Comparison

OneDay vs Diary Notes

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

Head to head
About

OneDay

This app provides a private space to record daily thoughts, emotions, and life events. It offers a beautiful interface with customizable themes and fonts, allowing you to enrich entries with photos and organize them with labels. Securely back up and sync your journal across devices.

Highlights
  • Simple and beautiful design
  • Add photos inline
  • Colorful themes and fonts
  • iCloud synchronization and backup
  • Search diary by label
  • One-click sharing
Features
Read full description

OneDay is a simple and friendly diary. You can track life's progress and log a little bit about each day. Look back at the emotions and the opinions and even mundane aspects of your life. Write out all your emotions in a space and no one will see. == Key Features == · Simple and beautiful design: beautiful design, write down your thoughts · Add photo inline: support for inserting pictures in the diary, you can delete or add pictures · Colorful Themes: Colorful diary themes change · All Kinds of Fonts : Many different kinds of fonts · Synchronization and backup: Support multi-version Backup & synchronization to iCloud · Multiple backups: 10 historical backup data to prevent data from being overwritten by multiple devices · Support one-click sharing: diary can generate pictures, and then pictures can be shared to Facebook, Twitter, Instagram and so on · Search diary by label: Support diary classification by label, and quickly find diary by label. Subscriptions: - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - The account will be charged for renewal within 24-hours before the end of the current period. The cost depends on the selected plan. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Privacy Policy: https://ice100.github.io/app/OneDay/privacy Terms of Use: https://ice100.github.io/app/OneDay/term Welcome to feedback your needs to us ^_^ helpforapp1024@gmail.com

About

Diary Notes

Features
Read full description

◯ Use it like a memo pad to keep a diary - You don't have to write in your diary every day because no one will see it! - Includes photo, video, and recording functions. Tweet as much as you like. ◯ Minimize complex operations and select only essential features - We've created a simple design to avoid complicated operations. - The app is intuitive and easy to use, so anyone can enjoy it. ◯ Easily write down your everyday feelings - For those who just want to jot down their current feelings. - For those who want to organize their thoughts. - For those who want to vent their stress.

Screenshots

OneDay4 screens
Diary Notes3 screens

Verdict

The call

The clearest difference is update cadence: Diary Notes at every 4 days against OneDay's every 4 weeks. OneDay's advantage is iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and device support 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. OneDay sells 3 in-app purchases, starting at $0.99 per month and Diary Notes sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OneDay ships an update every 4 weeks, Diary Notes every 4 days. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
OneDay versus Diary Notes: the parameters behind the verdict, then further details
ParameterOneDayDiary Notes
PriceFreeFree
Rating4.7 (95 ratings) — better—
Positive reviews91.7% of reviews—
Number of ratings95 — better—
Update frequencyEvery 4 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size28 MB171 MB
Age rating4+4+
Developer秋宏 陈tadahiro mori

In-app purchases

3 purchases

OneDay

Subscriptions3
  • Diary Journal - 1 Mouth$0.991 Month
  • Diary Journal - 6 Mouths$2.496 Months
  • Diary Journal - 1 Year3 Days trial$4.491 Year
1 purchases

Diary Notes

Subscriptions1
  • 月額プラン$0.991 Month

Questions

Is OneDay free?
OneDay is free to download, with in-app purchases available.
Is Diary Notes free?
Diary Notes is free to download, with in-app purchases available.
Do OneDay or Diary Notes have ads?
Neither OneDay nor Diary Notes shows ads.
Which is updated more often, OneDay or Diary Notes?
OneDay ships an update every 4 weeks, and Diary Notes every 4 days. Most recently, OneDay was updated on October 20, 2026 and Diary Notes on October 9, 2026.

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