Comparison

Whale Mark vs OneThing

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

Head to head
About

Whale Mark

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.

About

OneThing

This app helps you stay focused by displaying your most important task on your home or lock screen. It simplifies your life by bringing order through focusing on one priority at a time.

Highlights
  • Display crucial item on home/lock screen
  • Stay focused and efficient
  • Simple input
  • Visible everywhere
  • Brings order to life
Features
Read full description

OneThing - Focus on what matters most, right now. This sleek and powerful app allows you to capture and display the most crucial item in your life at any given moment. Whether on your home screen or lock screen, OneThing ensures your priority is always in sight, helping you stay focused and efficient. Simple input, visible everywhere - bringing order to your life with just one thing at a time --- After confirming the purchase and payment, your iTunes account will automatically renew the subscription. The Apple iTunes account will charge within 24 hours before the expiration date. Once the payment is successful, the subscription period will extend by one subscription period. To cancel the renewal, please manually turn off the auto-renewal feature in the iTunes/AppleID settings at least 24 hours before the current subscription period ends. During the trial period, if the iTunes account does not cancel the subscription, it will automatically start the subscription and charge at the end of the trial period. Any unused trial period will be forfeited after purchasing the subscription. This service allows you to choose whether to cancel; if you choose not to cancel, the renewal service for the next billing period will start automatically. private privacy: https://merciful-sugar-3e6.notion.site/Privacy-Policy-b0e24b6beb074420ae88ec07239d1c5f?pvs=74 term of service: https://merciful-sugar-3e6.notion.site/Terms-of-Service-ffa8642d0e864e22b1dcd5fb06870978

Screenshots

Whale Mark4 screens
OneThing4 screens

Verdict

The call

The clearest difference is price: Whale Mark at Free against OneThing's $0.99. OneThing's advantage is update cadence (fortnightly vs every 4 months). On ads, in-app purchases, device support and iOS requirement 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

Whale Mark is free to download; OneThing costs $0.99 up front. Whale Mark sells 3 in-app purchases, starting at $0.99 per month and OneThing sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Whale Mark ships an update every 4 months, OneThing fortnightly. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

Scorecard2 real differences · 8 level
Whale Mark versus OneThing: the parameters behind the verdict, then further details
ParameterWhale MarkOneThing
PriceFree — better$0.99
Rating—1.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size2 MB2 MB
Age rating4+4+
Developer柱 杨定荣 郭

Customer experience

Whale Mark

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

OneThing

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

3 purchases

Whale Mark

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

OneThing

One-time1
  • buy the author a cola$0.99

Questions

Is Whale Mark free?
Whale Mark is free to download, with in-app purchases available.
Is OneThing free?
OneThing costs $0.99, and also offers in-app purchases.
Do Whale Mark or OneThing have ads?
Neither Whale Mark nor OneThing shows ads.
Which is updated more often, Whale Mark or OneThing?
Whale Mark ships an update every 4 months, and OneThing fortnightly. Most recently, Whale Mark was updated on September 25, 2026 and OneThing on September 20, 2026.

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