RedCalendar vs Tending

Try our cycle tracking app: analyze and predict menstruation, ovulation, and fertile days. We're not going to suggest that you evaluate mood shifts, drink water, or analyze your steps or hours slept, but you can enter any information about every day if you want to. The app is cloud-based: you don't need to worry about backups or iCloud space. If the need arises, RedCalendar will also work in airplane mode, so you can add your data and sync it later when you're back online. ANALYSIS AND PREDICT We use the median values of data you input to calculate your cycle. That's better using the average and more honest than talking about artificial intelligence. The app will adapt to you. And if you're prescribed pills to regulate an irregular cycle, enter what your new ideal cycle looks like in the settings and the app will remember them for 3 months. REMINDERS We send notifications at 9:00 and only about what matters: 2 days before your cycle starts, a day after the end of menstruation (if you forgot to mark it), and 4 days before your predicted ovulation. If you go on vacation, and your time zone changes, open the app, so we know. TAGS Use tags for giving additional info about the day. Just add one or more custom tags and track your workouts, emotions or new habits. Use the app every day as your personal dairy. PAYMENT AND SUBSCRIPTIONS The app is free to use and ad-free

Tending is a calm, private home for the rhythms worth keeping an eye on: your menstrual cycle, your water, and your movement. No account, no cloud, no tracking — everything stays on your device. MENSTRUAL CYCLE & MOON - Log period start and end dates in seconds, and backlog past cycles too. - Adaptive predictions learn from your history — the more you log, the sharper your next-period, ovulation, and fertile-window estimates become. - A day-by-day phase ring shows exactly where you are in your cycle. - Swipe to a moon view that tracks the lunar phase alongside your cycle. - A full-year calendar map and a cycle-vs-moon chart reveal your patterns over time. - An optional, gentle reminder before your next predicted period. WATER - Track every sip against a daily goal with a playful animated tumbler. - One-tap quick-add buttons you can customize. - Hydration streaks and pace-aware reminders that nudge you only when you fall behind. - Optional, write-only sync to Apple Health. - A Home Screen and Lock Screen widget with one-tap logging. MOVEMENT - A simple daily yes/no workout streak with a weekly goal. - A 16-week heatmap so you can see your consistency at a glance. PRIVACY FIRST - All your data is stored only on your device. There is no Tending account and no server. - No analytics, no ads, no third-party tracking. - Lock the app behind Face ID, Touch ID, or your passcode. - Your cycle data never leaves the app. The only optional sharing is water to Apple Health — off by default and write-only. Tending is built to be quiet, warm, and yours.