Comparison

My Nikki vs DayDiary

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

Head to head
About

My Nikki

This app allows users to privately record daily events, thoughts, and photos in a simple, cute digital journal. It offers password protection for privacy and organizes entries into a visually appealing album format.

Highlights
  • Daily event recording
  • Photo insertion (up to 10 per day)
  • Calendar and list display
  • Password lock for privacy
  • Search function
  • Notification reminders
Read full description

Everyone is using secretly, Simple easy and cute NO. 1 diary app "My Nikki" ◆ Thanks to 3.0 million downloads of My Nikki finally appeared on iOS! ◆ "Let's look back today's day for 5 minutes before going to bed." Unlike blogs and social networking, I set daily situations in my own iPhone diary I will spell the events and pictures of the day in a simple fashion with opening the application. By spelling yourself as it is, everyday everyday changes to your own story! By displaying the diary in a list, it becomes a cute album that is beautiful and nice arranged clean every month. Correspond well to privacy concerns firmly! Since password input can be set at the time of starting, it is safe when lending a smartphone to someone. There is no worry that people can see important diaries! (※ Password can not be reissued.In regard to the setting contents, please manage firmly with individuals.) 【To this situation! 】 · Casual scenery found by walking · Delicious dishes and sweets · Cute baby of relatives · Talking with friends at family restaurant · Pleasant everyday with friendly fellows with a sense of pre-clique 【Recommended for people like this】 · Those who do not keep a diary or blog · One who wants to make a photo album · People who love Purikura · Person who wants to look back on the days in private space only of myself · Those looking for a cute memo pad · If you want to manage photos for free · Those who want to record their child's daily growth · Person who wants to record everyday cooking · Those who want to organize pictures of your pride · Those who want to record happy memories such as travel · Those who want to take care of casual situations 【Function summary】 · Fill / Edit - Image insertion from camera roll (insertable up to 10 sheets per day) · Insert image deletion · Calendar display · Register your favorite photos · List display · Moving year, moving · Today move · Password lock · Password hint display ·Change Password · Privacy support · Notification function · Search function 【Subscription】 Remove Ads $1.99/monthly Premium $2.99/monthly - Your payment will be charged to your iTunes Account once you confirm your purchase. - Your iTunes Account will be charged again when your subscription automatically renews at the end of your current subscription perior unless auto-renew is turned off at least 24 hours prior to the end of the current period. - You can manage or turn off auto-renew in your Apple ID Account Settings any time after purchase. Privacy Policy: https://myapp.anysense.co.jp/privacypolicy/ Terms of Use: https://myapp.anysense.co.jp/terms/ ******* - Website https://mynikki.life/ - Twitter https://twitter.com/mynikkifun - Facebook https://www.facebook.com/mynikkiapp

About

DayDiary

Features
Read full description

Day Diary is your shared space to capture everyday life — together. Whether it’s planning your day, saving memories, or just staying connected, Day Diary lets you and someone special organize your time and moments in a simple, creative way. Shared Calendar Plan your day hour by hour. Add events, track your routine, and see updates instantly across devices. Shared List Keep notes, tasks, or ideas in one place — updated in real time for both of you. Personal Touch Attach photos, add stickers, and turn your daily schedule into something meaningful and fun. Real-Time Sync Everything updates instantly between you and your partner, so you're always on the same page. Private & Secure Your data is shared only between you and the people you invite. Perfect for: • Best friends • Couples • Roommates • Anyone who wants to stay connected daily Start sharing your life — one day at a time.

Screenshots

My Nikki4 screens
DayDiary3 screens

Verdict

The call

The clearest difference is in-app purchases: DayDiary at none against My Nikki's 2. DayDiary also leads on ads (none vs shown) and device support (3 vs 1). My Nikki's advantage is update cadence (every 3 weeks vs every 2 months). On price 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. My Nikki sells 2 in-app purchases, starting at $1.99 per month. DayDiary asks for nothing beyond the download.

UpkeepUpdate frequency

My Nikki ships an update every 3 weeks, DayDiary every 2 months. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
My Nikki versus DayDiary: the parameters behind the verdict, then further details
ParameterMy NikkiDayDiary
PriceFreeFree
Rating4.7 (31 ratings) — better—
Positive reviews73.0% of reviews—
Number of ratings31 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size57 MB29 MB
Age rating4+4+
DeveloperAnySense Inc.Artem Rykov

In-app purchases

2 purchases

My Nikki

Subscriptions2
  • Remove Ads$1.991 Month
  • Premium$2.991 Month
None

DayDiary

No in-app purchases

Questions

Is My Nikki free?
My Nikki is free to download, with in-app purchases available.
Is DayDiary free?
DayDiary is free to download, with no in-app purchases.
Do My Nikki or DayDiary have ads?
My Nikki shows ads; DayDiary does not.
Which is updated more often, My Nikki or DayDiary?
My Nikki ships an update every 3 weeks, and DayDiary every 2 months. Most recently, My Nikki was updated on November 2, 2026 and DayDiary on October 25, 2026.

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