADC voltage ceiling, sensor sensitivity, and acoustic offset. Activating PIM bypasses internal iOS noise-cancellation filters and standard automatic gain control, securing a true DC-coupled line-in pathway that captures unattenuated raw voltage and extreme low-frequency seismic telemetry natively on the device.

That means the same phone in your pocket steps directly into a role normally reserved for dedicated laboratory signal conditioners, eliminating the need to install drivers, configure interface software, or negotiate proprietary handshakes to get your data.

*Note: While file imports are automatically standardized to 44.1 kHz, live hardware capture natively requires a 48.0 kHz or 44.1 kHz source sample rate to bypass internal iOS resampling and preserve NIST-traceable accuracy.*

*Compatibility listed below reflects qualified hardware known to interface correctly via standard iOS input pathways. This list is illustrative and not exhaustive, is subject to change without notice, and does not constitute a partnership, endorsement, or certification by the named manufacturers. FreqCheck is not responsible for third-party hardware availability, firmware changes, or discontinued products.*

Preferred Hardware Partner: RogaDAQ2, RogaDAQ16, and RogaDAQ 384 data acquisition systems, alongside the iSV1611 series Plug & Play USB-C measurement microphones. RogaDAQ hardware connects the moment it's plugged in, with precision intact from the first sample.

2. Legacy Software Exports & File Processing

FreqCheck reads directly from historical acoustic archives, dormant NVH libraries, and legacy system logs — no new measurement required, no proprietary desktop license standing in the way. Import a .wav or .flac export from virtually any industrial system below, run high-resolution post-process FFT analysis, apply a NIST-traceable cryptographic seal, and generate an ISO 17025-aligned report — all from an iPhone or iPad.

That means years of data that were technically "yours" but practically locked behind a specific software seat license are now fully usable again, on the device already in your pocket.

*Compatibility listed below reflects supported file export formats from the named platforms and is provided for reference. This list is illustrative and not exhaustive, is subject to change without notice, and does not constitute a partnership, endorsement, or certification by the named manufacturers. FreqCheck is not responsible for third-party software updates, discontinued formats, or hardware availability.*

Whether the source is a decade-old export sitting in a legacy archive or a live signal running through a six-figure DAQ array right now, FreqCheck meets it at the same certified standard, on the same device.