What's New in Version 3.0.3 iPad Log Fix & UI Refinements Resolves an issue preventing PDF log exports on iPad. Take full advantage of the larger canvas with a desktop-class Tactical Dashboard, giving your real-time FFT spectrum, multi-shot DPS sequences, and high-contrast SPL readouts the expansive visual real estate they deserve for true lab-bench analysis in the field. Raw 384.0 kHz Hardware Integration & 65k-Point FFT Building upon Tactical Wideband Metrology, FreqCheck now unlocks up to raw 384.0 kHz hardware sampling to support extreme 192.0 kHz high-frequency acoustic auditing. Powered by a new dynamic 65,536-point FFT architecture, the engine automatically scales up to deliver enterprise-grade spectral resolution at maximum hardware clock speeds. Complete with a massive digital meter displaying live Sound Pressure Level (SPL) and precise Peak Hold captures, this update transforms your iOS device into an industrial-grade spectrum analyzer with unprecedented metrology horsepower. Dynamic Pulse Sequence (DPS) & MIL-STD-1474E Blast Averaging Dynamic Pulse Sequence (DPS) introduces rigorous MIL-STD-1474E compliant metrology to calculate true energetic logarithmic averages across multi-round blast series and impulsive acoustic events. Because decibels are logarithmic representations of physical sound pressure, traditional arithmetic means severely underestimate the true physical energy delivered to human ears or blast gauges. DPS converts each discrete peak back into linear acoustic mean-square pressure, averages the physical energy, and computes the correct equivalent energy mean level (Lavg). Configurable pulse counts (3 to 10 events), adjustable threshold sensitivity gates (e.g., >130 dB floor to filter out ambient range chatter or noise), and customizable anti-echo lockout windows (0.5s, 1.5s, or 3.0s to eliminate secondary ground and berm reflections) ensure flawless field automation. Whether testing heavy ordnance, firearm suppressors, or industrial drop hammers, every multi-round session automatically aggregates into a unified sequence report featuring absolute peak levels (Lpk, max), energetic averages (Lavg), a detailed per-shot breakdown table, and a combined SHA-256 cryptographic sequence hash for tamper-evident proof. Pro Input Mode (PIM) Bridging & Hardware DC Block Integrated with Pro Input Mode (PIM), the system incorporates dedicated input channel selection (Left, Right, Auto), combined with manual overrides for ADC voltage ceilings, sensor sensitivity (mV/Pa), and dual hardware preset slots. This completely bypasses standard mobile audio filters and auto-gain compression, bridging your device directly to professional DC-coupled DAQ hardware and external instrumentation microphones. Crucially, this update adds a switchable Hardware DC Block. This filter dynamically eliminates false electrical offsets from external hardware before the data hits the FFT—instantly zeroing inflated baseline SPL readings while strictly preserving the engine's 0.2 Hz infrasound metrology. Your infrasound detector and acoustic toolkit scale seamlessly to your exact technical requirements, delivering pristine, unadulterated telemetry you can trust. Taking absolute control over your input variables guarantees your field readings match the accuracy of expensive lab bench equipment. Forensic-Grade Cryptographic Proof Every session concludes with an ISO 17025-calibrated, NIST-traceable PDF audit report secured by real-time SHA-256 cryptographic frame sealing. The architecture ensures that any attempt to alter the captured frequency analysis breaks the digital seal, guaranteeing the absolute integrity of your data. You walk away with fully certified, evidentiary-weight documentation that commands immediate authority in any investigative, industrial, defense, or scientific setting. Presenting lab-grade, cryptographically sealed proof provides total confidence and professional peace of mind.

What’s New in Version 3.0.2 **Raw 384.0 kHz Hardware Integration & 65k-Point FFT** Building upon Tactical Wideband Metrology, FreqCheck now unlocks up to raw 384.0 kHz hardware sampling to support extreme 192.0 kHz high-frequency acoustic auditing. Powered by a new dynamic 65,536-point FFT architecture, the engine automatically scales up to deliver enterprise-grade spectral resolution at maximum hardware clock speeds. Complete with a massive digital meter displaying live Sound Pressure Level (SPL) and precise Peak Hold captures, this update transforms your iOS device into an industrial-grade spectrum analyzer with unprecedented metrology horsepower. **iPadOS UI Refinements** FreqCheck has been newly refined and optimized for the iPad. Take full advantage of the larger canvas with a desktop-class Tactical Dashboard, giving your real-time FFT spectrum, multi-shot DPS sequences, and high-contrast SPL readouts the expansive visual real estate they deserve for true lab-bench analysis in the field. **Dynamic Pulse Sequence (DPS) & MIL-STD-1474E Blast Averaging** Dynamic Pulse Sequence (DPS) introduces rigorous MIL-STD-1474E compliant metrology to calculate true energetic logarithmic averages across multi-round blast series and impulsive acoustic events. Because decibels are logarithmic representations of physical sound pressure, traditional arithmetic means severely underestimate the true physical energy delivered to human ears or blast gauges. DPS converts each discrete peak back into linear acoustic mean-square pressure, averages the physical energy, and computes the correct equivalent energy mean level (Lavg). Configurable pulse counts (3 to 10 events), adjustable threshold sensitivity gates (e.g., >130 dB floor to filter out ambient range chatter or noise), and customizable anti-echo lockout windows (0.5s, 1.5s, or 3.0s to eliminate secondary ground and berm reflections) ensure flawless field automation. Whether testing heavy ordnance, firearm suppressors, or industrial drop hammers, every multi-round session automatically aggregates into a unified sequence report featuring absolute peak levels (Lpk, max), energetic averages (Lavg), a detailed per-shot breakdown table, and a combined SHA-256 cryptographic sequence hash for tamper-evident proof. **Pro Input Mode (PIM) Bridging & Hardware DC Block** Integrated with Pro Input Mode (PIM), the system incorporates dedicated input channel selection (Left, Right, Auto), combined with manual overrides for ADC voltage ceilings, sensor sensitivity (mV/Pa), and dual hardware preset slots. This completely bypasses standard mobile audio filters and auto-gain compression, bridging your device directly to professional DC-coupled DAQ hardware and external instrumentation microphones. Crucially, this update adds a switchable Hardware DC Block. This filter dynamically eliminates false electrical offsets from external hardware before the data hits the FFT—instantly zeroing inflated baseline SPL readings while strictly preserving the engine's 0.2 Hz infrasound metrology. Your infrasound detector and acoustic toolkit scale seamlessly to your exact technical requirements, delivering pristine, unadulterated telemetry you can trust. Taking absolute control over your input variables guarantees your field readings match the accuracy of expensive lab bench equipment. **Forensic-Grade Cryptographic Proof** Every session concludes with an ISO 17025-calibrated, NIST-traceable PDF audit report secured by real-time SHA-256 cryptographic frame sealing. The architecture ensures that any attempt to alter the captured frequency analysis breaks the digital seal, guaranteeing the absolute integrity of your data. You walk away with fully certified, evidentiary-weight documentation that commands immediate authority in any investigative, industrial, defense, or scientific setting. Presenting lab-grade, cryptographically sealed proof provides total confidence and professional peace of mind.

What’s New in this Version Version 2.1.2: Dynamic Pulse Sequence (DPS) & MIL-STD-1474E Blast Averaging Dynamic Pulse Sequence (DPS) introduces rigorous MIL-STD-1474E compliant metrology to calculate true energetic logarithmic averages across multi-round blast series and impulsive acoustic events. Because decibels are logarithmic representations of physical sound pressure, traditional arithmetic means severely underestimate the true physical energy delivered to human ears or blast gauges. DPS converts each discrete peak back into linear acoustic mean-square pressure, averages the physical energy, and computes the correct equivalent energy mean level (Lavg). Configurable pulse counts (3 to 10 events), adjustable threshold sensitivity gates (e.g., >130 dB floor to filter out ambient range chatter or noise), and customizable anti-echo lockout windows (0.5s, 1.5s, or 3.0s to eliminate secondary ground and berm reflections) ensure flawless field automation. Whether testing heavy ordnance, firearm suppressors, or industrial drop hammers, every multi-round session automatically aggregates into a unified sequence report featuring absolute peak levels (Lpk, max), energetic averages (Lavg), a detailed per-shot breakdown table, and a combined SHA-256 cryptographic sequence hash for tamper-evident proof. Building upon Tactical Wideband Metrology, FreqCheck delivers 192 kHz sampling to support up to 96 kHz high-frequency acoustic auditing, complete with a massive digital meter displaying live Sound Pressure Level (SPL) and precise Peak Hold captures. This transforms your iOS device into an industrial-grade FFT spectrum analyzer capable of measuring extreme ballistic acoustic events and high-speed transients. You gain the unprecedented power to validate covert signals or high-frequency anomalies instantly in the field, turning raw data into undeniable proof. Having this caliber of WideBand metrology in your pocket ensures you are always prepared for the unexpected. Integrated with Pro Input Mode (PIM), the system incorporates dedicated input channel selection (Left, Right, Auto), combined with manual overrides for ADC voltage ceilings, sensor sensitivity (mV/Pa), and dual hardware preset slots. This completely bypasses standard mobile audio filters and auto-gain compression, bridging your device directly to professional DC-coupled DAQ hardware and external instrumentation microphones. Your infrasound detector and acoustic toolkit scale seamlessly to your exact technical requirements, delivering pristine, unadulterated telemetry you can trust. Taking absolute control over your input variables guarantees your field readings match the accuracy of expensive lab bench equipment. Every session concludes with an ISO 17025-calibrated, NIST-traceable PDF audit report secured by real-time SHA-256 cryptographic frame sealing. The architecture ensures that any attempt to alter the captured frequency analysis breaks the digital seal, guaranteeing the absolute integrity of your data. You walk away with fully certified, evidentiary-weight documentation that commands immediate authority in any investigative, industrial, defense, or scientific setting. Presenting lab-grade, cryptographically sealed proof provides total confidence and professional peace of mind.

Version 2.1.1: Tactical Wideband Metrology Tactical Wideband Metrology introduces 192 kHz sampling to support up to 96 kHz high-frequency acoustic auditing, complete with a massive digital meter displaying live Sound Pressure Level SPL and precise Peak Hold captures. This transforms your iOS device into an industrial-grade FFT spectrum analyzer capable of measuring extreme ballistic acoustic events and high-speed transients. You gain the unprecedented power to validate covert signals or high-frequency anomalies instantly in the field, turning raw data into undeniable proof. Having this caliber of WideBand metrology in your pocket ensures you are always prepared for the unexpected. Building on the recently introduced Pro Input Mode (PIM), the system now incorporates dedicated input channel selection (Left, Right, Auto), combined with manual overrides for ADC voltage ceilings, sensor sensitivity (mV/Pa), and dual hardware preset slots. This completely bypasses standard mobile audio filters and auto-gain compression, bridging your device directly to professional DC-coupled DAQ hardware and external instrumentation microphones. Your infrasound detector and acoustic toolkit scale seamlessly to your exact technical requirements, delivering pristine, unadulterated telemetry you can trust. Taking absolute control over your input variables guarantees your field readings match the accuracy of expensive lab bench equipment. Every session concludes with an ISO 17025-calibrated, NIST-traceable PDF audit report secured by real-time SHA-256 cryptographic frame sealing. The architecture ensures that any attempt to alter the captured frequency analysis breaks the digital seal, guaranteeing the absolute integrity of your data. You walk away with fully certified, evidentiary-weight documentation that commands immediate authority in any investigative, industrial, or scientific setting. Presenting lab-grade, cryptographically sealed proof provides total confidence and professional peace of mind.

Version 2.0.2: Advanced PIM Workflow Control Built-in dual preset slot memory within Pro Input Mode (PIM) allows you to save custom configurations for your most frequently used measurement hardware and sensors. You can instantly recall saved sample rates, voltage ceilings, and sensitivity coefficients with a single tap instead of re-entering variables manually in the field. This completely eliminates setup friction, letting you deploy your lab configuration and capture certified data instantly. Streamlined workflows ensure maximum efficiency during every acoustic audit.

Version 2.0.1: The Class 1 Mobile Lab App Upgrade This update includes performance improvements for Pro Input Mode (PIM), and stability enhancements to keep your live telemetry running smoothly.

Version 2.0.0: The Class 1 Mobile Lab Upgrade FreqCheck 2.0.0 transforms your device from a diagnostic scanner into a dedicated, enterprise-grade metrology instrument. This architectural upgrade introduces true hardware bridging and laboratory-grade controls, establishing FreqCheck as the first and only Class 1 Mobile Lab App. PRO INPUT MODE (PIM) Raw Data Capture PIM bypasses standard mobile audio filters, automatic gain control, and heuristic smoothing entirely. Nothing touches your signal between the sensor and the engine. What reaches IND CORE™ is unadulterated, linear data — exactly what pure metrology demands. Direct Hardware Bridging Native support for professional external DAQ hardware and class-compliant USB interfaces via direct, DC-coupled line-in inputs. Zero attenuation means zero compromise. Your lab-grade sensors finally speak directly to your phone. Manual Calibration Overrides Enter your exact ADC voltage ceilings, sensor sensitivity coefficients, and hardware offsets by hand. This scales your mobile readings to match laboratory bench equipment precisely. Your field data and your bench data are now the same data — down to the sub-Hz decimal. Dynamic Sample Rate Locking Force the iOS audio session to handshake with external hardware at strict rates — 44.1 kHz, 48.0 kHz, 96.0 kHz , 192 kHz— while FFT bin resolution scales automatically to match your selected clock. Every calculation stays locked to true NIST-traceable precision. The math never drifts, no matter what hardware you connect. UNBREAKABLE AUDIT TRAILS Metrology Configuration Snapshot Your exact hardware parameters are now captured on a read-only dashboard block and permanently stamped onto every PDF export. Nothing about your setup is hidden or reconstructed after the fact. Your audit trail defends itself. Cryptographic Sealing Every PDF Audit Report is sealed with a unique SHA-256 hash anchored to your specific device and session telemetry. Tamper with the data, and the seal breaks instantly. Your reports now carry undeniable evidentiary weight. OFFLINE MEDIA ENGINE ALIGNMENT Symmetrical Processing The offline media engine has been rebuilt to mirror the live PIM pipeline exactly. Imported lossless audio and video files are now processed with full amplitude integrity and dynamic sample rate decoding. Whether you're capturing live or auditing a file, the math is identical — your forensic conclusions hold up either way.

The Decentralized Laboratory FreqCheck has already established a new baseline for edge-computing metrology. With this update, we are completely liberating the acoustic laboratory. You no longer need to be tethered to cumbersome rack-mounted analyzers, tangled interfaces, or archaic desktop software to process high-resolution offline telemetry. These latest architectural upgrades reinforce the IND CORE™ as the undisputed standard for infrasonic analysis, making legacy workflows entirely obsolete. Professional File Ingestion: Process uncompressed and lossless .wav, .flac, .alac, .aiff, .m4a, and .mp3 files directly from your device or iCloud Drive. Extreme High-Fidelity Support: The engine now effortlessly handles massive audiophile files up to 24-bit / 384 kHz without processor bottlenecking or thermal throttling. Automated Standardization: All imported media is dynamically aligned to the 44.1 kHz laboratory standard prior to analysis. This ensures absolute mathematical consistency in FFT bin widths and sub-Hz measurements, completely eliminating the scaling drift commonly found in legacy software. Enterprise-Grade Metrology: Delivering the exact 32,768-point FFT mathematical rigor of traditional hardware, FreqCheck bypasses easily manipulated raw data outputs. Every live measurement and file import is instantly secured with an ISO 17025-aligned, SHA-256 cryptographically sealed PDF report.

FreqCheck™ v1.1.3 Release Notes Standardized 48kHz Precision: Optimized the core processing engine to a native 48kHz standard, ensuring consistent, NIST-traceable results for all professional frequency audits. Enhanced Configuration Guidance: Added input requirements in Settings to ensure external hardware is locked to the 48kHz reference for professional-grade measurement accuracy.

Professional-Grade Signal Integration Ultra-High-Resolution Input Support: Added direct support for processing laboratory-grade signals up to 384,000 Hz (384 kHz). Performance & Stability Hardware Interface Optimization: Enhanced audio-graph stability and auto-detection when hot-plugging advanced external USB-C audio interfaces and specialized line-in sensors. Minor bugs and fixes applied.

System interfaces and all exported ISO 17025-aligned PDF Audit Reports have been updated to officially reflect the issued U.S. Patent No. 12,659,418 and active continuation portfolio (19/660,467).

This updates the IND Core™ Forensic Integrity Sealing architecture, upgrading the structural integrity of all exported data. Cryptographic Sealing: All real-time spectral telemetry mathematically locked using SHA-256 hashing at the millisecond of capture. Hardware Anchoring: PDF Audit Reports utilize true cryptographic device-hashing, permanently binding exported data to the physical hardware that recorded it. Immutable PDF Exports: Exported reports feature a digitally signed Master Seal in the footer, verifying the absolute forensic integrity of your acoustic measurements. Engine Optimization: Minor performance enhancements to the rolling high-resolution memory buffer.

Enhanced user privacy and streamlined the initial launch experience to get you scanning faster

Minor system refinements and performance optimizations. Enjoy seeing what you are hearing with FreqCheck™

Minor system refinements and performance optimizations. Enjoy seeing what you are hearing with FreqCheck™

Minor text corrections updated in IND CORE™ PDF Export Reports Documentation

Minor bug fix: Updated AdMob UI tracking IDs and adjusted display names.