Comparison

Riiiver vs Flower Diary

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

Head to head
About

Riiiver

This platform allows users to create and customize "iiideas" by connecting compatible products and services. No programming skills are required to assemble functional modules and bring your own ideas to life.

Highlights
  • Create and use functional "iiideas"
  • Assemble functions from Trigger, Service, and Action Pieces
  • No programming skills needed
  • Develop custom Pieces (for advanced users)
  • Connects compatible products and services
  • Open IoT platform
Features
Read full description

Riiiver is an IoT platform that connects products and services, expanding their possibilities and providing a new kind of user experience. *Limited to Riiiver-compatible products and services. ~~Create and Use Your "iiideas"~~ With the Riiiver app, you can create and use functional items called "iiidea." Start by selecting one of the available iiideas that interests you and give it a try! ~~Make your “iiideas” come to life~~ You can create “iiidea” for the Riiiver platform. If you’ve ever wondered, “Wouldn’t it be great if I could do this?” or “Wouldn’t it be convenient to have that function?”, with Riiiver you can easily shape your ideas and make them a reality. ~~No special skills are needed!~~ Creating new functions with Riiiver is so easy. You don’t need to know anything about programming. All you have to do is put together a few functional modules (known as Pieces) in the app. Those with specialized knowledge (such as programming) can even create Pieces themselves. For more information on Piece development, please visit the Riiiver Developers website (https://developer.riiiver.com). ~~The structure of Riiiver~~ In Riiiver, functions are called “iiidea.” They are assembled from the three types of Pieces: Trigger, Service, and Action. To see a list of available Pieces, please check the following page: https://app.riiiver.com/piece_list/piece_list.html Riiiver is an open IoT platform service. As such, we plan to increase the number of compatible products in the future, so please stay tuned!

About

Flower Diary

Record your day with a single line and choose your mood to grow a unique flower. This app offers a peaceful journaling experience without pressure, focusing on small, honest moments. Watch your garden of flowers bloom over time, creating a beautiful visual representation of your year.

Highlights
  • Daily one-line journal entries
  • Mood selection to grow unique flowers
  • Calendar view with blooming flowers
  • Monthly vase and yearly shelf display
  • Zoom and shareable flower bouquet
  • Gentle daily reminders
  • iCloud backup (premium)
Features
Read full description

「花の日記」は、静かな毎日の日記です。きょうの一日を短い一行で書き、その気持ちを選ぶと、花が一輪咲きます。ほかのどこにもない、あなただけの花です。 連続記録を守る必要も、追いかける数字もありません。ただ、一日にひとつの小さな正直な瞬間と、あなたが続けたからこそ育つ、うつくしいもの。 ■ つかいかた ・きょうのことを一行書いて、気分を選ぶ。 ・その日の花が咲きます。かたち・色・表情はあなたの言葉から生まれ、二度と変わりません。 ・一日ごとの花は、今月の花瓶に加わります。十二の花瓶が、一年の棚を満たします。 ■ できること ・その月の花束が育っていく、静かなホーム ・書いた日に花がともる暦(カレンダー) ・どの日でも、その日の一行を読み返せる ・花束を大きく映すズーム表示と、シェアできる美しい一枚 ・よければ、やさしい毎日のリマインダー ■ プレミアム ・棚 ― 一年ぶんの十二の花瓶 ・すべての記録(全期間の履歴) ・透かしなし・高画質の書き出し ・すべてのテーマ ・iCloudバックアップ 記録はあなたの端末に保存されます。広告なし、トラッキングなし、アカウント登録も不要。あなたと、一日一行と、それを憶えている庭だけ。 利用規約(Apple標準EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Riiiver4 screens
Flower Diary4 screens

Verdict

The call

The clearest difference is rating: Flower Diary at 5.0 against Riiiver's 1.0. Flower Diary also leads on update cadence (fortnightly vs every 2 months). Riiiver's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On price, 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. Flower Diary sells 3 in-app purchases, starting at $1.99 per month. Riiiver asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flower Diary holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

UpkeepUpdate frequency

Riiiver ships an update every 2 months, Flower Diary fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Riiiver versus Flower Diary: the parameters behind the verdict, then further details
ParameterRiiiverFlower Diary
PriceFreeFree
Rating1.0 (4 ratings)5.0 (3 ratings) — better
Positive reviews16.7% of reviews—
Number of ratings4 — better3
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.0 — better17.0
Further details — not scored
Size34 MB8 MB
Age rating4+4+
DeveloperCITIZEN WATCH CO.,LTDTAIGA SOBAJIMA

Customer experience

Riiiver

All ratings4 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive16.7%
Neutral16.7%
Negative66.7%

Flower Diary

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Riiiver

No in-app purchases

3 purchases

Flower Diary

Subscriptions2
  • プレミアム(月額)$1.991 Month
  • プレミアム(年額)7 Days trial$14.991 Year
One-time1
  • プレミアム(永久)$39.99

Questions

Is Riiiver free?
Riiiver is free to download, with no in-app purchases.
Is Flower Diary free?
Flower Diary is free to download, with in-app purchases available.
Which has better reviews, Riiiver or Flower Diary?
Flower Diary is rated higher. Riiiver averages 1.0 out of 5 from 4 ratings, while Flower Diary averages 5.0 from 3 ratings.
Do Riiiver or Flower Diary have ads?
Neither Riiiver nor Flower Diary shows ads.
Which is updated more often, Riiiver or Flower Diary?
Riiiver ships an update every 2 months, and Flower Diary fortnightly. Most recently, Riiiver was updated on November 2, 2026 and Flower Diary on October 31, 2026.

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