Red Calendar 2026 vs FlowState
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Red Calendar 2026
This app simplifies event logging with quick taps for simple entries and long presses for more options. It highlights public holidays and recurring events, offers customization like background images, and supports dark mode and widgets.
- Quick event registration
- Recurring event saving
- Annual calendar view for holidays
- Customizable background images
- Dark mode and widgets support
- International holiday calendars
Read full descriptionHide full description
• 40k reviews / Rating 4.7 • 500k cumulative downloads The Easiest Calendar App for Logging Events: "Red Calendar" An intuitive calendar app where you can easily see public holidays. "Red Calendar" - See Red Days at a Glance The simplest calendar app in the world, "Red Calendar" • Tap a date once to quickly save the simplest event • Long press a date to access a variety of event options • Save recurring events monthly or yearly • View red days at a glance with the annual calendar • Set your background image to match your taste • Save your calendar as an image and set it as your phone background • Supports dark mode and widgets • Supports calendars from various countries with public holidays • Support for various global holiday calendars 1. Truly Simple Event Registration: Now you can skip complicated times and notifications when adding an event! Simply tap a date to add a quick event or memo. For continuous events like vacations, long press to add them 2. Even Simpler Event Options: Long press a date to change the color of your event. Want to emphasize a specific event? Use the highlight feature! For recurring events like birthdays, anniversaries, or payday, use the repeat event feature 3. Annual Calendar: Wondering when the red days are this year? Don’t check month by month—just tap the annual calendar button in the top left corner of the app 4. Supports Dark Mode and Widgets: View your calendar in dark mode to avoid straining your eyes. Of course, you can always set it to dark or light mode, regardless of system settings. Check out the newly added widgets as well 5. See Red Days at a Glance: Quickly check public holidays and substitute holidays. Use the annual calendar to instantly see when the days off are throughout the year. Curious about holidays abroad? Explore and stay updated with a wide variety of international holidays we support. Please leave a rating and share any features you’d like to see or any issues you’ve encountered in your review. The developer personally checks them and will leave a reply :D Thank you for using Red Calendar! Red Calendar Pro Version: Remove the bottom ads to use the calendar more freely Red Calendar is a free app that offers a variety of features to make the easiest calendar app possible. For those who want a more powerful experience and a happier day or month, we offer additional features as a premium service. Of course, the free features alone are strong enough to provide a powerful experience. Payment will be charged to your Apple ID account upon purchase confirmation. Subscriptions will automatically renew unless canceled at least 24 hours before the end of the current period. Renewal will be charged within 24 hours before the current period ends. After subscribing, you can manage and cancel subscriptions in your App Store account settings Terms of Service: https://redcalendar-7d563.web.app/terms.html Privacy Policy: https://redcalendar-7d563.web.app/privacy-policy.html Contact: +82-10-2976-9889 Email: blackturtle2@gmail.com
FlowState
Read full descriptionHide full description
Enter deep focus with FlowState, a productivity timer that helps you achieve flow state through structured work sessions and mindful breaks. FOCUS SESSIONS Customizable timer with Pomodoro and custom intervals. Track your focus streaks and build consistency day by day. FLOW TRACKING See your daily, weekly, and long-term focus time. Identify your most productive hours and build better habits with visual analytics. AMBIENT SOUNDS Choose from curated background sounds designed to enhance concentration - rain, cafe, nature, white noise, and more. SMART BREAKS Timed breaks with breathing exercises and stretch reminders. Stay refreshed and prevent burnout. EVERYTHING INCLUDED Every feature unlocked. No ads. No data collection. Just focus. — Subscription & Terms — FlowState Premium is an auto-renewing monthly subscription ($2.99/month, after a 7-day free trial) or a one-time Lifetime purchase ($19.99). Payment is charged to your Apple Account at confirmation of purchase. The monthly subscription automatically renews unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://kirbyfze.github.io/flowstate-legal/terms-of-use.html Privacy Policy: https://kirbyfze.github.io/flowstate-legal/privacy-policy.html
Screenshots
Verdict
The clearest difference is ads: FlowState at none against Red Calendar 2026's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Red Calendar 2026 sells 2 in-app purchases, starting at $1.99 per month and FlowState sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Red Calendar 2026 ships an update every 2 weeks, FlowState every 10 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | Red Calendar 2026 | FlowState |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (670 ratings) — better | — |
| Positive reviews | 92.3% of reviews | — |
| Number of ratings | 670 — better | — |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 91 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | jaesung Lee | Christian Pedersen |
In-app purchases
Red Calendar 2026
- Monthly Pro Subscription$1.991 Month
- Yearly Pro Subscription$9.991 Year
FlowState
- Premium Monthly7 Days trial$2.991 Month
- Premium Lifetime$19.99









