Sectograph vs SparkDay
We give Sectograph and SparkDay the same GPA: 3.0 out of 4.0. Sectograph grades higher on value for money. SparkDay grades higher on the free plan. They get the same grade on features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Sectograph
Circular day planner that maps calendar events onto a clock face
SparkDay
Daily planner, step tracker and habit tracker with AI roast reports
How we grade them
| 3.0GPASectographVery good | 3.0GPASparkDayVery good | |
|---|---|---|
| Value for money | A$3.99 once on iPhone and iPad, with no in-app purchases after that. A typical planner charges about $8 every month. On Android the app is free, with optional extras from $1.99 to $99.99 that the Play listing doesn't itemise. | BPro is $49.99 a year, about $4.17 a month, or $6.99 monthly. That's a little under the middle for planners. What it buys is modest: no ads, 25 leaderboard friends, premium sounds and clock faces, 5 AI roasts a day and AI daily reports. |
| Free plan and trial | BOn Android it's free to install, with the dial, a home screen widget and three widget themes. What the paid extras unlock isn't spelled out. On iPhone there's nothing free at all: it's $3.99 before you see it. | AThe planner, step tracker, journal, habits, reminders and focus timer are all free, with no account to make. You'll see ads, and the leaderboard stops at 3 friends. Most people could stay right here. |
| Features | BIt does one thing and does it fully: a 12 or 24-hour dial with countdowns, the gaps between events, a home screen widget and a Wear OS app. But it only shows what's already on your calendar, it isn't a to-do list, and Outlook support is still marked beta. | BA 24-hour timeline with alarms, step counts with leaderboards, habit streaks, a journal with voice-to-text in 15 languages, and a Pomodoro timer with 50 music tracks. Lots packed in. But neither the site nor the App Store listing mentions syncing with outside calendars. |
| Ease of use | BNo App Store rating on record, so a B is our ceiling. There's very little to set up, since it reads the calendars already on your phone. If you can read a clock, you can read this. | BNo App Store rating on record, so a B is our ceiling. There's no account to set up, so you can open it and start planning. The free version does show ads while you do. |
| Platforms and integrations | CAndroid phones, iPhone and iPad, plus Wear OS watches on the Android side. That's it: no web or desktop version. It reads Google Calendar and your device's own calendars, with Outlook in beta. | CiPhone and Android phones only. There's no web or desktop version, and the App Store listing is for iPhone, not iPad. The one connection on record is Health Connect. |
| Best for | seeing your calendar as a clock face | a planner and step counter that teases you |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Sectograph and SparkDay. How we grade
Where they differ
- Sectograph starts at $3.99 one-time on iOS; Android in-app purchases $1.99 to $99.99 per item. SparkDay starts at $49.99 per year (about $4.17 per month), or $6.99 billed monthly.
- Sectograph also covers calendar.
- SparkDay also covers tasks, Pomodoro timer, focus music, habit tracking and mood tracking.
At a glance
| Sectograph | SparkDay | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $3.99 one-time on iOS; Android in-app purchases $1.99 to $99.99 per item | $49.99 per year (about $4.17 per month), or $6.99 billed monthly |
| Free plan | The Android app is free to install from Google Play and includes the clock-face planner, a home screen widget and three free widget themes. | Core features are free with ads and no account: activity planning, step tracking, journal, habits, reminders, focus timer and decision helper, with up to 3 leaderboard friends. |
| Free trial | None listed | None listed |
| iOS | ||
| Android | ||
| Made by | Roman Blokhin (Laboratory 27) | Apratim Sahu |
| Price read from | play.google.com | apps.apple.com |
| Checked | Oct 5, 2026 | Oct 9, 2026 |
Who each one suits
Sectograph
- People who read an analog clock faster than a list of events
- Android users who want their schedule on a widget or Wear OS watch
- Seeing free time between meetings and the time left in the current one
SparkDay
- People who want a planner, step counter and habit tracker in one app
- Friends who motivate each other with step competitions
- Users who respond to humorous accountability
Worth knowing
Sectograph
- It is not a to-do list. Its Google Play listing describes it as a planner that visualizes what is already on your calendar.
- The Android app is free with in-app purchases the listing does not itemize, while the iOS app costs $3.99 up front.
- Outlook calendar support is labelled beta on Android, and there is no web or desktop version.
- The vendor's website is a single page with store links, so feature and price details come from the store listings.
SparkDay
- The free version shows ads; removing them takes Pro at $6.99 a month or $49.99 a year on the US App Store.
- It is a phone app: the App Store listing is for iPhone only, and the site offers no web or desktop version.
- AI daily reports, premium sounds, music and clock faces, and more than 3 leaderboard friends are limited to Pro.
- Neither the site nor the App Store listing mentions syncing with outside calendars such as Google Calendar.
Key features
Sectograph
- Clock-face timeline
- The day is drawn as a 12-hour dial, or 24-hour if you prefer, with each event placed at the hours it happens and sized to its duration.
- Free time and countdowns
- Sectograph calculates the gaps between events and the time from now until the next one, and updates the view as time passes.
- Reads existing calendars
- On Android it reads Google Calendar and the device's local calendars. Microsoft Outlook calendar support is labelled beta.
- Home screen widget
- A widget keeps the dial on the home screen, refreshing once a minute. Tapping a sector opens event details and quick actions.
- Wear OS support
- The Android version includes a watch app with an interactive widget, a tile, a large complication and a separately installed watch face.
- Zoom and grid views
- Options on Android include a 24-hour mode, zooming the dial to between 1 and 12 hours, and month and day grid views.
SparkDay
- 24-hour timeline planner
- Activities and tasks are placed on a visual 24-hour timeline, with reminders, full-screen alarms and routines that take the sleep schedule into account.
- Step tracker and leaderboards
- Counts steps with daily, weekly and monthly insights and 8 achievement tiers, and ranks friends on step leaderboards: 3 friends on the free plan, 25 on Pro.
- AI Roast Mode and reports
- 30 AI personas write humorous feedback based on the user's real activity data, with shareable roast cards. Pro includes 5 roasts per day and AI-powered daily reports.
- Focus timer and sounds
- Pomodoro focus sessions with a full-screen mode, 50 focus music tracks and 60 ambient sounds that can be mixed and put on a sleep timer.
- Habit tracker
- Daily habit streaks on a visual calendar, with goal-based and metric tracking and a completion history.
- Journal and voice notes
- A journal with mood tracking, gratitude entries, searchable notes and voice-to-text in 15 languages.
Plans
Sectograph
Android app$0
Free to install from Google Play, with the clock-face planner, home screen widget and Wear OS app.
Android in-app purchases$1.99 to $99.99
per item, as shown on the US Google Play listing
Optional purchases inside the Android app. The listing gives the price range only and does not say what each item unlocks.
iPhone and iPad app$3.99
one-time purchase
Paid download on the US App Store, which lists no in-app purchases for it.
SparkDay
Free$0
Activity planning, step tracking, journal, habits, reminders and focus timer, with ads and up to 3 leaderboard friends.
SparkDay Pro Monthly$6.99
per month
Removes ads and adds 25 leaderboard friends, premium sounds, music and clock faces, 5 AI roasts per day and AI daily reports.
SparkDay Pro Yearly$49.99
per year
The same Pro features billed annually, as listed among the in-app purchases on the US App Store.
Ways to pay less
Sectograph
No public discounts listed.
SparkDay
- Annual discount
About 40% less with the yearly plan
The US App Store lists SparkDay Pro Yearly at $49.99 and Monthly at $6.99, so a year paid at once costs about 40% less than twelve monthly payments ($83.88).
