Comparison

99캘린더 vs Checklist Ishin

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

Head to head
About

99캘린더

Features
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99Calendar is a schedule management app that brings together your timetable, daily timeline, and calendar in one place. Organize repeating weekly schedules in a timetable view, follow your day in a timeline view, and check date-based plans in the calendar. You can turn schedule sets on or off to focus only on what you need, and view timetable items together with calendar events. Features Weekly timetable-based schedule management Daily timeline view Turn schedule sets on or off View timetable items and calendar events together Import and export support Theme options Counter features for routine tracking 99Calendar is designed to help you manage everyday schedules in a simple and lightweight way. Some counter features are optional personal logging tools. Health or cycle-related information is for personal reference only and is not intended for medical diagnosis, treatment, or guidance.

About

Checklist Ishin

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Free to use. No ads. No account required. The developer does not collect data from this app. Checklist Ishin helps you keep repeatable tasks clear, one step at a time. Create a checklist for work, travel, chores, or any routine, then save a record of each run. • Build and edit your own checklists, with photos for covers and steps. • Move through each step with Done, Skip, or Later. Pause and resume a run when you need to. • Keep a history of the steps and photos as they appeared when you ran the checklist. • Explore 140 ready-to-use templates and copy the ones you want to customize. • Set local reminders for daily, weekly, or specific dates. • Use spoken prompts and on-device voice commands where supported, or use the touch controls. • Enjoy sound effects as you work through your list. Your checklists and history stay on your device. No account or cloud sync is required.

Screenshots

99캘린더4 screens
Checklist Ishin4 screens

Verdict

The call

The clearest difference is price: Checklist Ishin at Free against 99캘린더's $1.99. 99캘린더's advantage is update cadence (every 4 days vs every 10 days). 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

Checklist Ishin is free to download; 99캘린더 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

99캘린더 ships an update every 4 days, Checklist Ishin every 10 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level
99캘린더 versus Checklist Ishin: the parameters behind the verdict, then further details
Parameter99캘린더Checklist Ishin
Price$1.99Free — better
Update frequencyEvery 4 days — betterEvery 10 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better18.0
Further details — not scored
Size5 MB10 MB
Age rating4+12+
DeveloperHWAN LEEMitsuru Okura

In-app purchases

None

99캘린더

No in-app purchases

None

Checklist Ishin

No in-app purchases

Questions

Is 99캘린더 free?
99캘린더 costs $1.99, with no in-app purchases.
Is Checklist Ishin free?
Checklist Ishin is free to download, with no in-app purchases.
Do 99캘린더 or Checklist Ishin have ads?
Neither 99캘린더 nor Checklist Ishin shows ads.
Which is updated more often, 99캘린더 or Checklist Ishin?
99캘린더 ships an update every 4 days, and Checklist Ishin every 10 days. Most recently, 99캘린더 was updated on October 25, 2026 and Checklist Ishin on October 24, 2026.

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