Comparison

StudyDay vs Study On

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

Head to head
About

StudyDay

Features
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Study timer & focus planner for students and exam takers — track every subject, hit your study goals. StudyDay: Study Timer & Log is a simple, beautiful study tracker built for students and exam takers. Tap to start a stopwatch for any subject, stop when you're done, and your time is saved automatically. No setup, no complexity. KEY FEATURES • Subject Timer — One tap starts a stopwatch for any subject. Switch subjects anytime; the previous one stops automatically. • Monthly Calendar — See which days you studied at a glance. Tap any day to jump straight to the timer. • Study Stickers — After each session, pick a sticker that matches your mood. Your calendar fills up with small victories. • Detailed Statistics — View your study time by day, week, or month. A bar chart shows your weekly rhythm; a donut chart breaks down time by subject. • Manual Entry — Forgot to start the timer? Enter time directly for any subject and date. • Subject Management — Add as many subjects as you need, each with its own color, so your data is always organized. DESIGNED FOR SIMPLICITY No account required. No internet connection needed. All your data stays on your device — private, always. Whether you're preparing for an exam, tracking daily study habits, or just curious how much time you spend on each subject, StudyDay gives you the clarity you need.

About

Study On

Features
Read full description

Your perfect study mate, Study On! The most intuitive and complete study planner app for everyone running toward their goals. Gather your scattered school timetables, academy schedules, and daily assignments all in one place! Our smart timer keeps you from getting distracted, and the ranking system with friends will definitely keep you motivated. With Study On, boring study sessions turn into an exciting quest. [ Study On's Special Core Features ] 1. Smart Calendar & Timetable at a Glance • Clearly separate and manage your regular school classes and academy/tutoring schedules. • Flexibly adjust everything from your macro exam plans to today's detailed timeline with support for monthly, weekly, and daily views. • Easily register and manage recurring academy schedules or regular study sessions all at once. 2. Block Distractions! Pure Focus Timer • Accurately measure your "pure" focus time today with our intuitive stopwatch and timer features. • Helps you put your smartphone away and completely immerse yourself in your studies. • Your daily measured focus time is meticulously recorded in the calendar, allowing you to review and reflect on your study patterns anytime. 3. ZERO Missed Assignments! Today's Quests & D-Days • Automatically categorizes all approaching deadlines—like performance assessments, school homework, academy assignments, and materials to prepare—into the "Today's Quests" list. • Maintain your focus by checking the remaining days for important midterms, finals, mock exams, and college entrance exams every day through the D-Day banner on the main dashboard. • Convert what you've learned into long-term memory with the review quest feature, tailored perfectly to the Ebbinghaus Forgetting Curve. 4. Weekly Study Rankings with Friends • Register study mates in real-time by sharing your unique friend code. • A real-time TOP 3 ranking among friends is displayed on your dashboard based on this week's "accumulated study time." • Get twice the motivation and positive study stimulation compared to studying alone! 5. Customize Your Own Aesthetic Planner • Earn coins and EXP (Experience) by checking in daily, completing quests, and achieving your target study times! • Use your collected coins in the shop to unlock various planner background textures (like grid paper, vintage drawing paper, etc.). • Decorate your one-and-only, unique planner with a variety of free custom fonts and aesthetic stickers. 6. Perfect Sync Between iPhone & iPad (iCloud Support) • Lightly check your quests on your iPhone while on the go, and set up in-depth study plans on your iPad's wide screen at your desk! • Supports real-time syncing between devices via Apple iCloud and Firebase, providing the optimal, seamless study environment anytime, anywhere. 7. Quick Memo to Capture Brilliant Ideas • Provides a "Quick Memo" canvas accessible right from the home screen without any complex steps. • Instantly type and safely store ideas that suddenly pop up while studying, important appointments, or urgent notes. Study On sincerely cheers on your fierce and hardworking days. Download now and start your very own shining study record!

Screenshots

StudyDay4 screens
Study On4 screens

Verdict

The call

StudyDay and Study On are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StudyDay ships an update every 9 days, Study On every 2 weeks. The most recent releases landed on August 17, 2026 and September 19, 2026 respectively.

ScorecardNo meaningful differences
StudyDay versus Study On: the parameters behind the verdict, then further details
ParameterStudyDayStudy On
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size5 MB113 MB
Age rating4+4+
DeveloperJinyoung LeeMoon Su Choi

In-app purchases

None

StudyDay

No in-app purchases

None

Study On

No in-app purchases

Questions

Is StudyDay free?
StudyDay is free to download, with no in-app purchases.
Is Study On free?
Study On is free to download, with no in-app purchases.
Do StudyDay or Study On have ads?
Both StudyDay and Study On show ads.
Which is updated more often, StudyDay or Study On?
StudyDay ships an update every 9 days, and Study On every 2 weeks. Most recently, StudyDay was updated on August 17, 2026 and Study On on September 19, 2026.

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