Comparison

iHour vs Calflow

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

Head to head
About

iHour

Plan and track your time spent on developing habits and mastering skills. Set daily reminders, use a countdown timer, and plan up to ten years ahead. Unlock achievements to stay motivated on your journey to mastery.

Highlights
  • Daily activity tracking
  • Long-term planning (up to 10 years)
  • Daily reminders and countdown timer
  • Progress statistics and visualization
  • Over 80 unlockable achievements
  • Cloud synchronization
Features
Read full description

"iHour" helps you plan & track your time spending on habits. You can record things like Play Guitar, Read Book, Coding, Running etc. The app supports daily reminder, countdown timer, up to 10 years long-term planning. Special designed Achievements help you achieve your goal. 10000 Hours to Master a Skill. =Special Feature= · Daily Tracker: Record your daily activities by hours & minutes · Cloud Sync · Task Planner & Reminder · Time Statistics: Visualize your efforts · Achievements: 80+ Achievements are waiting for you · Share with your friends —————— About the In-App Subscription: We provide "iHour Pro · Monthly Membership" for $0.49 / month. Your subscription will be billed through your Apple ID account after purchase. Subscription automatically renews unless you cancel it at least 24 hours before the end of your billing cycle. Renewal cannot be cancelled. Privacy Policy: https://clover.ly/privacy Terms: https://m.icity.ly/tos

About

Calflow

This app integrates with your existing iOS Reminders and Calendars to help you track how you spend your time. It offers features for daily planning, time tracking, and goal setting, providing insights into your productivity within the Apple ecosystem.

Highlights
  • 2-way sync with iOS Reminders & Calendar
  • Time tracking for reminders and events
  • Time distribution insights
  • Powerful tag system for filtering
  • Goal and habit tracking
  • Apple Health and app usage sync
Features
Read full description

If you’re using Apple Reminders and iOS Calendar/ Google Calendar in your workflow, and you wonder how you spend your time, tasks, daily activities, etc, it’s for you. Calflow is a powerful time-tracking planner based on iOS Reminders & Calendar, helping you keep track of your day and stay productive within the Apple ecosystem. Daily & Weekly Planner ◆ 2-way sync with iOS Reminders & Calendar (Free) ◆ Use Spaces to separate personal and work tasks, helping you declutter your schedule and stay focused Streamline Time-tracking into your Apple Workflow ◆ Track how much time you spend on your Reminders & events: - Reminders: Auto-populate time entries in Apple Calendar - Events: Auto-update your planned event details in Apple Calendar Apple Calendar Time Insights ◆ Also supports Google Calendar ◆ Track your time distribution across day/week/month/year Powerful Tag System ◆ Create smart tags to filter your calendar event entries, and learn about their activity across day/week/month/year ◆ Create groups to analyze time from multiple perspectives Goals, Habits Tracking ◆ Track goals, habits based on your iOS Reminders & Calendars to help ensure your time align with your goals Track anything and sync them to iOS Calendar ◆ Apple Health sync (mindful minutes, sleep time, workout time) ◆ App usage time tracking (via Shortcuts) ◆ Daily activities (via tracker widgets) Need help or have ideas to share? We’re always here: contact@calflow.app Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://calflow.app/privacypolicy/

Screenshots

iHour4 screens
Calflow4 screens

Verdict

The call

The clearest difference is update cadence: Calflow at every 10 days against iHour's every 6 weeks. iHour's advantage is ratings volume (816 vs 131) and iOS requirement (13.0 vs 17.0). On price, rating, review sentiment and ads 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. iHour sells 6 in-app purchases, starting at $0.49 per month and Calflow sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for iHour against 4.9 for Calflow. That said, the two scores are not equally well evidenced: iHour has 816 ratings behind it against 131, so its average is the more settled of the two. Written reviews are what separate them: 90% of iHour's written reviews are positive against 89% of Calflow's.

UpkeepUpdate frequency

iHour ships an update every 6 weeks, Calflow every 10 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
iHour versus Calflow: the parameters behind the verdict, then further details
ParameteriHourCalflow
PriceFreeFree
Rating4.8 (816 ratings)4.9 (131 ratings) — better
Positive reviews90.5% of reviews — better88.9% of reviews
Number of ratings816 — better131
Update frequencyEvery 6 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, Mac, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size243 MB183 MB
Age rating4+4+
DeveloperiDaily Corp.Kyovan Ltd.

Customer experience

iHour

All ratings816 ratings
Positive96.2%
Neutral1.5%
Negative2.3%
Written reviews462 reviews
Positive90.5%
Neutral3.9%
Negative5.6%

Calflow

All ratings129 ratings
Positive98.4%
Neutral0.8%
Negative0.8%
Written reviews108 reviews
Positive88.9%
Neutral4.6%
Negative6.5%

User reviews

iHour

From 816 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Efficient time tracking
  • 💎 Cute and motivating design
  • 🎯 Helpful for productivity and focus
  • 🎮 Gamification elements are engaging

Room to improve

  • 🐛 Occasional performance issues (e.g. overheating, crashes)
  • 🔍 Limited customization options
  • 📊 Lack of detailed data export/analysis features
  • 🔕 Intrusive notifications/sounds
  • 🌙 No dark mode option

Calflow

From 131 App Store ratings

What we love

  • ⏱️ Excellent time tracking with automatic logging
  • 📱 Seamless cross-device synchronization (iPhone, iPad, Mac, Apple Watch)
  • 📅 Perfect integration with Apple Calendar and Reminders
  • 🎯 Comprehensive goal-setting and insights features
  • 🧩 Simple, intuitive user interface with low friction

Room to improve

  • 🐛 Timer synchronization issues across devices
  • 🐛 Confusing insights calculation (double-counting existing calendar events)
  • 🐛 Apple Watch complications not fully functional
  • 🌙 No dark mode support
  • 📱 iPad lacks some features available on iPhone

Bugs and requests

iHour

Reported bugs

3 issues
  • Apple Watch version has sync issues
  • Countdown timer stops when screen is locked
  • Time records not always accurate

Requested features

5 requests
  • Add more detailed time tracking (e.g. down to the second)
  • Improve data visualization and analytics
  • Introduce a desktop/iPad version
  • Allow more customization of UI and sounds
  • Implement a dark mode option

Calflow

Reported bugs

11 issues
  • Timer doesn't sync across devices (iPhone to iPad/Mac)
  • Live Activity not showing on iPad when timer active
  • Apple Watch timers not accessible on other devices
  • Widget display showing only black and white screen
  • Insights double-counting time on existing calendar events
Show 6 more
  • Goals feature sometimes fails to record correctly
  • iPad reminders list not syncing with iPhone
  • Timer in notification center and widget not syncing
  • iPad doesn't show timer notifications in notification center
  • Apple Watch connectivity issues after paid subscription activation
  • Mac and iPad timer not showing when started on iPhone

Requested features

27 requests
  • Dark mode support
  • Mac menu bar timer widget
  • Multiple simultaneous timers on iPhone
  • Larger font size options
  • Ability to copy and paste calendar events
Show 22 more
  • Custom goal cadences (not just daily/weekly/monthly)
  • Daily focus note area (like weekly focus)
  • Hashtag support in notes for better app integration
  • Apple Watch complications
  • Faster widget refresh rates
  • Drag and drop support for weekly plans
  • Collaboration/sharing features
  • Data export to CSV/Excel format
  • URL field for events and tasks
  • Callback URL support
  • Notification/reminder alerts for events
  • Milestone and skill tree features
  • Import data from other time tracking apps
  • Japanese language support
  • Custom day start time for analytics
  • Notebook/note-taking integration
  • Customizable todo background colors
  • Reminders list and tags binding
  • Mac automation scheduling
  • Website usage tracking on Mac
  • Ambient sounds and tick sounds for focus mode
  • Collaborative task management

In-app purchases

6 purchases

iHour

Subscriptions1
  • iHour Pro - Monthly Membership7 Days trial$0.491 Month
One-time5
  • 咖啡$2.99
  • iHour Pro$3.99
  • 银币$5.99
Show 2 more
  • 金币$14.99
  • Coffee for Everyone$29.99
3 purchases

Calflow

Subscriptions2
  • Monthly plan$3.991 Month
  • Annual plan7 Days trial$12.991 Year
One-time1
  • One-time purchase$37.99

Questions

Is iHour free?
iHour is free to download, with in-app purchases available.
Is Calflow free?
Calflow is free to download, with in-app purchases available.
Which has better reviews, iHour or Calflow?
Calflow is rated higher. iHour averages 4.8 out of 5 from 816 ratings, while Calflow averages 4.9 from 131 ratings.
Do iHour or Calflow have ads?
Neither iHour nor Calflow shows ads.
Which is updated more often, iHour or Calflow?
iHour ships an update every 6 weeks, and Calflow every 10 days. Most recently, iHour was updated on October 26, 2026 and Calflow on October 27, 2026.

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