StudyCal vs PIECE
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
StudyCal
Read full descriptionHide full description
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. โ 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 โ 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 โ 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. โ 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/
PIECE
Read full descriptionHide full description
ๅ่ๆธใฎ็ฎๆฌกใฎ1่กใใ1ๅใงใใชใใใใใผในใใซใใใ ๆๆใใจใฎๆตใใงใไธใใ้ ใซ้ฒใใฆใใใใใฎใฟในใฏ็ฎก็ใงใใ โ ็ฎๆฌกใๆฎใใจใ่กใใใฎใพใพใใผในใซใชใ ๅ่ๆธใฎ็ฎๆฌกใๆฎใใจใ็ซ ใจ็ฏใ่ชญใฟๅใฃใฆใใฎใพใพไธฆในใพใใ ่กใฎ1ใค1ใคใใใผในใงใ็ซ ใฎใพใจใพใใใใผในใซใใใใจใใ ใใฎไธใฎ้ ็ฎใ ใใใใผในใซใใใใจใใงใใพใใ ่ชญใฟๅใฃใใใจใซๆใก็ดใใป้ ็ชใๅ ฅใๆฟใใใป่กใ่ถณใใปๅใใใใงใใพใใ ๆฎใใใซๆใงๅ ฅใใใใจใใงใใพใใ โ ๆๆใใจใฎๆตใใง้ฒใ ้ใใจใๆๆใใจใฎๆตใใไธฆใณใพใใ ไธใ็ตใใใถใใใใฎไธใ้ฒใใฆใใใถใใใใใซไธใใใใใใฎใใฎใงใใ ใใผในใๆผใใฆใๅงใใใใ็ตใใใใๅฎไบใซใใใใ 1ๆใๅคงใใใใใใใใฎๅ ดใงไฝๆใใซๅใใใใพใใ ใขใใชใๅๆใซ้ใๆฑบใใใใจใฏใใใพใใใๅคงใใใๆฑบใใใฎใฏใใชใใงใใ โ ๆ้ใฏไปใใฆใไปใใชใใฆใใใ ๆฅไปใๆฑบใใชใใฆใใใใผในใฏๅงใใใใพใใ ๆ้ใไปใใใจๆญใซๆฅไปใๅบใฆใๆฎใใฏใ-3ๆฅใใ้ใใใถใใฏใ+8ๆฅใใง่ฆใใพใใ ๆ้ใไปใใๆฅใฎๆใซ้็ฅใๅฑใใพใ๏ผ่จญๅฎใงๅใใพใ๏ผใ ๆใๆญขใใใจใใฏใไผๆญขใใใใงใใพใ ๆใไปใใฆใใชใ็ถๆ ใซๆปใใพใใ โ ไฝๅจใใใๆๆ 1ๅจใง็ตใใใชใๆๆใฏใใใผในใ1ๆ็ตใใใใณใซๆฌกใฎๅจใฎ1ๆใ็จๆใใใพใใ 1ๅจใถใใๅ จ้จ็ตใใฆใใใพใจใใฆๆฌกใฎๅจใซ้ฒใๅฝขใ้ธในใพใใ ็ฎๆจใฎๅจๅใฏๆๆใใจใซๆฑบใใใใพใใ โ ใใผในใใจใซ้ไธญใ่จใ 25ๅใฎใฟใคใใผใใใใพ้ฒใใฆใใใใผในใซ็ตใณใคใใฆๅใใพใใ ๆฎใใฎใฏๅๆฐใจใใไบๅฎใ ใใงใๆ้ใใ้ฒใฟๅ ทๅใๆจๅฎใใใใจใฏใใพใใใ ใฟใคใใผใไฝฟใใชใใฆใใๅฎไบใฏ่จ้ฒใใใพใใ โ AIใซ็ธ่ซใงใใ ็ป้ฒใใๆๆใปใใผในใปๆ้ใปใใใพใงใฎ่จ้ฒใปๅฟๆๆ กใปๆจก่ฉฆใ่ฆใใใใงใ ๆ็ซ ใง็ธ่ซใงใใพใใ่ถณใใชใใใจใใใใฐ่ใ่ฟใใฆใใพใใ ๆ้ใๅคใใๆๆกใฏใๅฏพ่ฑกใจๅคๆดๅๅพใไธ่ฆงใงๅบใพใใ ๅๆ ใใใใฎใฏใๅ ๅฎนใ็ขบใใใฆใๅฎ่กใใใใๆผใใใจใใ ใใงใใ ๅๆ ใใใใจใใๅใๆถใใพใใไผ่ฉฑใฏใใจใง่ชญใฟ่ฟใใพใใ ๅๆใซๆ้ใ่จ้ฒใๆธใๆใใใใจใฏใใใพใใใ โ ่จญ่จใฎ็ดๆ ใปใขใใชใฏ้กใงใใฃใฆ่ญฆๅ ฑๅจใงใฏใใใพใใใ้ ใใฏๆฅๆฐใงๅฐใใๅบใใ ใใงใ ใปๆ่ฆๆ้ใ้ๆ่ฆ่พผใฟใๆจๅฎใใพใใใไบๅฎใ ใใ่กจ็คบใใพใ ใป็ ฝใใใ็นๆฐใ็ดๆใใพใใ ใขใใชๅ ่ชฒ้ใซใคใใฆ: AIใธใฎ็ธ่ซใจ็ฎๆฌกใฎ่ชญใฟๅใใซใฏใใใฑใใใใไฝฟใใพใใ ็ธ่ซใฏใ1ๅใฎ็ธ่ซใงไฝฟใไธ้ใๆฑบใใฆใใๅงใใพใใ ใฏใใใฏ3ๆใงใ1ๆใใ100ๆใพใง่ชๅใงๅคใใใใพใใ ๆธใใฎใฏๅฎ้ใซไฝฟใฃใๅใ ใใงใไธ้ใ่ถ ใใฆไฝฟใใใจใฏใใใพใใใ ็ญใใๅฑใใชใใฃใใใๅใใงใฏๆธใใพใใใ ็ฎๆฌกใฎ่ชญใฟๅใใฏใ่ชญใฟๅใใใใผใธ1ๆใซใคใ1ๆใงใใ ๆๅใซ10ๆใใๆธกใใใพใใใใฑใใใฎ่ฟฝๅ ่ณผๅ ฅใฏ่ฒทใๅใใงใใ
Screenshots
Verdict
The clearest difference is in-app purchases: PIECE at none against StudyCal's 3. StudyCal's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. StudyCal sells 3 in-app purchases, starting at $0.99 per month. PIECE asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | StudyCal | PIECE |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Every 3 days | Every 3 days |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 59 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazuaki Takahashi | Shuntaro Shimada |
In-app purchases
StudyCal
- Pro+ ๆ้กใใฉใณ$0.991 Month
- Pro+ ๅนด้กใใฉใณ$9.991 Year
- ๅๅผทใซใฌใณใใผ Pro$1.99
PIECE
No in-app purchases
Questions
Is StudyCal free?
Is PIECE free?
Do StudyCal or PIECE have ads?
Which is updated more often, StudyCal or PIECE?
Other comparisons















