MonakaChat(モナカチャット)|消えるチャット vs postin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MonakaChat(モナカチャット)|消えるチャット
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消えるから、話せる。 MonakaChatは「残さない」チャットアプリです。 登録なしで、その場で。友達とも、ひとりでAIとも、気負わず話せます。 会話は時間がきたら閉じ、30日でサーバーからも消えます。 ■ 登録不要、すぐにはじめられる アカウント登録は不要。アプリを開いて、その場で話しはじめられます。 ■ 友達と、その場で コードかQRを見せるだけで参加。連絡先交換もフォローもいりません。 話が終われば、ぜんぶ消える。後腐れゼロ。 ■ ひとりで、AIと深く 誰にも言えないことを、そっと置いていく場所。 AIは静かな聞き手。受け止めて、たまに問い返す。 残らないから、本音で吐き出せます。 ■ 残さない設計が、いちばんのプライバシー 会話は時間で閉じ、サーバーからも削除。一期一会のチャットです。 こんなときに: ・初対面やイベントで連絡先を交換せずに話す ・フリマや受け渡しの一時的な連絡 ・誰にも言えない愚痴や悩みをAIに吐き出す ・アイデアの壁打ち、寝る前の頭の整理 無料ではじめられます。 【注意事項】 ・本サービスの利用規約をご確認いただき、同意いただいた上でご利用ください。 ・Monakachatサービス利用規約 ・https://faq.monaka.chat/
postin
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A little love, in a postcard. “Thank you for today.” “I can’t wait to see you again.” With postin, turn your favorite photos and a few heartfelt words into a digital postcard for the person you love. Share it through LINE. Your partner can open it in their browser—no app download or account needed. After a date. On a day you wish you could be together. For a birthday or anniversary. Give them a little something to open, smile at, and cherish. ■ Make it yours Add a photo, write a message, and decorate your postcard with handwriting, drawings, and stickers. A stamp is already in place, so you can start creating right away. You can swap it for another one, too. ■ Share through LINE Create a link to your postcard and send it through LINE. Your partner simply opens the link to view the card in their browser—even if they don’t use postin. ■ Open now, or save the surprise Let your partner open the card right away, or choose the date and time it becomes available. Make it a surprise for midnight on their birthday or the morning of your anniversary. Note: Scheduling sets when the postcard can be opened. It does not automatically send a LINE message. Please share the link with your partner in advance. ■ Try your first postcard Create and send a postcard in the tutorial without using a stamp. Start with a photo you love and something you’ve been meaning to say. ■ Stamps and subscriptions Regular postcard sending and share-link creation use stamps. Additional stamps are available through in-app purchases. An optional subscription includes unlimited sending, subscriber-exclusive stationery, and desk backgrounds. Receiving and viewing postcards is free. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the current period ends. You can manage or cancel your subscription in your App Store account settings. See the in-app purchase screen for pricing and subscription periods. Terms of Service: https://honey-cucumber-463.notion.site/postin-3adcc260b87780bc9705ff7010973037
Screenshots
Verdict
The clearest difference is in-app purchases: MonakaChat(モナカチャット)|消えるチャット at none against postin's 3. MonakaChat(モナカチャット)|消えるチャット also leads on iOS requirement (16.0 vs 26.0). postin's advantage is update cadence (every 2 days vs every 9 days). On price, 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
Both are free to download. postin sells 3 in-app purchases, starting at $1.99 per month. MonakaChat(モナカチャット)|消えるチャット asks for nothing beyond the download.
MonakaChat(モナカチャット)|消えるチャット ships an update every 9 days, postin every 2 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.
| Parameter | MonakaChat(モナカチャット)|消えるチャット | postin |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 42 MB | 47 MB |
| Age rating | 12+ | 4+ |
| Developer | GIRON INC. | keishi yokoi |
In-app purchases
MonakaChat(モナカチャット)|消えるチャット
No in-app purchases
postin
- Subscription Plan (Monthly)$1.991 Month
- Annual Subscription$19.991 Year
- 5 Stamps$0.29
Questions
Is MonakaChat(モナカチャット)|消えるチャット free?
Is postin free?
Do MonakaChat(モナカチャット)|消えるチャット or postin have ads?
Which is updated more often, MonakaChat(モナカチャット)|消えるチャット or postin?
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