Comparison

My Nikki vs Diary! SmartDiary

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

Diary! SmartDiary

Record daily life with photos and track your mood and schedule on a calendar. Secure your entries with a passcode and easily access past memories. Customize your diary with various settings for a personalized experience.

Highlights
  • Record memories with photos
  • Track daily mood and schedule
  • Passcode lock with biometric support
  • iCloud backup and data migration
  • Customizable calendar and diary settings
  • Input forgetting notifications
Read full description

Simple and easy operation private diary application. ・Leave memories of daily life with photos easily. ・You can enter in the calendar the mood and schedule of the day. ・You can easily display past memories. ・Passcode lock (Touch ID, Face ID support) ・iCloud backup (iPhone, data migration between the iPad is also possible) [Other functions] ・Cover photo setting ・Calendar display setting (Start Week On, Calendar Position, Cover Photo Size, Transparency) ・Diary text setting (Font Size, Font Depth, Line Spacing) ・Theme color setting ・Notification of forgetting input ・Support for landscape orientation (iPad only) [Credit] ・Designed by Freepik and distributed by Flaticon (https://www.flaticon.com) ・Icons8 (https://icons8.com) ・This software includes the work that is distributed in the Apache License 2.0.

Screenshots

My Nikki4 screens
Diary! SmartDiary4 screens

Verdict

The call

The clearest difference is update cadence: My Nikki at every 3 weeks against Diary! SmartDiary's every 3 months. Diary! SmartDiary's advantage is review sentiment (93% vs 73%) and device support (3 vs 1). On price, rating, ratings volume and ads 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 and Diary! SmartDiary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for My Nikki against 4.6 for Diary! SmartDiary. Both are backed by a comparable volume of ratings — 31 and 45 respectively. Written reviews are what separate them: 73% of My Nikki's written reviews are positive against 93% of Diary! SmartDiary's.

UpkeepUpdate frequency

My Nikki ships an update every 3 weeks, Diary! SmartDiary every 3 months. Both last shipped on October 21, 2026.

Scorecard4 real differences · 6 level
My Nikki versus Diary! SmartDiary: the parameters behind the verdict, then further details
ParameterMy NikkiDiary! SmartDiary
PriceFreeFree
Rating4.7 (31 ratings) — better4.6 (45 ratings)
Positive reviews73.0% of reviews93.3% of reviews — better
Number of ratings3145 — better
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size57 MB12 MB
Age rating4+4+
DeveloperAnySense Inc.Hideki Okuno

Customer experience

My Nikki

All ratings31 ratings
Positive96.8%
Neutral0.0%
Negative3.2%
Written reviews141 reviews
Positive73.0%
Neutral11.3%
Negative15.6%

Diary! SmartDiary

All ratings44 ratings
Positive90.9%
Neutral2.3%
Negative6.8%
Written reviews45 reviews
Positive93.3%
Neutral6.7%
Negative0.0%

In-app purchases

2 purchases

My Nikki

Subscriptions2
  • Remove Ads$1.991 Month
  • Premium$2.991 Month
1 purchases

Diary! SmartDiary

One-time1
  • Remove Ads$2.99

Questions

Is My Nikki free?
My Nikki is free to download, with in-app purchases available.
Is Diary! SmartDiary free?
Diary! SmartDiary is free to download, with in-app purchases available.
Which has better reviews, My Nikki or Diary! SmartDiary?
My Nikki is rated higher. My Nikki averages 4.7 out of 5 from 31 ratings, while Diary! SmartDiary averages 4.6 from 45 ratings.
Do My Nikki or Diary! SmartDiary have ads?
Both My Nikki and Diary! SmartDiary show ads.
Which is updated more often, My Nikki or Diary! SmartDiary?
My Nikki ships an update every 3 weeks, and Diary! SmartDiary every 3 months. Most recently, My Nikki was updated on October 21, 2026 and Diary! SmartDiary on October 21, 2026.

Other comparisons