Plan Calendar vs TS Decks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Plan Calendar
Organize your life with a powerful monthly calendar app. Features include one-tap event creation, unlimited color-coded tabs for categories, event search, and secure backup/restore. Enjoy offline access and biometric authentication for privacy.
- One-tap event creation
- Unlimited color-coded tabs
- Event search functionality
- Backup and restore data
- Dark mode support
- Offline access
- Biometric authentication
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Create your plans on a monthly calendar and check your schedule anytime! Packed with powerful features including one-tap event creation, unlimited tabs, color-coded events, event search, backup & restore, dark mode support, and much more. ◆ One-Tap Event Creation Just tap a date on the monthly calendar to instantly add an event! ◆ Unlimited Tabs Split and manage your calendars by category with tabs! Create separate calendars for work, personal life, hobbies, and more! ◆ Color-Coded Events Color-code your events from a rich palette of colors! Recognize their importance and type at a glance! ◆ Swipe to Change Months No more tedious tapping to switch months. Just swipe to move between months intuitively. ◆ Event Search Search and find all your events in an instant! Pinpoint the schedule you need from even the largest amount of data in a flash! ◆ Backup and Restore Switch devices with peace of mind! Your data is backed up automatically and restored instantly on a new device! ◆ Light and Dark Mode Support A beautiful dark mode that's easy on the eyes! ◆ Offline Support No internet connection required! Access it anytime, anywhere! ◆ Notifications Get notified with your own custom message at the time you set! Never miss an important plan! ◆ Biometric Authentication Protect the app with Face ID or fingerprint authentication. Safeguard your privacy so only you can see your data. ◆ CSV Export Easily export all your data as a CSV file! Perfect for backups or analysis with AI. ◆ Tab Notes Add notes freely to each tab! Check important information for every category anytime! ◆ No Login Required No annoying sign-up process needed! Get started right after downloading! ◆ Robust Security Your data is completely private! Nothing is ever sent externally! It's stored safely on your device only! ◆ Support If you have any questions, please feel free to contact us through the in-app inquiry form or at the email address below. info@naokiotsu.com Privacy Policy: https://naokiotsu.com/privacy-policy
TS Decks
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Necks is an intelligent flashcard learning app based on the scientific spaced repetition algorithm (SM-2), helping you memorize and learn more efficiently. 【Core Features】 Scientific Algorithm: Uses proven spaced repetition algorithm that intelligently schedules review times based on your memory performance Flexible Organization: Create multiple decks to categorize and manage your learning content by topic Rich Content: Support Markdown format for professional card content Image Memory: Add images to card backs for visual memory enhancement Multilingual: Support for 13 language interfaces to meet global user needs Learning Statistics: Real-time view of learning progress and mastery status Smart Review: Automatically identifies cards due for review and arranges study plans Privacy Policy: https://icnvrac9ij4m.feishu.cn/wiki/VvlXwndbziHVyXkpjFFcAHtAnCg?from=from_copylink User Agreement: https://icnvrac9ij4m.feishu.cn/wiki/H7LewdiPqitkU5kkoa0c79DZnwh?from=from_copylink
Screenshots
Verdict
The clearest difference is ads: TS Decks at none against Plan Calendar's shown. Plan Calendar's advantage is update cadence (every 6 days vs monthly) and iOS requirement (15.1 vs 18.5). On price, 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. Plan Calendar sells 3 in-app purchases, starting at $1.99 per month and TS Decks sells 2 in-app purchases, starting at $5.99 per year. Whichever you choose, the download price is not the number that matters.
Plan Calendar ships an update every 6 days, TS Decks monthly. Both last shipped on October 30, 2026.
| Parameter | Plan Calendar | TS Decks |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (22 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 22 — better | — |
| Update frequency | Every 6 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.5 |
| Further details — not scored | ||
| Size | 52 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | naoki otsu | 绅 董 |
In-app purchases
Plan Calendar
- Premium$1.991 Month
- Premium$3.991 Year
- Premium (Pay Once)$4.99
TS Decks
- annual$5.991 Year
- lifetime$12.99









