Spirit Level Plus vs SleepWindow

Spirit Level is optimized for iPhone 13 and iPhone 13 Pro! Also check out iMetalBox: 7 in 1, get 6 more tools with the price of one! You can use Spirit Level for: - Carpentry works - Measure angles and slopes - Home decoration - And much more! Calibrate instructions: - To calibrate the levels, hold the phone against a reference surface and press the Calibrate button. - Do this one time for the face-up orientation only.

SleepWindow helps you plan sleep timing around 90-minute sleep cycles. Pick a wake time and see when to go to bed — or tap "sleep now" to see when to set your alarm. Plan naps that end at the right stage. See a conservative caffeine cutoff for your target bedtime. Features • Bedtime calculator — pick your wake time, get ideal bedtime options • Wake-time calculator — tap "if I fall asleep now," get wake options • Nap planner — power nap, short nap, full-cycle nap • Caffeine cutoff — plan when to stop caffeine based on bedtime • Bedtime reminders — simple, reliable local reminders • Saved presets — quick access for workdays and weekends • 12-hour or 24-hour time, light or dark mode Privacy-first • No account, no sign-in • No cloud sync · anonymous, opt-out product analytics only • Works fully offline Pricing • Free forever: bedtime calculator, 3 wake-time calculations per day, one reminder, two saved presets • Premium Monthly — $1.99/month (auto-renewing) with a 7-day free trial: unlimited calculations, nap planner, caffeine cutoff, unlimited presets and reminders • Premium Yearly — $9.99/year (auto-renewing) with a 7-day free trial: the same premium features, billed annually • Premium Lifetime — $7.99 (one-time): the same premium features, paid once, kept forever Pick yearly to save vs. monthly, monthly to try premium month-to-month, or lifetime to unlock everything with a single purchase. Results are estimates for planning sleep timing. SleepWindow is not a medical device and does not diagnose, treat, or monitor any condition. Subscription details Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period; renewal is charged within 24 hours of the period end. Manage subscriptions in your Apple ID Account Settings. Any unused portion of a free trial is forfeited when you purchase a subscription before the trial ends. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://has-deploy.github.io/sleepwindow-website/privacy-policy.html