Calflow vs Decendium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
Decendium
This habit tracker uses 10-day cycles, focusing on tending up to three habits daily. Watch a plant grow as you achieve your goals, offering a fresh start each cycle and rewarding resilience over perfection.
- 10-day habit sprints
- Up to three daily habits
- Plant growth visualization
- Earn sunlight for rewards
- Seven unique plant species
- Resilience over perfection
- Cozy, non-shaming interface
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Ten days. One plant. Decendium is a habit tracker built around 10-day "sprints." Pick a plant species at the start of each sprint. Tend up to three habits a day. Watch your plant grow one stage at a time — from a freshly turned pot to a full bloom on day 10. Decendium (Latin for a ten-day period) is for the gardener in you. The one who has tried every habit app and abandoned each within weeks. The one who wants a clean slate every ten days instead of an unforgiving forever-streak. — What makes Decendium different — • Three goals, not infinity. The constraint is the point — fewer habits, deeper roots. • Sunlight, not streaks. Earn sunlight by tending your habits. Spend it on new plant species, gardener avatars, and backdrops. Or use it to mend a missed day. Resilience over perfection. • Seven plant species. Sunflower, Strawberry, Lavender, Cherry blossom, Monstera, Bird of Paradise, and Mushroom cluster. Each with its own visual personality and growth arc. • A ten-day cycle that resets gracefully. Every sprint is a clean slate. Pull a habit that isn't working. Try something new. The plant is the trophy. — Decendium Patron — For the collector in you. Patron unlocks all 7 plant species, all 6 critter avatars (cat, fox, dog, pineapple, plus Patron-only Boston terrier and mushroom-person), and every backdrop including the Patron-only tier (Moonlight, Forest grove). $2.99/month or $24.99/year. Cancel anytime. Your earned sunlight, sprints, and plants are always yours — whether you're a Patron or not. — Cozy, restrained, designed — No streaks shaming. No leaderboards. No reminders that you missed yesterday. Just a quiet daily practice and a plant that grows when you tend it. Start small. Grow something. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ratings volume: Calflow at 129 against Decendium's 2. Calflow also leads on device support (4 vs 2). On price, rating, ads and in-app purchases 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
Both are free to download. Calflow sells 3 in-app purchases, starting at $3.99 per month and Decendium sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Calflow against 5.0 for Decendium. That said, the two scores are not equally well evidenced: Calflow has 129 ratings behind it against 2, so its average is the more settled of the two.
| Parameter | Calflow | Decendium |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (129 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 88.9% of reviews | — |
| Number of ratings | 129 — better | 2 |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 183 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Kyovan Ltd. | Tianyu Luo |
Customer experience
Calflow
Decendium
Bugs and requests
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
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- 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
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- 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
Decendium
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calflow
- Monthly plan$3.991 Month
- Annual plan7 Days trial$12.991 Year
- One-time purchase$37.99
Decendium
- Decendium Patron - Monthly$2.991 Month
- Decendium Patron — Annual$24.991 Year









