EVlog vs DoBuff
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EVlog
This app visualizes your calendar data through charts and graphs, offering multi-dimensional analysis of your time allocation. It also includes a timing mode to track specific activities and record them directly into your system calendar. Your privacy is protected as all data remains within your device's calendar.
- Visualize calendar data with charts
- Multi-dimensional time analysis
- Task timing and recording
- Privacy protection
- System calendar integration
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Calendarlog is a time management and recording app. Compared to other management apps, Calendarlog stands out for its extreme simplicity and power. And the reason behind all of this is that it is built entirely on top of the system's calendar. Leveraging the inherent strength of the system calendar, Calendarlog primarily focuses on two things: visualizing the calendar and supporting calendar entries through timing. If you're already using a calendar, then Calendarlog is definitely what you need. 1. Visualize Calendar Data: The Calendarlog app presents the data from the system calendar in intuitive line graphs, bar charts, and pie charts, allowing you to easily understand your time allocation. 2. Multi-dimensional Analysis: Based on your preferences, you can analyze data on a daily, weekly, or monthly basis, gaining deeper insights into patterns and trends in your time utilization. 3. Timing Mode: The Calendarlog app supports a timing feature, enabling you to track the time spent on specific tasks or activities by setting timers. The recorded data can be directly written into the system calendar for easy reference and management. 4. Privacy Protection: Since the data is completely stored in the system's calendar and only accessed during visualization, Calendarlog itself does not store any data. Your privacy is 100% guaranteed. WEB:https://calendarlog.app/ term of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Email:calendar@metaorder.ltd
DoBuff
Enhance your reminders and calendar with powerful tools for time management, progress tracking, and goal setting. Visualize your tasks on a timeline, create unique weekly and yearly plans, and utilize focus timers with progress bars. Gain insights with trend statistics and countdowns.
- Timeline view for tasks
- Weekly, monthly, and yearly planning
- Focus timer with progress bar
- Trend statistics and heatmaps
- Countdown timers
- Calendar integration
- Widgets
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“DoBuff” is primarily built around Reminders and Calendar, providing core features such as time management, progress tracking, goal management, and more. “DoBuff” is designed to enhance Reminders and Calendar with a range of powerful additional features, helping you use them more effectively. “DoBuff” started as a collection of tools I built for my own use with Reminders and Calendar. It was developed around my personal needs and is now available for anyone with similar needs. If you are also a Reminders or Calendar user like me, “DoBuff” may be a great fit for you. Core features and goals (supported for both Reminders and Calendar events): 1. Display tasks and events on a timeline. 2. Unique weekly, monthly, and yearly planning views. 3. Two separate tag systems that can be used independently or synced with Reminders. 4. Focus timers based on Reminders for better time management. 5. Progress bars based on Reminders, with lists serving as progress trackers for goals. 6. Completion and time-spent statistics for Reminders lists. 7. Trend analytics, including tag-based focus time statistics, list tracking, yearly heatmaps, time paths, footprint maps, and more. 8. Countdown support for Reminders. 9. Mark Reminders as abandoned or postponed. 10. Calendar integration, including reading events and writing focus sessions to Calendar. 11. Counting and count tracking. 12. Enhancements available for Reminders are also supported for Calendar events. 13. Export and back up Reminders. 14. Reminder countdowns with support for system alarm countdowns. 15. Note templates for quickly adding notes. 16. Add notes to lists. 17. A range of widgets, including Focus widgets, Calendar widgets, Goal Tracking widgets, Today widgets, and more. 18. Automatic focus timing. 19. Favorites for Reminders and Calendar events. 20. Enhanced global search. 21. Apple Watch version. 22. Turn Reminders into anniversary reminders. 23. Pomodoro focus timer support. 24. Health and sleep data integration, including automatic sleep focus tracking. 25. Energy and focus management. 26. Energy level management. 27. Daily, weekly, monthly, and yearly records and summaries. 28. Daily mood tracking. 29. List migration. And several other feature enhancements. For Calendar events, DoBuff also provides workflow-based event management, such as marking events as completed or abandoned. These are only some of the features currently available in “DoBuff”. More features are being organized and will be released gradually. *Membership Subscription: Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal price will be confirmed at that time. Subscriptions can be managed by the user. Auto-renewal can be turned off after purchase by going to the user’s App Store account settings. 【Feedback & Support】 If you have any questions or issues while using the app, please contact us at: liyubelief@iCloud.com Terms of Use: https://docs.qq.com/doc/DSFZOeURmQk1McGVu Privacy Policy: https://docs.qq.com/doc/DSFBQSWJwcERmRUhB
Screenshots
Verdict
The clearest difference is rating: DoBuff at 4.8 against EVlog's 1.0. DoBuff also leads on ratings volume (39 vs 1) and review sentiment (100% vs 85%). On price, update cadence, 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. EVlog sells 1 one-off in-app purchase and DoBuff sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
DoBuff holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: DoBuff has 39 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 85% of EVlog's written reviews are positive against 100% of DoBuff's.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on August 29, 2026 and September 5, 2026 respectively.
| Parameter | EVlog | DoBuff |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.8 (39 ratings) — better |
| Positive reviews | 84.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 39 — better |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | MetaOrder Co., Ltd. | 宇 李 |
Customer experience
EVlog
DoBuff
In-app purchases
EVlog
- lifetime pro$5.99
DoBuff
- 月会员$0.991 Month
- 年会员$2.991 Year
- 永久会员$6.99









