Comparison

JIKAN vs Simple ToDo Diary

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

Head to head
About

JIKAN

Features
Read full description

JIKAN is an app that counts down the days to your future events and counts up the time elapsed since your past milestones. Easily check at a glance how many days remain until your most important anniversaries or the day you achieve your goals. The name "JIKAN"—the Japanese word for "Time"—was chosen to reflect our mission: to help you cherish your life and make every passing moment count. Key Features: Event Countdown: Displays the time remaining until your next big event in days, hours, minutes, and seconds. Customization: Personalize your experience by setting your favorite photos as event backgrounds. Past Event Tracker (Count-up): See exactly how much time has passed since a completed event or a special memory. Life Timer: By simply entering your birthday, visualize how much time remains in your journey (calculated up to age 80). Smart Notifications: Receive regular push notifications to stay updated and inspired as your events approach. Widget: View your event at a glance Whether you’re looking for a new Countdown Buddy to track life’s milestones or a reliable Days Since counter for your achievements, JIKAN is the perfect alternative to apps. More than just a simple Countdown Timer, JIKAN allows you to visualize your life and goals in a meaningful way. With our sleek Countdown function, Experience the best Countdown and Countdown app designed to help you cherish every second. EULA: https://docs.google.com/document/d/1j3WhTs6xDQqjjrabhGbxQTaw0DEd_HROi8FFTo0wXcU/edit?usp=sharing

About

Simple ToDo Diary

Features
Read full description

Simple ToDo Diary is an easy-to-use app for managing daily tasks and notes. You can write quick memos, manage your to-do list, and check off completed tasks. It also works as a light daily diary to record small moments. Designed to be simple, clean, and stress-free for everyday use.

Screenshots

JIKAN4 screens
Simple ToDo Diary3 screens

Verdict

The call

The clearest difference is ads: Simple ToDo Diary at none against JIKAN's shown. Simple ToDo Diary also leads on update cadence (daily vs monthly). JIKAN's advantage is iOS requirement (15.0 vs 18.6). On price, 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. JIKAN sells 3 in-app purchases, starting at $4.99 per month and Simple ToDo Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

JIKAN ships an update monthly, Simple ToDo Diary daily. The most recent releases landed on September 15, 2026 and May 31, 2026 respectively.

Scorecard3 real differences · 3 level
JIKAN versus Simple ToDo Diary: the parameters behind the verdict, then further details
ParameterJIKANSimple ToDo Diary
PriceFreeFree
Update frequencyMonthlyDaily — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.6
Further details — not scored
Size66 MB4 MB
Age rating4+4+
DeveloperYosuke OgataKazuya Hashimoto

In-app purchases

3 purchases

JIKAN

Subscriptions2
  • 【Monthly】Premium$4.991 Month
  • 【Annual】Premium$29.991 Year
One-time1
  • 【Life Time】Premium$29.99
1 purchases

Simple ToDo Diary

One-time1
  • 広告を非表示にする$1.99

Questions

Is JIKAN free?
JIKAN is free to download, with in-app purchases available.
Is Simple ToDo Diary free?
Simple ToDo Diary is free to download, with in-app purchases available.
Do JIKAN or Simple ToDo Diary have ads?
JIKAN shows ads; Simple ToDo Diary does not.
Which is updated more often, JIKAN or Simple ToDo Diary?
JIKAN ships an update monthly, and Simple ToDo Diary daily. Most recently, JIKAN was updated on September 15, 2026 and Simple ToDo Diary on May 31, 2026.

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