Comparison

SkiffPlan vs Whale Mark

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

Head to head
About

SkiffPlan

This app helps you manage your schedule, tasks, and habits efficiently. It offers tools like countdown timers, Pomodoro sessions, and calendar integration to boost productivity and goal achievement.

Highlights
  • Schedule management
  • Habit tracking
  • Pomodoro timer
  • Countdown timer
  • Calendar integration
  • Chart analysis
  • iCloud sync
Read full description

SkiffPlan is an efficient schedule management app with integrated habit and time management features, aimed at enhancing your work efficiency and organizational skills. With SkiffPlan, you can easily plan projects, set meeting reminders, organize your schedule, and maintain focus on your tasks. SkiffPlan combines schedule management, calendar, countdown timer, Pomodoro timer, and habit tracking functionalities into one platform, allowing you to manage tasks comprehensively. Whether you're looking to boost work efficiency, manage goals, cultivate better habits, or simplify life, SkiffPlan is your go-to solution. Key Features: Apple Calendar Sync:Seamlessly integrate your Apple Calendar events and add specific details through SkiffPlan. Calendar View: Intuitive interface for viewing your schedule at a glance. Habit Formation:Utilize countdown timers and Pomodoro technique to develop positive habits. Countdown Timer and Pomodoro Timer:** Manage time effectively and improve work efficiency. Chart Analysis:Gain insights into your work efficiency and habits through detailed chart analysis. iCloud Sync: Use locally and easily sync your tasks and schedules across mobile and tablet devices. You may purchase an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 1 month ($2.99), 3 month ($7.99) and 1 year($17.99) durations • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase • Privacy policy:https://www.aladays.com/PrivacyPolicy_en.html • Terms of use:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Whale Mark

Track your reading progress for physical books with this e-bookmark application. Log your current page, add notes, and manage your library of paperbacks. Stay organized and never lose your place again.

Highlights
  • Track reading progress for paper books
  • Log current page
  • Add notes to books
  • Manage book library
  • E-bookmark functionality
Features
Read full description

Whale Mark is an app for recording the reading progress of paper books. [Privacy Policy and Terms of Use] - Privacy Policy: https://medivhstudio.com/projects/whale-mark/privacy-policy.html - Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ [Contact Us] Any comments or questions can be sent to medivhstudio@163.com.

Screenshots

SkiffPlan4 screens
Whale Mark4 screens

Verdict

The call

The clearest difference is update cadence: SkiffPlan at every 3 days against Whale Mark's every 4 months. On price, ads, in-app purchases and monetization model 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. SkiffPlan sells 3 in-app purchases, starting at $2.99 per month and Whale Mark sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SkiffPlan ships an update every 3 days, Whale Mark every 4 months. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
SkiffPlan versus Whale Mark: the parameters behind the verdict, then further details
ParameterSkiffPlanWhale Mark
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 3 days — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.1 — better17.0
Further details — not scored
Size21 MB2 MB
Age rating12+4+
DeveloperShenZhen Shidaimi Technology Co.,Ltd柱 杨

Customer experience

SkiffPlan

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Whale Mark

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

SkiffPlan

Subscriptions3
  • Monthly$2.991 Month
  • Quarterly$7.993 Months
  • Annual$17.991 Year
3 purchases

Whale Mark

Subscriptions2
  • Monthly Membership$0.991 Month
  • Annual Membership$2.991 Year
One-time1
  • Lifetime Membership2 variants$3.99

Questions

Is SkiffPlan free?
SkiffPlan is free to download, with in-app purchases available.
Is Whale Mark free?
Whale Mark is free to download, with in-app purchases available.
Do SkiffPlan or Whale Mark have ads?
Neither SkiffPlan nor Whale Mark shows ads.
Which is updated more often, SkiffPlan or Whale Mark?
SkiffPlan ships an update every 3 days, and Whale Mark every 4 months. Most recently, SkiffPlan was updated on October 3, 2026 and Whale Mark on October 11, 2026.

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