Comparison

Hours Time Manager vs Simple Study Stamp

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

Head to head
About

Hours Time Manager

Features
Read full description

Hours is a study motivation app optimized for the rigorous Japanese exam industry. It's more than a simple Pomodoro timer — it helps you visualize your study habits, connect with others' efforts, and stay motivated. Use the study timer to precisely record how long you spend on each subject and clearly see your study patterns. The shared timeline displays in real time how others with similar goals are studying, inspiring you without the need for chat or direct communication. Our analysis tools graph how your time is allocated across subjects and periods, guiding you in creating effective study plans based on your own progress. The interface is intuitive and beautiful so you can concentrate on studying without distractions. The supportive community encourages you to keep going at your own pace, feeling the positive energy of others rather than unhealthy comparisons. Because everyone is working hard, you can too. Build your study habits with Hours and take a step closer to your goals.

About

Simple Study Stamp

Features
Read full description

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.

Screenshots

Hours Time Manager4 screens
Simple Study Stamp4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Study Stamp at none against Hours Time Manager's 2. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hours Time Manager sells 2 in-app purchases, starting at $1.99 per month. Simple Study Stamp asks for nothing beyond the download.

UpkeepUpdate frequency

Hours Time Manager ships an update every 2 weeks, Simple Study Stamp every 10 days. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

Scorecard1 real difference · 5 level
Hours Time Manager versus Simple Study Stamp: the parameters behind the verdict, then further details
ParameterHours Time ManagerSimple Study Stamp
PriceFreeFree
Update frequencyEvery 2 weeksEvery 10 days — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size192 MB10 MB
Age rating4+4+
DeveloperQOOQ inc.Futoshi Akahoshi

In-app purchases

2 purchases

Hours Time Manager

Subscriptions2
  • Monthly Subscription$1.991 Month
  • プレミアム会員年間サブスクリプション(16%お得)$19.991 Year
None

Simple Study Stamp

No in-app purchases

Questions

Is Hours Time Manager free?
Hours Time Manager is free to download, with in-app purchases available.
Is Simple Study Stamp free?
Simple Study Stamp is free to download, with no in-app purchases.
Do Hours Time Manager or Simple Study Stamp have ads?
Both Hours Time Manager and Simple Study Stamp show ads.
Which is updated more often, Hours Time Manager or Simple Study Stamp?
Hours Time Manager ships an update every 2 weeks, and Simple Study Stamp every 10 days. Most recently, Hours Time Manager was updated on September 9, 2026 and Simple Study Stamp on September 12, 2026.

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