FreqCheck™
ISO/IEC 17025-CALIBRATED ANALYZER EVER BUILT FOR
iPhone, iPad, Mac (Designed for iPad), Apple Vision Pro (Designed for iPad).
Cryptographically Sealed Infrasound, Vibration & Tactical Wideband Telemetry
Every metrology lab in the world runs on the same premise: if you can't measure it, you can't prove it. FreqCheck puts that premise in your pocket. Point it at any sound, any vibration, any recording, any signal — and see, in real time, exactly what's really there. No lab technician. No rack of equipment. Just certified physics, running locally on the device you already own.
NOW SPEAKING A LANGUAGE THE iOS ECOSYSTEM HAS NEVER HEARD.
Roga Instruments didn't build a reputation. They built a standard — the kind other manufacturers get measured against. For twenty years, as the authorized distributor for TEAC Europe GmbH and TEAC Instruments (Japan), Roga's hardware has carried compliance marks that most acoustic equipment never earns: DIN IEC 61094-4 for working standard microphones, IEC 60942 Class 1 for acoustic calibration, WS2F certification for infrasonic front-vented sensors. Their software processes sound power data against ISO 3741, ISO 3744, ISO 3745, and ISO 7779 — the same protocols governing reverberation chambers, anechoic rooms, and certified industrial testing environments worldwide. Their impedance tubes meet both ISO and ASTM material standards.
That kind of record doesn't come from a company that rounds up. It comes from the same instruments passing the same demanding checks for two decades, without exception.
That rigor has always lived on a bench, in a rack, behind a Windows machine. Until now.
Until this test, there was no documented instance of an iPhone or iPad natively capturing, processing, and cryptographically sealing a clean 0.2 Hz signal.
Rogá drove sub-Hz telemetry directly through the iSV1611 into FreqCheck, on camera, with a function generator supplying a known, verifiable signal instead of an acoustic approximation.
The result is a mathematically indisputable demonstration that an iPhone can execute Class 1 metrology step-for-step against legacy bench systems — not an estimate of it, not a simulation of it, the same math, the same standard, the same result.
BEING THE FIRST FULLY DOCUMENTED INSTANCE OF THIS ON RECORD IS A DISTINCTION THAT SPEAKS FOR ITSELF.The video isn't the only record of this test. Every reading generated during the demonstration produced a sealed PDF report, timestamped and hashed the moment it was created.
That means the visual proof in the video and the underlying numerical proof in the report are two independent records of the same event, generated automatically, with no manual step in between where either could be altered.
Anyone reviewing this test isn't relying on a demonstration alone — they have the video and the certified data trail behind it, cross-referencing each other.
HAVING BOTH THE VIDEO AND THE SEALED REPORT ON RECORD IS WHAT TURNS A DEMONSTRATION INTO EVIDENCE.Macitynet, Southern Europe's leading iOS technology journal, independently covered FreqCheck's breakthrough metrology architecture. The feature validates how FreqCheck transforms consumer iOS devices into a decentralized, ISO 17025-compliant Class 1 laboratory instrument, eliminating legacy hardware dependencies for acoustic engineers.
Read the Complete Macitynet Technical Analysis →192 kHz CAPTURE: FIREARM & HEAVY ORDNANCE ACOUSTIC TESTING
LIVE ACTION — DPS DEMONSTRATION
UI ENGINE — DPS EVENT COUNTER
CRYPTOGRAPHICALLY SEALED DPS AUDIT REPORT
FreqCheck's DPS engine natively satisfies the strict field capture and mathematical requirements of:
- MIL-STD-1474E — Defense / Heavy Ordnance
- ASTM / MIL-SPEC — Firearm Suppressor Industry Standard
- ISO 10843 & ISO 1996 — Acoustics — Impulsive Noise & Blasting
- SAE J211 & ISO 12017 — Automotive Safety
- ANSI S12.19 — Measurement of Occupational Impulse Noise
FreqCheck democratizes high-SPL transient testing. By handling the complex math, automated event counting, and cryptographic protocol generation natively on an iPad or iPhone, FreqCheck eliminates the need for hired range crews, specialized acoustic engineers, and thousands of dollars in legacy bench equipment.
The cost of a single afternoon of range time using a hired testing crew often exceeds the price of a complete, permanent FreqCheck setup.
The same iSV1611 body that just proved itself down to 0.2 Hz of infrasound also functions as a digital charge amplifier for external accelerometers, connected through the Rogá K65 adapter.
One physical instrument now carries both an acoustic front end and a vibration front end, so switching between air and structure-borne measurement means changing an adapter, not changing your toolkit.
Field engineers no longer need to justify carrying, insuring, and maintaining two separate certified systems for two related disciplines.
CARRYING A SINGLE CLASS 1 INSTRUMENT THAT COVERS BOTH ACOUSTIC AND SEISMIC METROLOGY SIMPLIFIES EVERY FIELD DEPLOYMENT.THE LAB STANDARD ISN'T.
Directly inside Instrumentation Settings, three dedicated master toggles redefine the iOS audio pipeline:
- Pro Input Mode (PIM): Completely disables iOS automatic gain control and digital noise gating. Grants full manual command over hardware routing (Left Ch 1, Right Ch 2, or Auto), physical unit scaling (dB SPL, m/s², dBFS), and sensor sensitivities.
- Wideband Metrology (30 Hz – 96 kHz): Unlocks the full acoustic and ultrasonic spectrum. Bridges continuous environmental logging with extreme peak-hold impulse detection for suppressors, firearms, and explosive air blasts.
- Dynamic Pulse Sequence (DPS): Automates peak-hold event counting, calculates A-duration thresholds, and generates compliant audit protocols for impulsive noise environments.
Dual hardware presets let you switch instantly between sub-Hz infrasonic setups and 192 kHz high-SPL ballistic configurations without re-entering calibration factors.
At rest: true zero, no drift, no false signal. Tap LIVE, and edge-computed 32,768-point FFT mathematics lock the entire acoustic spectrum in real time — engineered equally for sustained industrial environments and microsecond ballistic transients.
THE GAP BETWEEN "I THINK I HEAR SOMETHING" AND "I CAN PROVE IT" IS ONE TAP.Unlike conventional analyzers that dump static, unreadable graphs, FreqCheck features an interactive crosshair scrubber designed for rigorous post-blast, tonal, and live ultrasonic interrogation across the active 30 Hz to 96 kHz wideband spectrum.
Live Session Control: When scanning live for mechanical friction, compressed air loss, or electrical anomalies from 20 kHz upward, the display moves fast. The crosshair scrubber gives you direct, fingertip control during active sessions — allowing you to immediately pause or glide onto a developing spike and read the exact frequency bin and amplitude peak instantly in the heads-up display.
Forensic Ghost-Trace: When a scan concludes, the peak ghost-trace remains frozen on-screen. Slide the scrubber along the envelope to isolate transient spikes, identify harmonic resonance, and verify peak hold thresholds with absolute precision.
DIRECT FINGERTIP CONTROL LETS YOU ISOLATE PROBLEMS IN REAL TIME AS THEY APPEAR ON SCREEN.Sample Rate, Locked to the Clock You Choose
PIM forces the iOS audio session to handshake with external hardware at strict, selectable clock rates — 44.1, 48.0, 96.0, or 192.0 kHz — while dynamic FFT bin resolution scales automatically. Whether measuring structural vibration in m/s² or peak sound pressure in dB SPL, calculations stay anchored to true NIST-traceable precision across any sensor array.
Manual Calibration, Entered by Hand
ADC voltage ceilings (10V / 16.6V), sensor sensitivity coefficients (e.g., 50.00 mV/Pa or mV/g), and acoustic offsets are entered directly. The live Metrology Configuration Snapshot verifies your exact signal path on screen, scaling field measurements to laboratory bench equipment down to the sub-Hz decimal.
YOUR FIELD DATA AND YOUR BENCH DATA ARE FINALLY THE SAME DATA.
Pro Input Mode is built to work with standard 1", 1/2", and 1/4" measurement microphones and accelerometers — the exact physical dimensions external accredited calibration bodies require before they'll issue a certificate against any instrument. Matching that established form factor means the hardware feeding FreqCheck isn't a proprietary workaround — it's the same physical standard every accredited lab sensor in the world is already built to.
BUILDING ON A PHYSICAL STANDARD THE ENTIRE ACCREDITATION INDUSTRY ALREADY RECOGNIZES IS WHAT KEEPS YOUR METROLOGY INVESTMENT FULLY DEFENSIBLE.FreqCheck is engineered to be a hardware-agnostic metrology bridge. While ROGA Instruments hardware establishes an accredited benchmark, Pro Input Mode (PIM) natively handshakes with class-compliant USB audio interfaces, external DAQs, or third-party ADCs.
Whether deploying an all-in-one USB microphone or routing an industrial multi-channel DAQ via USB-C into an iPad, the IND CORE™ engine processes acoustic and vibration telemetry with identical mathematical rigor.
DEPLOYING FREQCHECK ALONGSIDE YOUR EXISTING INSTRUMENTATION IS THE SMARTEST WAY TO UPGRADE YOUR METROLOGY WORKFLOW. Explore compatible instruments & pairing → Hardware & Pairing
Traditional acoustic workflows end in an exported CSV file — a format any downstream user can open and silently alter without leaving a trace. Every FreqCheck PDF is stamped with the exact metrology configuration (sample rate, ADC ceiling, sensitivity) and sealed with a SHA-256 hash. Because this prevents post-test tampering, FreqCheck is a fully qualified, ready-to-deploy data source for any enterprise Laboratory Information Management System (LIMS) or defense audit log. Field engineers capture the event, generate the sealed PDF, and ingest it directly with uncompromised metrological traceability.
FEEDING A LIMS WITH DATA THAT IS SEALED AT THE MOMENT OF CAPTURE GIVES EVERY ENTERPRISE AUDIT AN UNSHAKABLE FOUNDATION.Enterprise Seats
For defense contractors, testing laboratories, and large-scale manufacturing operations, FreqCheck can be deployed at scale directly to managed fleet devices via the Apple Business Manager (ABM) program. Manage your metrology licenses centrally, push updates seamlessly, and outfit your entire field engineering team with a standardized, secure testing platform.
Bespoke Engineering
Abundance Sea, LLC provides dedicated custom engineering pathways for enterprise clients operating under mutual NDA. If your organization requires proprietary acoustic profiling, bespoke mathematical models, or custom user interface workflows, our engine can be adapted to your exact specifications. These customized updates are delivered privately and securely directly to your organization via ABM, ensuring your proprietary testing methodologies never enter the public App Store.
To initiate an Enterprise deployment or request a Custom Engineering consultation:
Please use the Contact form and submit your official Organization Name and Apple Business Manager Organization ID so we can add your entity to our distribution profile.
Nyquist is also equipped to guide you through this procurement process directly.
Contact Enterprise SalesFreqCheck runs the identical IND CORE™ analysis on a file already sitting on your device — a prior field recording, an archived legacy capture, audio pulled from existing case files — exactly as it does on a live signal coming through an external sensor.
That means the precision demonstrated live across these tests applies retroactively to recordings your organization already has sitting in storage, untouched for years.
Evidence you assumed was locked in an old file format, on an old drive, in an old case folder, can be re-opened and re-certified without a single new recording session.
TURNING EXISTING RECORDINGS INTO NEWLY CERTIFIED EVIDENCE IS WHERE THIS BECOMES GENUINELY TRANSFORMATIVE. Learn more about supported formats & test files → Data ImportingIndividual readings can be contributed to a cryptographically verified map of global signal data — turning a single measurement into part of an independently verifiable dataset that reinforces the credibility of your results.
Nyquist is built into FreqCheck to assist across every stage of operation — not just troubleshooting. Inquire before, during, and after every session.
- Instant assistance: Tier 1 & 2 guidance for calibration, setup, and metrological bounds.
- Acoustic intelligence: From basic signal mechanics to accredited Class 1 standards.
- Contextual navigation: Nyquist directs you to verified community datasets and research threads.
- Subscriber access: Advanced metrology guidance and custom sensor profiling tools.
A permanent, structured environment engineered for acoustic engineers and field specialists.
- Permanent knowledge base: Organized, searchable documentation that remains accessible indefinitely.
- Specialized publishing: Members can share verified traces, audit files, and test benchmarks.
- Nyquist indexing: Inquiries automatically link to relevant community solutions and case logs.
- Collaborative research: Built for technical contributors and metrology practitioners.
Establish The Standard.