Check Calendar vs ChuckNote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Check Calendar
Easily track your daily habits by marking them on a calendar. Add notes, customize with emojis, and view progress reports. Offers features like reminders, data backup, and biometric security for a private and convenient experience.
- One-tap calendar checks
- Add notes to entries
- Unlimited habit categories
- Customizable emojis
- Progress reports and graphs
- Daily reminders
- Biometric authentication
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Check Calendar is an app that lets you track your habits by marking them off on a calendar. It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more. ■ Check off on the calendar Track your habits by checking them off on the calendar with a single tap. ■ Notes Supports both short and long notes! Write freely to keep your records. ■ Unlimited tabs Create unlimited categories like "Workout," "Study," and "Reading." ■ Emojis Change your checkmark to any emoji you like. ■ Checkmark color Change your checkmark to any color you like. ■ Reports Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months." ■ History View your check-off history, a list of past notes, and more. ■ Notifications Send notifications at any time with any message you choose. Use them so you never forget your habits. ■ Backup / Restore Automatically back up and restore your data. You can transfer your data even across different devices. ■ Widget Check off on the calendar and view your totals right from the widget, without opening the app. You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts. ■ Dark mode Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings." ■ Color theme Change the background color to any color you like. ■ Archive Hide calendars you don't want to see by archiving them. ■ Biometric authentication Supports Face ID and Touch ID. Keep your important records safe and secure. ■ CSV export Export an individual calendar or all of your data in CSV format. ■ Check count Freely set how many times you can check off per day. ■ Security Your data is stored only on your device. It is never sent to third parties. ■ No login required Start using the app right away without signing in. ■ Offline support Works even without an internet connection. ■ Privacy Policy https://checkcalendar.app/privacy-policy ■ Contact If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below. info@checkcalendar.app
ChuckNote
This app connects your notes through shared keywords, creating visual trails of related ideas without manual tagging. It also allows you to pin notes to specific locations on a map, making them easily retrievable.
- Automatic Acorn Trail connections
- Pin notes to map locations
- Rich text and drawing editor
- Export notes as PDF or text
- Privacy shield for app switcher
- Search, sort, and filter notes
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Chuck Note is a delightfully different note app built around one big idea: your notes are connected, and the connections matter. Write. Stash. Follow the Trail. Jot down anything — quick thoughts, project notes, journal entries, or creative sparks. Chuck Note's clean editor gives you rich text, drawing tools, and attachments all in one place. ACORN TRAILS — THE SMARTER WAY TO FIND CONNECTIONS Chuck Note watches your subjects for shared keywords. When two or more notes share a word, it automatically groups them into an Acorn Trail — a visual path showing how your ideas relate. No folders to manage. No tags to assign. Just write naturally and Chuck finds the connections. STASH ACORNS — PIN IDEAS TO A PLACE Tap to drop a pin on any note and stash it on the map. Whether it's a hiking trail, a restaurant you want to remember, or a neighborhood you want to explore — your notes live where they happened. Open the map tab anytime to find them. EVERYTHING IN ITS PLACE • Notes list with search, sort, and filter • Star important notes to surface them fast • Protected notes add an extra confirmation before deleting • Export any note as a PDF or plain text file • Privacy shield hides your notes in the app switcher BUILT FOR EVERY KIND OF NOTE-TAKER Daily journaling, work projects, creative brainstorming, or a little of everything — Chuck Note adapts to how you think, not the other way around. Download Chuck Note and start building your burrow.
Screenshots
Verdict
The clearest difference is in-app purchases: ChuckNote at none against Check Calendar's 1. ChuckNote also leads on rating (5.0 vs 4.7). Check Calendar's advantage is ratings volume (1.5K vs 1) and iOS requirement (15.1 vs 26.5). On price, ads 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. Check Calendar sells 1 one-off in-app purchase. ChuckNote asks for nothing beyond the download.
ChuckNote holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Check Calendar has 1.5K ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Check Calendar | ChuckNote |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 52.2% of reviews | — |
| Number of ratings | 1.5K — better | 1 |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.5 |
| Further details — not scored | ||
| Size | 58 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | naoki otsu | CARLOS IVAN SILVA |
Customer experience
Check Calendar
ChuckNote
Bugs and requests
Check Calendar
Reported bugs
3 issues- Inconsistent date tracking
- Syncing issues between devices
- Unexpected loss of data and progress
Requested features
4 requests- Add widget support
- Implement reminder/notification system
- Provide more data visualization and analytics
- Allow selective clearing of check marks
ChuckNote
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Check Calendar
- Premium (Pay Once)$4.99
ChuckNote
No in-app purchases







