O vs postalk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
O
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アルバイトや社員のシフトを管理。
postalk
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ボードにカード（テキスト）を貼って並べるだけのシンプルなソフトウェアです。 モバイルでは時系列のチャット形式になっているため、場所を選ばずいつでも会議を進めることができます。 モバイルでもボードの画面を閲覧できるようになっていて、チャットでアイデアを書き出して、そのあとカードを並びかえるといった使い方も可能です。 話題ごとにたくさんボードを作れば、検索や通知によって時間と場所を選ばない今までにない会議スペースができあがります。
Screenshots
Verdict
The clearest difference is in-app purchases: O at none against postalk's 2. O also leads on ads (none vs shown). On price, update cadence, 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. postalk sells 2 in-app purchases, starting at $5.99 per month. O asks for nothing beyond the download.
O ships an update every 3 weeks, postalk monthly. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.
| Parameter | O | postalk |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 90 MB |
| Age rating | 4+ | 17+ |
| Developer | O-TECH JAPAN | postalk株式会社 |
In-app purchases
O
No in-app purchases
postalk
- 使い放題プラン$5.991 Month
- 年額8,980円$59.991 Year
