ISO 8601 Keyboard vs Calnote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISO 8601 Keyboard
Instantly input dates in YYYY-MM-DD format with a single tap. Offers a date picker for any date and smart backspace for easy correction. Streamlines workflows for professionals working with standardized dates.
- Instant date entry (yesterday, today, tomorrow)
- ISO 8601 format (YYYY-MM-DD)
- Date picker wheel for any date
- Smart backspace for date removal
- Auto space after date
- Auto keyboard switch
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Type dates the right way instantly. Stop typing dates by hand. ISO 8601 Keyboard puts yesterday, today, and tomorrow's date in YYYY-MM-DD format one tap away. Perfect for developers, researchers, writers, and anyone who works with standardized dates. INSTANT DATE ENTRY Tap once to insert yesterday's, today's, or tomorrow's date in ISO 8601 format. No typing, no mistakes. DATE WHEEL FOR ANY DATE Need a date beyond tomorrow? Or maybe years ago? Swipe left to reveal a date picker wheel and insert any date in YYYY-MM-DD format just as easily. SMART BACKSPACE Made a mistake? One tap of the backspace key removes the entire last date you typed — no hunting character by character. AUTO SPACE Optionally append a space after every date so your cursor is always ready for the next word. AUTO KEYBOARD SWITCH Set the keyboard to automatically return to your previously active keyboard after inserting a date, keeping your workflow seamless. LIGHTWEIGHT & PRIVATE ISO 8601 Keyboard uses minimal system resources and never touches your data.
Calnote
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Calnote is a local-first minimalist calendar journal. Open the monthly calendar, tap any date, and record mood notes, reflections, and daily thoughts in seconds. [What you can do] • View a continuous monthly calendar with clearer highlights for today, lunar dates, and recorded days • Write daily notes, weekly reviews, ideas, and reflections with auto-save • Full-text search entries and jump back to the exact day • Optional iCloud sync across devices • Export Markdown for backup and further writing Data is stored on your device by default. If sync is enabled, transfer uses Apple iCloud / CloudKit private database. Privacy Policy: https://calnoteapp.pages.dev/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Calnote at Free against ISO 8601 Keyboard's $1.99. Calnote also leads on update cadence (every 6 days vs every 7 months). ISO 8601 Keyboard's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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
Calnote is free to download; ISO 8601 Keyboard costs $1.99 up front. Calnote sells 3 in-app purchases, starting at $0.99 per month. ISO 8601 Keyboard asks for nothing beyond the download.
ISO 8601 Keyboard ships an update every 7 months, Calnote every 6 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | ISO 8601 Keyboard | Calnote |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 7 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Branagan | 金苹 卢 |
In-app purchases
ISO 8601 Keyboard
No in-app purchases
Calnote
- Monthly Membership$0.991 Month
- Yearly Membership$9.991 Year
- Lifetime$14.99
