Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Frequencies Player is a precision tone generator for meditation, tuning, and sound exploration — from the makers of Quick Schumann Check.
$5.99
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Your first Build Kit is free with a verified email.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Frequencies Player is a precision tone generator for meditation, tuning, and sound exploration — from the makers of Quick Schumann Check. A tool, not a soundscape app. This isn’t looping rain, wind, ocean ambience, or bells — it’s labeled Schumann harmonics, Solfeggio, Nogier, Rife, and dozens more, playable and combinable on your terms. Pure sine-wave synthesis, timed playlists, optional binaural beats, and calm wave visuals — without the weight of a live-data monitoring app. WORKS FULLY OFFLINE No Wi‑Fi or cellular data required. Every tone is synthesized on your device, not streamed. Airplane mode, dead zones, or anywhere you want to disconnect — playback never depends on network calls. FREQUENCY LIBRARIES — 179 PRESETS • Schumann harmonics — Earth’s ~7.83 Hz reference with harmonic multipliers (×1, ×2, ×16, and more) • Solfeggio — 174, 396, 528, 639, 741, 852, 963 Hz and more • Nogier — biologically tuned bands (A–G) • Chakra — root through crown tones • Planetary — Hans Cousto cosmic octave tones • Angel — angel-number sequences • Rife — 93 wellness-associated tones with traditional focus labels • Custom Hz — 20 Hz to 20 kHz PLAYER · TOPICS · MORE • Player — categories, harmonics, chord voicing, playlists, frequency-synced wave decor • Topics — guides on choosing frequencies, offline playback, binaural beats, and Rife • More — appearance, 17 languages, reference reading (Wikipedia, CAFL, Royal Rife), privacy, support PLAYBACK & PLAYLISTS • Pure sine-wave synthesis with soft limiting, harmonic multipliers, and major-7th voicing • Adjustable app volume; optional binaural beats with fine tune, L/R swap, and band presets — use stereo headphones • Background audio when the screen locks • Timed playlists with saved slots, auto-advance, and audition mode — with repeat off, playback stops when your session ends VISUALS & LAYOUT Wave decor synced to each tone; light/dark themes or match your device. Landscape-friendly on iPhone; all categories on one screen on iPad. LANGUAGES UI in 17 languages: English, German, Spanish, Danish, French, Italian, Swedish, Polish, Chinese (Simplified), Japanese, Czech, Portuguese, Norwegian, Korean, Turkish, Russian, and Dutch. (Rife labels stay in English.) One-time purchase — no subscription, no in-app unlock, no ads. FROM THE SCHUMANN RESONANCE TEAM Want live Tomsk spectrograms, calendar history, GCP, Kp, and solar data? Try Quick Schumann Check on the App Store. WELLNESS NOTE For relaxation, meditation, and personal exploration — not a medical device. Rife and Nogier labels describe traditional associations, not clinical claims. Low Schumann harmonics may be inaudible on phone speakers; that is expected. Start at a comfortable volume with binaural beats. SUPPORT Questions or feedback: [email protected] Privacy: schumann-resonance.org/frequencies-player/privacy-policy/ Website: schumann-resonance.org/frequencies-player/
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
Not assessed in a Build Kit yet.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.