himacha vs うみびん
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
himacha
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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/
うみびん
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「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
Verdict
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
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.
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.
| Parameter | himacha | うみびん |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.2 | 17.6 — better |
| Further details — not scored | ||
| Size | 23 MB | 100 MB |
| Age rating | 17+ | 4+ |
| Developer | sho tsugawa | Akito Ikeshita |
In-app purchases
himacha
- Lite Plus$2.991 Month
うみびん
No in-app purchases









