Comparison

himacha vs うみびん

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

Head to head
About

himacha

Features
Read full description

himacha is a simple chat app designed for moments when you just want to talk to someone—right now. There are no complicated settings or unnecessary features. Open the app, and you’re immediately in a space where you can focus on conversation. Based on past interactions, himacha highlights users who are more likely to offer safe and comfortable conversations, helping create a better chat experience overall. The more you use the app, the more naturally you’ll encounter: Calm and thoughtful exchanges Conversations that feel safe and reassuring Communication that feels easy and unforced A place to simply talk, when you feel like talking. himacha is a chat app that values conversation itself. Prohibited Activities If you encounter any of the following, please use the in-app reporting feature. We will take appropriate action. Use by minors Harassment, hate speech, or behavior that violates public order and morals Fake accounts or deceptive activity Solicitation or promotional activities Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

うみびん

Features
Read full description

「うみびん」は、ネットの海にボトルメールを流す、ゆるいメッセージアプリです。 誰に届くか分からない。いつ届くか分からない。海は気まぐれです。 あなたのメッセージは、どこかの誰かのもとに流れ着きます。 届いたボトルを開いて読んだら、返事を書いてもいいし、そっと海に還してもいい。 ■ 特徴 ・会員登録なし。開いたらすぐ使えます ・メッセージを書いて「放つ」だけのシンプル操作 ・1日数回、誰かのボトルメールが流れ着きます ・レアな称号やメダルを集める楽しみも ・「未来へ」で自分だけのタイムカプセルとしても使えます 個人情報の入力は不要。あなたが何を書くかだけで繋がる、ちょっと不思議なコミュニケーションです。

Screenshots

himacha4 screens
うみびん4 screens

Verdict

The call

The clearest difference is in-app purchases: うみびん at none against himacha's 1. うみびん also leads on update cadence (daily vs every 11 days). On price, ads, device support and iOS requirement 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. himacha sells 1 in-app purchase, starting at $2.99 per month. うみびん asks for nothing beyond the download.

UpkeepUpdate frequency

himacha ships an update every 11 days, うみびん daily. The most recent releases landed on October 28, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 4 level
himacha versus うみびん: the parameters behind the verdict, then further details
Parameterhimachaうみびん
PriceFreeFree
Update frequencyEvery 11 daysDaily — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.217.6 — better
Further details — not scored
Size23 MB100 MB
Age rating17+4+
Developersho tsugawaAkito Ikeshita

In-app purchases

1 purchases

himacha

Subscriptions1
  • Lite Plus$2.991 Month
None

うみびん

No in-app purchases

Questions

Is himacha free?
himacha is free to download, with in-app purchases available.
Is うみびん free?
うみびん is free to download, with no in-app purchases.
Do himacha or うみびん have ads?
Both himacha and うみびん show ads.
Which is updated more often, himacha or うみびん?
himacha ships an update every 11 days, and うみびん daily. Most recently, himacha was updated on October 28, 2026 and うみびん on October 8, 2026.

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