Comparison

Pirika vs note(ノート)

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

Head to head
About

Pirika

This app visualizes litter collection efforts to motivate users to clean up their surroundings. Join a global community dedicated to making the world a cleaner place by picking up trash and contributing to environmental solutions.

Highlights
  • Visualize litter collection
  • Social contribution tracking
  • Global community engagement
  • Environmental awareness
  • Motivate cleanup efforts
  • Litter pollution solutions
Read full description

Pirika is the world's most popular litter collection and social contribution app*. By enabling the users to visualize the act of litter collecting, we can motivate each other through this app to spread the word and make the world a cleaner place. The pollution caused by litter in nature is a worldwide issue nowadays. This is especially serious for litter leaking to rivers, ocean, and the seas, as they not only destroy the ecosystems but also affect us human beings by polluting our food. 80% of litter in the seas and oceans come from the lands, so picking litter up is an important step in solving litter pollution. Will you join Pirika, the litter collection app originated from Japan, to help solve this huge problem? Pirika was created in 2011 by students from Kyoto University secretly, using the equipment in the university to develop the app. When they started their service, they were frequently laughed at - "who will use such a service?" - but the app has grown to be used in over 111 countries, with more than 210,000,000 pieces of litter having been picked up. Awards - 1st Green Startup Awards, “Minister of the Environment” Award, 2021 - Winner of Orange Impact Challenge 2020 - Rise Up Festa, Best Performance Awards, 2020 Media Coverage We’ve been featured on NHK, TV Tokyo, The Japan News, The Asahi Shimbun, Nikkei Asia, Yahoo News, and etc. Pirika means "beautiful" in Ainu, a language spoken by the indigenous people of Japan.

About

note(ノート)

A media platform for creators and their supporters. Discover new content, connect with interesting people, and share your passions. Build communities around shared interests and expand your creative network.

Highlights
  • Post your passions and thoughts
  • Read articles from favorite creators
  • Create article collections (magazines)
  • Connect with like-minded individuals via memberships
  • Discover new content and creators
Features
Read full description

note(ノート)は、創作をする人、それを応援する人のためのメディアプラットフォームです。 https://note.com/ さまざまな思いを持ったクリエイターが混ざり合って、好きなものを見つけたり、おもしろい人に出会えたりするチャンスが広がっています。 noteでできること ・自分の好きなことや伝えたいことを投稿する ・好きなクリエイターの記事を読む ・記事をまとめたマガジンをつくる ・同じ趣味や思いを持った人と、メンバーシップでつながる いっしょに、創作の輪を広げていきましょう!

Screenshots

Pirika4 screens
note(ノート)4 screens

Verdict

The call

Pirika and note(ノート) both sit at 4.9 stars, but that hides the real split: 83% of Pirika's written reviews are positive against 47% of note(ノート)'s. Pirika also leads on in-app purchases (none vs 13). note(ノート)'s advantage is ratings volume (205 vs 8) and update cadence (every 2 weeks vs every 3 weeks). On price, rating, ads 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. note(ノート) sells 13 one-off in-app purchases. Pirika asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Pirika against 4.8 for note(ノート). That said, the two scores are not equally well evidenced: note(ノート) has 205 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 83% of Pirika's written reviews are positive against 47% of note(ノート)'s.

UpkeepUpdate frequency

Pirika ships an update every 3 weeks, note(ノート) every 2 weeks. Both last shipped on October 29, 2026.

Scorecard5 real differences · 5 level
Pirika versus note(ノート): the parameters behind the verdict, then further details
ParameterPirikanote(ノート)
PriceFreeFree
Rating4.9 (8 ratings) — better4.8 (205 ratings)
Positive reviews82.8% of reviews — better46.7% of reviews
Number of ratings8205 — better
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.018.0
Further details — not scored
Size35 MB90 MB
Age rating4+17+
DeveloperPirika,Inc.note inc. (Tokyo)

Customer experience

Pirika

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews58 reviews
Positive82.8%
Neutral6.9%
Negative10.3%

note(ノート)

All ratings204 ratings
Positive93.6%
Neutral2.5%
Negative3.9%
Written reviews60 reviews
Positive46.7%
Neutral15.0%
Negative38.3%

In-app purchases

None

Pirika

No in-app purchases

13 purchases

note(ノート)

One-time13
  • ポイント100$0.99
  • ポイント300$2.99
  • ポイント500$3.99
Show 10 more
  • ポイント700$5.99
  • ポイント1030$8.99
  • ポイント2070$17.99
  • ポイント3140$24.99
  • ポイント5260$39.99
  • ポイント10550$89.99
  • ポイント21100$179.99
  • ポイント31650$299.99
  • ポイント52750$399.99
  • ポイント105500$899.99

Questions

Is Pirika free?
Pirika is free to download, with no in-app purchases.
Is note(ノート) free?
note(ノート) is free to download, with in-app purchases available.
Which has better reviews, Pirika or note(ノート)?
Pirika is rated higher. Pirika averages 4.9 out of 5 from 8 ratings, while note(ノート) averages 4.8 from 205 ratings.
Do Pirika or note(ノート) have ads?
Neither Pirika nor note(ノート) shows ads.
Which is updated more often, Pirika or note(ノート)?
Pirika ships an update every 3 weeks, and note(ノート) every 2 weeks. Most recently, Pirika was updated on October 29, 2026 and note(ノート) on October 29, 2026.

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