Comparison

Study Split vs PIECE

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Study Split

Features
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Version 2.9 makes Study Split easier to read, plan with, and use every day. โ€ข Refreshed the Home screen and Today dashboard design โ€ข Improved study cards so progress is easier to understand at a glance โ€ข Added clearer visuals for progress, streaks, and daily study status โ€ข Improved the empty state for first-time users โ€ข Improved compatibility for printable study sheets โ€ข Fixed minor layout issues and warnings โ€ข Improved overall stability This update helps you follow your daily study targets and stay organized until exam day.

About

PIECE

Features
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ๅ‚่€ƒๆ›ธใฎ็›ฎๆฌกใฎ1่กŒใ‚’ใ€1ๅ›žใงใ“ใชใ›ใ‚‹ใ€Œใƒ”ใƒผใ‚นใ€ใซใ™ใ‚‹ใ€‚ ๆ•™ๆใ”ใจใฎๆตใ‚Œใงใ€ไธŠใ‹ใ‚‰้ †ใซ้€ฒใ‚ใฆใ„ใใŸใ‚ใฎใ‚ฟใ‚นใ‚ฏ็ฎก็†ใงใ™ใ€‚ โ–  ็›ฎๆฌกใ‚’ๆ’ฎใ‚‹ใจใ€่กŒใŒใใฎใพใพใƒ”ใƒผใ‚นใซใชใ‚‹ ๅ‚่€ƒๆ›ธใฎ็›ฎๆฌกใ‚’ๆ’ฎใ‚‹ใจใ€็ซ ใจ็ฏ€ใ‚’่ชญใฟๅ–ใฃใฆใใฎใพใพไธฆในใพใ™ใ€‚ ่กŒใฎ1ใค1ใคใŒใƒ”ใƒผใ‚นใงใ€็ซ ใฎใพใจใพใ‚Šใ‚’ใƒ”ใƒผใ‚นใซใ™ใ‚‹ใ“ใจใ‚‚ใ€ ใใฎไธ‹ใฎ้ …็›ฎใ ใ‘ใ‚’ใƒ”ใƒผใ‚นใซใ™ใ‚‹ใ“ใจใ‚‚ใงใใพใ™ใ€‚ ่ชญใฟๅ–ใฃใŸใ‚ใจใซๆ‰“ใก็›ดใ™ใƒป้ †็•ชใ‚’ๅ…ฅใ‚Œๆ›ฟใˆใ‚‹ใƒป่กŒใ‚’่ถณใ™ใƒปๅˆ†ใ‘ใ‚‹ใŒใงใใพใ™ใ€‚ ๆ’ฎใ‚‰ใšใซๆ‰‹ใงๅ…ฅใ‚Œใ‚‹ใ“ใจใ‚‚ใงใใพใ™ใ€‚ โ–  ๆ•™ๆใ”ใจใฎๆตใ‚Œใง้€ฒใ‚€ ้–‹ใใจใ€ๆ•™ๆใ”ใจใฎๆตใ‚ŒใŒไธฆใณใพใ™ใ€‚ ไธŠใŒ็ต‚ใˆใŸใถใ‚“ใ€ใใฎไธ‹ใŒ้€ฒใ‚ใฆใ„ใ‚‹ใถใ‚“ใ€ใ•ใ‚‰ใซไธ‹ใŒใ“ใ‚Œใ‹ใ‚‰ใฎใ‚‚ใฎใงใ™ใ€‚ ใƒ”ใƒผใ‚นใ‚’ๆŠผใ—ใฆใ€Œๅง‹ใ‚ใ‚‹ใ€ใ€็ต‚ใˆใŸใ‚‰ใ€ŒๅฎŒไบ†ใซใ™ใ‚‹ใ€ใ€‚ 1ๆžšใŒๅคงใใ™ใŽใŸใ‚‰ใ€ใใฎๅ ดใงไฝ•ๆžšใ‹ใซๅˆ†ใ‘ใ‚‰ใ‚Œใพใ™ใ€‚ ใ‚ขใƒ—ใƒชใŒๅ‹ๆ‰‹ใซ้‡ใ‚’ๆฑบใ‚ใ‚‹ใ“ใจใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚ๅคงใใ•ใ‚’ๆฑบใ‚ใ‚‹ใฎใฏใ‚ใชใŸใงใ™ใ€‚ โ–  ๆœŸ้™ใฏไป˜ใ‘ใฆใ‚‚ไป˜ใ‘ใชใใฆใ‚‚ใ„ใ„ ๆ—ฅไป˜ใ‚’ๆฑบใ‚ใชใใฆใ‚‚ใ€ใƒ”ใƒผใ‚นใฏๅง‹ใ‚ใ‚‰ใ‚Œใพใ™ใ€‚ ๆœŸ้™ใ‚’ไป˜ใ‘ใ‚‹ใจๆœญใซๆ—ฅไป˜ใŒๅ‡บใฆใ€ๆฎ‹ใ‚Šใฏใ€Œ-3ๆ—ฅใ€ใ€้ŽใŽใŸใถใ‚“ใฏใ€Œ+8ๆ—ฅใ€ใง่ฆ‹ใˆใพใ™ใ€‚ ๆœŸ้™ใ‚’ไป˜ใ‘ใŸๆ—ฅใฎๆœใซ้€š็ŸฅใŒๅฑŠใใพใ™๏ผˆ่จญๅฎšใงๅˆ‡ใ‚Œใพใ™๏ผ‰ใ€‚ ๆ‰‹ใ‚’ๆญขใ‚ใ‚‹ใจใใฏใ€Œไผ‘ๆญขใ™ใ‚‹ใ€ใงใ€ใพใ ๆ‰‹ใ‚’ไป˜ใ‘ใฆใ„ใชใ„็Šถๆ…‹ใซๆˆปใ›ใพใ™ใ€‚ โ–  ไฝ•ๅ‘จใ‹ใ™ใ‚‹ๆ•™ๆ 1ๅ‘จใง็ต‚ใ‚ใ‚‰ใชใ„ๆ•™ๆใฏใ€ใƒ”ใƒผใ‚นใ‚’1ๆžš็ต‚ใˆใ‚‹ใŸใณใซๆฌกใฎๅ‘จใฎ1ๆžšใŒ็”จๆ„ใ•ใ‚Œใพใ™ใ€‚ 1ๅ‘จใถใ‚“ใ‚’ๅ…จ้ƒจ็ต‚ใˆใฆใ‹ใ‚‰ใพใจใ‚ใฆๆฌกใฎๅ‘จใซ้€ฒใ‚€ๅฝขใ‚‚้ธในใพใ™ใ€‚ ็›ฎๆจ™ใฎๅ‘จๅ›žใฏๆ•™ๆใ”ใจใซๆฑบใ‚ใ‚‰ใ‚Œใพใ™ใ€‚ โ–  ใƒ”ใƒผใ‚นใ”ใจใซ้›†ไธญใ‚’่จˆใ‚‹ 25ๅˆ†ใฎใ‚ฟใ‚คใƒžใƒผใ‚’ใ€ใ„ใพ้€ฒใ‚ใฆใ„ใ‚‹ใƒ”ใƒผใ‚นใซ็ตใณใคใ‘ใฆๅ›žใ›ใพใ™ใ€‚ ๆฎ‹ใ‚‹ใฎใฏๅ›žๆ•ฐใจใ„ใ†ไบ‹ๅฎŸใ ใ‘ใงใ€ๆ™‚้–“ใ‹ใ‚‰้€ฒใฟๅ…ทๅˆใ‚’ๆŽจๅฎšใ™ใ‚‹ใ“ใจใฏใ—ใพใ›ใ‚“ใ€‚ ใ‚ฟใ‚คใƒžใƒผใ‚’ไฝฟใ‚ใชใใฆใ‚‚ใ€ๅฎŒไบ†ใฏ่จ˜้Œฒใ•ใ‚Œใพใ™ใ€‚ โ–  AIใซ็›ธ่ซ‡ใงใใ‚‹ ็™ป้Œฒใ—ใŸๆ•™ๆใƒปใƒ”ใƒผใ‚นใƒปๆœŸ้™ใƒปใ“ใ‚Œใพใงใฎ่จ˜้Œฒใƒปๅฟ—ๆœ›ๆ กใƒปๆจก่ฉฆใ‚’่ฆ‹ใŸใ†ใˆใงใ€ ๆ–‡็ซ ใง็›ธ่ซ‡ใงใใพใ™ใ€‚่ถณใ‚Šใชใ„ใ“ใจใŒใ‚ใ‚Œใฐ่žใ่ฟ”ใ—ใฆใใพใ™ใ€‚ ๆœŸ้™ใ‚’ๅค‰ใˆใ‚‹ๆๆกˆใฏใ€ๅฏพ่ฑกใจๅค‰ๆ›ดๅ‰ๅพŒใŒไธ€่ฆงใงๅ‡บใพใ™ใ€‚ ๅๆ˜ ใ•ใ‚Œใ‚‹ใฎใฏใ€ๅ†…ๅฎนใ‚’็ขบใ‹ใ‚ใฆใ€ŒๅฎŸ่กŒใ™ใ‚‹ใ€ใ‚’ๆŠผใ—ใŸใจใใ ใ‘ใงใ™ใ€‚ ๅๆ˜ ใ—ใŸใ‚ใจใ‹ใ‚‰ๅ–ใ‚Šๆถˆใ›ใพใ™ใ€‚ไผš่ฉฑใฏใ‚ใจใง่ชญใฟ่ฟ”ใ›ใพใ™ใ€‚ ๅ‹ๆ‰‹ใซๆœŸ้™ใ‚„่จ˜้Œฒใ‚’ๆ›ธใๆ›ใˆใ‚‹ใ“ใจใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚ โ–  ่จญ่จˆใฎ็ด„ๆŸ ใƒปใ‚ขใƒ—ใƒชใฏ้กใงใ‚ใฃใฆ่ญฆๅ ฑๅ™จใงใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚้…ใ‚Œใฏๆ—ฅๆ•ฐใงๅฐใ•ใๅ‡บใ™ใ ใ‘ใงใ™ ใƒปๆ‰€่ฆๆ™‚้–“ใ‚„้”ๆˆ่ฆ‹่พผใฟใ‚’ๆŽจๅฎšใ—ใพใ›ใ‚“ใ€‚ไบ‹ๅฎŸใ ใ‘ใ‚’่กจ็คบใ—ใพใ™ ใƒป็…ฝใ‚‰ใšใ€็‚นๆ•ฐใ‚‚็ด„ๆŸใ—ใพใ›ใ‚“ ใ‚ขใƒ—ใƒชๅ†…่ชฒ้‡‘ใซใคใ„ใฆ: AIใธใฎ็›ธ่ซ‡ใจ็›ฎๆฌกใฎ่ชญใฟๅ–ใ‚Šใซใฏใ€Œใƒใ‚ฑใƒƒใƒˆใ€ใ‚’ไฝฟใ„ใพใ™ใ€‚ ็›ธ่ซ‡ใฏใ€1ๅ›žใฎ็›ธ่ซ‡ใงไฝฟใ†ไธŠ้™ใ‚’ๆฑบใ‚ใฆใ‹ใ‚‰ๅง‹ใ‚ใพใ™ใ€‚ ใฏใ˜ใ‚ใฏ3ๆžšใงใ€1ๆžšใ‹ใ‚‰100ๆžšใพใง่‡ชๅˆ†ใงๅค‰ใˆใ‚‰ใ‚Œใพใ™ใ€‚ ๆธ›ใ‚‹ใฎใฏๅฎŸ้š›ใซไฝฟใฃใŸๅˆ†ใ ใ‘ใงใ€ไธŠ้™ใ‚’่ถ…ใˆใฆไฝฟใ†ใ“ใจใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚ ็ญ”ใˆใŒๅฑŠใ‹ใชใ‹ใฃใŸใ‚„ใ‚Šๅ–ใ‚Šใงใฏๆธ›ใ‚Šใพใ›ใ‚“ใ€‚ ็›ฎๆฌกใฎ่ชญใฟๅ–ใ‚Šใฏใ€่ชญใฟๅ–ใ‚ŒใŸใƒšใƒผใ‚ธ1ๆžšใซใคใ1ๆžšใงใ™ใ€‚ ๆœ€ๅˆใซ10ๆžšใ‚’ใŠๆธกใ—ใ—ใพใ™ใ€‚ใƒใ‚ฑใƒƒใƒˆใฎ่ฟฝๅŠ ่ณผๅ…ฅใฏ่ฒทใ„ๅˆ‡ใ‚Šใงใ™ใ€‚

Screenshots

Study Split2 screens
PIECE4 screens

Verdict

The call

The clearest difference is in-app purchases: PIECE at none against Study Split's 2. PIECE also leads on update cadence (every 3 days vs every 11 days). On price, ads, device support and iOS requirement 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Study Split sells 2 in-app purchases, starting at $0.49 per month. PIECE asks for nothing beyond the download.

UpkeepUpdate frequency

Study Split ships an update every 11 days, PIECE every 3 days. The most recent releases landed on September 21, 2026 and September 29, 2026 respectively.

Scorecard2 real differences ยท 4 level
Study Split versus PIECE: the parameters behind the verdict, then further details
ParameterStudy SplitPIECE
PriceFreeFree
Update frequencyEvery 11 daysEvery 3 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS18.617.0 โ€” better
Further details โ€” not scored
Size11 MB12 MB
Age rating4+4+
DeveloperSatoshi YamadaShuntaro Shimada

In-app purchases

2 purchases

Study Split

Subscriptions2
  • Up to 5 Subjects (Monthly)$0.491 Month
  • Unlimited Subjects (Monthly)$0.991 Month
None

PIECE

No in-app purchases

Questions

Is Study Split free?
Study Split is free to download, with in-app purchases available.
Is PIECE free?
PIECE is free to download, with no in-app purchases.
Do Study Split or PIECE have ads?
Neither Study Split nor PIECE shows ads.
Which is updated more often, Study Split or PIECE?
Study Split ships an update every 11 days, and PIECE every 3 days. Most recently, Study Split was updated on September 21, 2026 and PIECE on September 29, 2026.

Other comparisons