OneFocus vs Snubline

OneFocus turns a focus plan into one clear session across iPhone, iPad, and Mac. Choose a Focus Profile, set a duration, and see whether each device is protected—without a vague all-green status hiding a problem. FOCUS YOUR WAY • Start 25, 50, or 90-minute sessions, or choose a custom duration. • Build Profiles for Deep Work, Study, Reading, and your own routines. • Block selected apps and websites on iPhone and iPad with Apple's Screen Time controls. • Use the free Mac companion to protect supported apps and websites. • Keep a session going with local rain, café, train, forest, wave, and other procedural sounds. ONE SESSION, HONEST STATUS Private iCloud sync carries your active session, Profiles, schedules, history, and verified Pro status between devices. OneFocus shows iPhone Protected, Mac Protected, Waiting, Needs Permission, or Offline separately, so you know what is actually happening. Existing local sessions and history remain useful offline. HISTORY THAT EXPLAINS YOUR TIME Review Today, 7 Days, Month, and All Time. See pause-aware totals, streaks, Profile distribution, a calendar heatmap, Focus Constellation, and per-device protection intervals. Session details preserve the Profile used at the time, even if you later rename it. APPLE WORKFLOWS Use App Shortcuts for quick 25 or 50-minute starts, open History, and coordinate OneFocus with an Apple Focus through a guided Shortcut. Core actions support VoiceOver, larger text, reduced motion, and keyboard navigation. FREE AND PRO The free version includes manual sessions, one custom Profile, four sounds, a daily goal, basic iPhone/Mac connection, Flexible mode, and recent history. A single US$9.99 Pro Lifetime purchase unlocks unlimited Profiles, repeating schedules, full history, all sounds, skies, and themes, Committed mode, advanced Shortcuts, and data export. Restore purchases at any time. PRIVATE BY DESIGN No OneFocus account. No ads. No third-party tracking. Browser content and Screen Time selections are not uploaded. Sync uses your private iCloud database, and sounds are generated locally. Terms of Use: https://oneapps.studio/terms

Explore rigging physics with an educational model. Snubline uses assumed inputs to illustrate equations and compare numerical values. It has no independent professional validation or complete rope calibration dataset. It is not a professional planning or load-safety assessment tool. Do not use its results to select equipment, determine actual loads, plan a cut, or decide whether an operation may proceed. Obtain qualified on-site assessment independently of the app. THE EDUCATIONAL MODEL - Compare snubbed and constant-slip let-run assumptions using a closed-form spring-mass equation. - Inspect peak tension, dynamic load factor, stretch, block force and device force, with equation details. - The rope conversion factor 0.075 and example moduli are provisional teaching values. - The 75%-125% display range is illustrative, not a validated error bound or confidence interval. Actual loads may fall outside it. - Fall factors above 2 are limited to 2, with a visible warning; the result no longer represents the full entered drop. NUMERICAL FORCE-VERSUS-RATING COMPARISONS Enter your own tag ratings and design factors. Within WLL, Approaching WLL, Exceeds WLL and Exceeds MBS describe numerical comparisons of model values only. They do not approve equipment or operations. EXAMPLES AND DOCUMENTS Estimate log weights from idealized geometry and species density, with estimate labels carried into comparisons. Save scenarios, gear records and jobs. Compare scenarios and share educational comparison PDFs or images. Existing frozen snapshots remain stored; documents rendered by this version carry the current educational restriction. TRANSPARENCY The free model page explains equations, provisional calibration, formula-test limitations and omitted effects including swing, tree flex, rope heating, friction variation and fatigue. Climbing, life support and crane operations are outside the model. YOUR DATA Records remain on your device. No account or cloud sync. If saved records cannot be opened, recording is paused and existing database and attachment files are kept. FREE Both model modes, equation details, the weight estimator, the model page, three Gear Locker items and one job. PRO Unlimited Gear Locker items and jobs, what-if comparisons, PDFs and share cards, custom rope profiles and widgets. Pro does not change model validity or calculation correctness. Choose a one-time Lifetime purchase or annual subscription. Existing monthly subscribers retain access while their Apple-verified entitlement is active. Any trial applies only when Apple confirms eligibility; the purchase screen shows the actual price and offer. Subscriptions renew unless cancelled in Apple subscription settings before renewal. Privacy Policy: https://app-legal-pages.vercel.app/snubline/privacy Terms of Service: https://app-legal-pages.vercel.app/snubline/terms