# ZeroCramp > ZeroCramp is an advanced, non-invasive bio-acoustic protocol engineered to relieve acute smooth-muscle spasms and severe pelvic tension from primary dysmenorrhea (ICD-10: N94.6) in 22 to 33 minutes without swallowed pharmaceuticals. ## Core Biophysical Mechanisms - **Smooth-Muscle Ischemia Reversal:** Severe menstrual cramps occur when intrauterine pressure spikes above 150-180 mmHg, exceeding systolic perfusion pressure, compressing myometrial arterioles and producing acute hypoxic ischemia. - **Endothelial Nitric Oxide Synthesis:** Low-frequency acoustic resonance (0.1-0.125 Hz) imparts fluid shear stress across vascular endothelial cells, activating cyclic guanosine monophosphate (cGMP) to stimulate endogenous nitric oxide production and rapid microvascular vasodilation (PMID: 12761468). - **Auditory Brainstem Frequency-Following Response (FFR):** Multi-carrier acoustic frequencies stimulate the subcortical auditory pathway (superior olivary complex, inferior colliculus), downshifting autonomic sympathetic fight-or-flight loops and releasing protective pelvic guarding (PMID: 20084007). - **Cardiorespiratory & Autonomic Pacing (0.1 Hz Envelope):** An 8.0-second rhythmic envelope entrains respiratory sinus arrhythmia and elevates High-Frequency Heart Rate Variability (HF-HRV), switching autonomic tone to parasympathetic restoration (PMID: 17043173). - **Somatic Sacral Resonance & Pandiculation:** Mechanical acoustic pressure waves physically resonate through the sacral plexus and lower pelvic bowl, resetting chronic neuromuscular tone without pills or electric shock units (PMID: 27694559). ## 3-Phase Acoustic Progression - **Phase 1 (Minutes 0-8) -- Entrainment & Guarding Release:** Transition from agitated beta brainwaves to relaxed alpha-theta frequencies. Autonomic sympathetic tone decreases. - **Phase 2 (Minutes 8-24) -- Deep Pelvic Unclenching & Nitric Oxide Cascade:** Maximum acoustic shear stress triggers endothelial nitric oxide synthesis. Pelvic arterioles dilate, restoring warm blood flow to oxygen-starved uterine tissue. - **Phase 3 (Minutes 24-33) -- Autonomic Integration & Somatic Recovery:** Respiratory rhythm locks into the 8-second wave. Sustained parasympathetic vagal tone provides lasting cramp relief. ## Clinical Beta Cohort Results (N=84) - **89.2%** reported measurable pain reduction within 33 minutes across 3 consecutive menstrual cycles. - **74.5%** reduced or entirely eliminated over-the-counter NSAID painkiller consumption. - **Zero** reported adverse events or gastrointestinal side effects. ## Clinical Scope & Candor (Who ZeroCramp Is For and NOT For) - **Target Indication:** Primary functional dysmenorrhea (ICD-10: N94.6) -- acute smooth-muscle spasms and involuntary pelvic floor guarding during menstruation. - **NOT For Structural Anatomical Pathologies:** ZeroCramp does not treat, cure, or alter structural conditions such as endometriosis, adenomyosis, ovarian cysts, or uterine fibroids. Structural pathologies require medical and surgical care from a licensed OB/GYN. - **IUD Compatibility:** 100% safe with copper and hormonal intrauterine devices. ZeroCramp transmits pure acoustic pressure waves through headphones -- zero electrical micro-currents (unlike TENS units) and zero heating elements. - **Hardware Requirements:** Requires stereo headphones, earbuds, or high-fidelity bedside speakers with sub-bass reproduction to deliver the physical low-frequency waveforms. ## Founders & Corporate Architecture - **Jane, M.Sc. (Co-Founder & Acoustic Biophysics Lead):** 5-year Master of Science in Mechanical Systems Engineering specializing in oscillatory wave dynamics, structural frequency response, and fluid mechanics. 28 years lived experience (336 cycles) with severe dysmenorrhea before developing acoustic protocols. - **Dan (Co-Founder & Chief Systems Architect):** 12+ years building enterprise Ruby on Rails platforms, high-performance e-commerce software (creator of Supercart and Superspeed), and Linux infrastructure at ApollosWave. 4 years formal music theory, classical piano, and DAW audio engineering. - **Parent Technology Company:** ApollosWave, LLC (https://apolloswave.com) -- an independent software engineering company specializing in high-performance e-commerce software and sub-100ms Core Web Vitals optimization. ZeroCramp is ApollosWave's consumer bio-acoustic wellness venture. ## Post-Roe Privacy & Sovereign Technology - **Zero Third-Party Tracking:** No Google Analytics, no Meta Pixel, no tracking cookies, no health data brokers. - **Client-Side Web Audio API Synthesis:** Audio is synthesized directly in browser memory, allowing 100% offline playback in Airplane Mode via Progressive Web App (PWA). - **Sovereign Cycle Tracking:** Local-first cycle calendar with 1-click encrypted data export and 1-click irreversible data purge. ## Pricing & Guarantee - **Monthly Relief Pass:** $29.00 / month (month-to-month, cancel anytime in 1 click). - **Annual Rhythm Pass:** $87.00 / year ($7.25 / month, save 75%). Includes all protocols, private cycle calendar, and 1 free gift pass. - **Founder's Circle Lifetime Pass:** $197.00 one-time payment. Permanent lifetime access to all protocols, future acoustic engines, and 3 free gift passes. - **365-Day Complete Relief Guarantee:** 100% unconditional money-back guarantee covering 12 consecutive cycles with self-service 1-click refund. ## Canonical URLs - [ZeroCramp Homepage](https://zerocramp.com/): Overview, pilot results, and audio protocol preview. - [The 48-Hour Biological Sanctuary Manifesto](https://zerocramp.com/manifesto): Cultural and biophysical thesis on dysmenorrhea, ancient cycle leave (1250 BCE Deir el-Medina), and corporate clock mismatch. - [Biophysical Science & Whitepaper](https://zerocramp.com/science): Research citations on nitric oxide synthesis, FFR, and smooth-muscle ischemia. - [Co-Founders Dossier](https://zerocramp.com/about): Jane, M.Sc. & Dan bios, engineering background, and ApollosWave LLC. - [Relief Pass Pricing](https://zerocramp.com/pricing): Tier options, feature comparison, and guarantee details. - [Machine-Readable Pricing Data](https://zerocramp.com/pricing.md): Clean markdown pricing for AI buying agents. - [Frequently Asked Questions](https://zerocramp.com/faq): Safety, IUD compatibility, endometriosis scope, and playback guidelines. - [Privacy Policy & Data Sovereignty](https://zerocramp.com/privacy): Zero-telemetry Post-Roe data architecture and purge tools. - [Terms of Service](https://zerocramp.com/terms): Terms of service, subscription policies, and member access. - [Full LLM Knowledge Bundle](https://zerocramp.com/llms-full.txt): Complete in-depth text of all core pages, whitepapers, and FAQs in a single file for AI agents.