Comparison

Otona Calendar vs Tree人気スケジュール帳 仕事のスケジュール共有で予定管理

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

Head to head
About

Otona Calendar

This straightforward scheduling app syncs with your existing iOS calendars, including iCloud and Google. It offers event templates, search functionality, and notifications without requiring complex setup. An optional one-time purchase removes advertisements.

Highlights
  • Event templates
  • Move and copy events
  • Find free time
  • Search events
  • Create custom calendars
  • Event notifications
  • Passcode lock
Features
Read full description

Otona Calendar is a simple schedule app you can use right after installing it. We left out everything extra. The app uses the calendars already saved on your iPhone, so if you switch from another calendar app, your events are all here with no setup. Calendars synced through iOS, such as iCloud and Google, show up as they are. [What you can do] - Templates for events you add often - Move and copy events - Find free time - Search events - Create your own calendars - Event notifications - Passcode lock Remove ads with a one-time purchase. - URL scheme: otonaCal://

About

Tree人気スケジュール帳 仕事のスケジュール共有で予定管理

This app offers a simple and intuitive calendar for managing your schedule. Easily color-code appointments, view your week at a glance, and navigate smoothly through dates. A premium plan unlocks ad-free usage, CSV export, and unlimited customization options.

Highlights
  • Color-coded appointments
  • One-week list display
  • Smooth vertical scrolling
  • Easy detail screen
  • CSV export (premium)
  • Unlimited favorite colors (premium)
  • Unlimited templates (premium)
Features
Read full description

Handy calendar for free ! ! There are two types of 1 -week display , month display . You can use immediately even those who are not familiar with the schedule management so simple . 【Characteristic】 ● color-coded appointments You can change the color for each plan . ● Easy-to-read display for one week List the schedule of the week . Things to do this week you can see at a glance . ● smooth vertical calendar A vertical scroll to the desired day you can easily move . You can return to the first position as soon as you press the " Back to today " button even when overdone . ● easy to see the detail screen When you tap the scheduled list of the day will display the date. ■■■ About the premium plan ■■■ * Premium plan is 280 yen per month * Premium plan is automatically updated every month * Payment will be made via your Apple ID * Subscriptions are managed by the user and can be turned off from account settings * Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal * It will continue automatically unless canceled more than 24 hours before the next subscription To cancel your subscription: 1. Open the Settings app and tap your name. 2. Tap "Subscriptions". 3. Select this app’s subscription. 4. Tap "Cancel Subscription". The premium plan offers the following features 1. Hide the ad Hide the ad and the screen is spacious 2. CSV export Output to a format that can confirm the schedule in Excel 3. Unlimited number of favorite colors You can add an unlimited number of scheduled colors to your favorites 4. Unlimited number of templates Create unlimited number of templates ■ Terms of Use https://hapilf.com/terms.html ■ Privacy Policy https://hapilf.com/privacy.html ■ フォントライセンス * 瀬戸フォント SIL Open Font License 1.1 (http://scripts.sil.org/OFL) © Nonty.net * Rounded Mgen+ SIL Open Font License 1.1 (http://scripts.sil.org/OFL) © 2015 自家製フォント工房, © 2014, 2015 Adobe Systems Incorporated, © 2015 M+ FONTS PROJECT * マメロン フリーフォント © もじワク研究 * たぬゴ SIL Open Font License 1.1 (http://scripts.sil.org/OFL) © たぬきフォント

Screenshots

Otona Calendar4 screens
Tree人気スケジュール帳 仕事のスケジュール共有で予定管理4 screens

Verdict

The call

The clearest difference is rating: Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 at 4.8 against Otona Calendar's 4.1. Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 also leads on review sentiment (77% vs 42%) and ratings volume (168 vs 10). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Otona Calendar sells 1 one-off in-app purchase and Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 sells 3 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 has 168 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 42% of Otona Calendar's written reviews are positive against 77% of Tree人気スケジュール帳 仕事のスケジュール共有で予定管理's.

UpkeepUpdate frequency

Otona Calendar ships an update fortnightly, Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 monthly. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.

Scorecard3 real differences · 7 level
Otona Calendar versus Tree人気スケジュール帳 仕事のスケジュール共有で予定管理: the parameters behind the verdict, then further details
ParameterOtona CalendarTree人気スケジュール帳 仕事のスケジュール共有で予定管理
PriceFreeFree
Rating4.1 (10 ratings)4.8 (168 ratings) — better
Positive reviews41.7% of reviews77.4% of reviews — better
Number of ratings10168 — better
Update frequencyFortnightly — betterMonthly
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size49 MB152 MB
Age rating4+4+
DeveloperMasaki HiranoLAN CHEN

Customer experience

Otona Calendar

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%
Written reviews60 reviews
Positive41.7%
Neutral10.0%
Negative48.3%

Tree人気スケジュール帳 仕事のスケジュール共有で予定管理

All ratings168 ratings
Positive95.8%
Neutral4.2%
Negative0.0%
Written reviews53 reviews
Positive77.4%
Neutral15.1%
Negative7.5%

In-app purchases

1 purchases

Otona Calendar

One-time1
  • Remove Ads$3.99
3 purchases

Tree人気スケジュール帳 仕事のスケジュール共有で予定管理

Subscriptions1
  • プレミアムプラン$2.491 Month
One-time2
  • 広告非表示$1.99
  • アップグレードパック$3.99

Questions

Is Otona Calendar free?
Otona Calendar is free to download, with in-app purchases available.
Is Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 free?
Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 is free to download, with in-app purchases available.
Which has better reviews, Otona Calendar or Tree人気スケジュール帳 仕事のスケジュール共有で予定管理?
Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 is rated higher. Otona Calendar averages 4.1 out of 5 from 10 ratings, while Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 averages 4.8 from 168 ratings.
Do Otona Calendar or Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 have ads?
Both Otona Calendar and Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 show ads.
Which is updated more often, Otona Calendar or Tree人気スケジュール帳 仕事のスケジュール共有で予定管理?
Otona Calendar ships an update fortnightly, and Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 monthly. Most recently, Otona Calendar was updated on November 11, 2026 and Tree人気スケジュール帳 仕事のスケジュール共有で予定管理 on November 13, 2026.

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