Simple Study Stamp vs StudyCal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Study Stamp
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Your study time is more than just a number. Keep your goals—and your current study session—visible right from your Home Screen and Lock Screen. Simple Study Stamp is a simple yet practical study time tracker with stopwatch, timer, and manual entry. With widgets, you can quickly check: • Time remaining until your goal date • Total study time • Target study time • Progress percentage And while a timer or stopwatch is running, you can check your current study status directly from the Lock Screen. Even after leaving the app, you can instantly see whether a study session is still running and how long you’ve been studying. Stay aware of your study session. Stay focused on your goal. Simple Study Stamp is designed to make consistent studying easier. See your progress at a glance Your study time is automatically organized by day, week, month, and year. Use easy-to-read bar charts and pie charts to see what you’ve studied and how much time you’ve spent on each subject. The calendar view also makes it easy to look back and see: “How much did I study that day?” “How much have I accomplished this month?” Your effort doesn’t disappear—it becomes a visible record of your progress. Track your way Choose the recording method that fits your study style: • Stopwatch • Timer • Manual entry Whether you’re studying at your desk, learning a language on your commute, reading, preparing for an exam, or working on professional development, you can record your study time in the way that works best for you. Keep your goals visible Set a target study time and goal date for each subject. Instead of simply recording study hours, Simple Study Stamp helps you stay aware of how far you’ve come and how far you still have to go. Home Screen and Lock Screen support make your goals easier to remember throughout the day. Great for • Exam preparation • Certifications • Language learning • Reading • Programming • Professional development • Self-study and lifelong learning No complicated setup. No unnecessary features getting in your way. No in-app purchases. Just open the app, start studying, and keep building your progress one session at a time. One minute today can make a big difference tomorrow. Make every minute count.
StudyCal
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How many days until the exam? What should you study today? StudyCal is a study calendar that turns your plans into today's to-do list. Check a plan off and your study time adds up automatically. Exam countdowns, home screen widgets, a streak heatmap, a focus timer and more than 50 achievement badges are all included. No sign-in needed. With Pro+, you can reschedule missed plans in one tap, see your pace toward exam day, sync between iPhone and iPad, and share your progress with a parent. StudyCal brings your study plans, timetable, to-do list and study time tracking together in one simple app for middle school, high school and exam students. Plans you add appear on that day's to-do list, and a single tap marks them done. Subjects are color-coded, and your study time is shown in charts. ■ Made for - Students who want to keep studying every day - Anyone tired of using separate apps for a timetable and a to-do list - Students preparing for exams who want to see time spent on each subject - Anyone who wants to add weekly recurring classes in seconds ■ Main features - Today's to-do: today's study plans in one list, with your completion rate at a glance - Calendar: switch between month, week, day and list views in one tap. Color-coded subjects and recurring plans - Timetable: the week view works as a timetable (any number of periods) - Quick plans: pick a subject and a type, and the title fills in for you - Recurring plans: every week on one or more days, with an end date. Automatic numbering such as "Lesson 1, Lesson 2, Lesson 3..." - Check off: tap the circle to finish a plan; it goes straight into your totals - Stats: weekly, monthly and yearly study time in stacked bar charts, with a breakdown by subject - Materials and bookshelf: attach textbooks and workbooks to your plans and see the study time for each one (icon-only materials are unlimited; up to 5 with photos for free) - Plan types: homework, preview, review, past exams, drills, workbooks and more (add your own) - Export to your iPhone calendar or Google Calendar - Automatic backup: once a day, your plans, records, settings and photos are backed up, including to iCloud, so you can restore them on a new device (free; keeping several devices in sync is Pro+) - Sharing with a parent (Pro+): once the student approves, a parent can see study time, time per subject, streak days and completion rate on their own phone. Plan names and notes are never sent. Parents can send stamps and short messages - Exam countdown: add an exam date to see the days left on the home tab and on widgets - Widgets: check today's to-do list and the days until your exam from the home screen - Streaks and badges: see the days you studied on a heatmap and collect badges as you keep going - Focus timer: a Pomodoro-style timer that alternates focus and breaks - No sign-in needed ■ Easy to start StudyCal needs no account and no sign-in. Your study records stay on your iPhone or iPad and in your own iCloud. Study totals are sent only when you use sharing with a parent. ■ Optional upgrades - StudyCal Pro (one-time purchase): app colors, calendar background photos, unlimited material photos, widget colors and background images, rewards, focus timer styles and custom stamps - StudyCal Pro+ (auto-renewing monthly or yearly subscription): reschedule missed plans, iPhone and iPad sync, pace toward exam day, past weekly reports, monthly reports, exam reviews and sharing with a parent (a parent can see up to 6 children if the parent subscribes). Includes everything in Pro All the basic features, including plans, to-do lists and stats, work without upgrading. Pro+ renews automatically unless canceled at least 24 hours before the end of the current period. You can cancel anytime from your subscription settings. Terms of Use: https://kazutaka.biz/kiyaku/ Privacy Policy: https://kazutaka.biz/privacy/
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Verdict
The clearest difference is in-app purchases: Simple Study Stamp at none against StudyCal's 3. StudyCal's advantage is ads (none vs shown) and update cadence (every 3 days vs every 10 days). On price 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. StudyCal sells 3 in-app purchases, starting at $0.99 per month. Simple Study Stamp asks for nothing beyond the download.
Simple Study Stamp ships an update every 10 days, StudyCal every 3 days. The most recent releases landed on October 16, 2026 and October 29, 2026 respectively.
| Parameter | Simple Study Stamp | StudyCal |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 10 days | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Futoshi Akahoshi | Kazuaki Takahashi |
In-app purchases
Simple Study Stamp
No in-app purchases
StudyCal
- Pro+ 月額プラン$0.991 Month
- Pro+ 年額プラン$9.991 Year
- 勉強カレンダー Pro$1.99
Questions
Is Simple Study Stamp free?
Is StudyCal free?
Do Simple Study Stamp or StudyCal have ads?
Which is updated more often, Simple Study Stamp or StudyCal?
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