Comparison

YOUKAMI vs 3 Second

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

Head to head
About

YOUKAMI

Create a personal picture diary with custom drawings and hashtags. This app allows you to express emotions through visual journaling and offers a simple interface for freeform entries. New illustrations are added regularly.

Highlights
  • Picture diary creation
  • Custom drawings by illustrators
  • Hashtag functionality
  • Emotional journaling
  • Freeform entries
  • Regular updates with new art
Features
Read full description

**This version has a limited number of draws.** "We make things for your stylish life." YOUKA : My own picture diary that I draw. # design "Emotional picture diary” : We made a picture diary that contains the emotion of NOTEGG. # How to use "Simple" : You can create a hash tag with YOUKA's own two-way rule. : Fill your diary freely. : Meet the most emotional picture diary in the world. # Drawing : NOTEGG illustrator draws a picture directly. : You can continue to see new pictures through constant updates.

About

3 Second

Easily capture and organize daily moments with short video clips. This app simplifies journaling by focusing on brief recordings, offering features like automatic sorting, mood filters, and time-lapse views to help you revisit memories and track your personal growth.

Highlights
  • Quick 3-second video recording
  • Automatic calendar view
  • Mood-enhancing filters
  • Monthly & yearly timelapse
  • Time Machine for past dates
Features
Read full description

3 Second – Capture Today in 3 Seconds Do long diary entries feel overwhelming? Tired of complex editing? With 3 Second, just 3 seconds is all it takes. Capture tiny moments from your day and let them grow into meaningful memories over time. Key Features • Quick 3-second video recording Capture your day instantly in a simple, focused format. • Automatic calendar view sorted by date All your moments are organized by day, so you can revisit memories at a glance. • Mood-enhancing filters Apply filters to give your 3-second clips a special feeling. • Monthly & yearly timelapse Watch an entire month or year unfold in just seconds. • Time Machine for each date Revisit moments from the same day in past years and see how far you’ve come. Even in a busy life, don’t miss the moments that matter. All it takes is 3 seconds. Experience the passage of time. Meet your past self with 3 Second. Terms of Use: https://han.gl/HCCwV Privacy Policy: https://han.gl/Wclkw

Screenshots

YOUKAMI4 screens
3 Second4 screens

Verdict

The call

The clearest difference is rating: YOUKAMI at 4.8 against 3 Second's 4.0. YOUKAMI also leads on ratings volume (77 vs 4) and device support (3 vs 1). 3 Second's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, review sentiment, in-app purchases and monetization model 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. YOUKAMI sells 4 one-off in-app purchases and 3 Second sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

YOUKAMI holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: YOUKAMI has 77 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 92% of YOUKAMI's written reviews are positive against 95% of 3 Second's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

YOUKAMI ships an update every 2 weeks, 3 Second daily. The most recent releases landed on September 19, 2026 and September 1, 2026 respectively.

Scorecard6 real differences · 4 level
YOUKAMI versus 3 Second: the parameters behind the verdict, then further details
ParameterYOUKAMI3 Second
PriceFreeFree
Rating4.8 (77 ratings) — better4.0 (4 ratings)
Positive reviews91.5% of reviews94.8% of reviews — better
Number of ratings77 — better4
Update frequencyEvery 2 weeksDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better18.6
Further details — not scored
Size17 MB266 MB
Age rating4+4+
DeveloperNOTEGG Corp.Cheol Kim

Customer experience

YOUKAMI

All ratings77 ratings
Positive94.8%
Neutral3.9%
Negative1.3%
Written reviews142 reviews
Positive91.5%
Neutral2.1%
Negative6.3%

3 Second

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews58 reviews
Positive94.8%
Neutral1.7%
Negative3.4%

In-app purchases

4 purchases

YOUKAMI

One-time4
  • Unlimited drawing$0.99
  • Unlimited number of daily diar$0.99
  • Unlimited number of diary page$0.99
Show 1 more
  • Unlimted regist photo$0.99
5 purchases

3 Second

Subscriptions3
  • YesToDay Premium$3.991 Month
  • YesToDay Premium3 Days trial$19.991 Year
  • Yearly Special Price$19.991 Year
One-time2
  • Upgrade Lifetime$19.99
  • Upgrade Lifetime$29.99

Questions

Is YOUKAMI free?
YOUKAMI is free to download, with in-app purchases available.
Is 3 Second free?
3 Second is free to download, with in-app purchases available.
Which has better reviews, YOUKAMI or 3 Second?
YOUKAMI is rated higher. YOUKAMI averages 4.8 out of 5 from 77 ratings, while 3 Second averages 4.0 from 4 ratings.
Do YOUKAMI or 3 Second have ads?
YOUKAMI shows ads; 3 Second does not.
Which is updated more often, YOUKAMI or 3 Second?
YOUKAMI ships an update every 2 weeks, and 3 Second daily. Most recently, YOUKAMI was updated on September 19, 2026 and 3 Second on September 1, 2026.

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