What is OPO?
OPO (Only Post Once) is an iOS social app where every user gets exactly one post for their entire account lifetime. Upload one photo, write a caption, and that post lives permanently on the platform. It cannot be edited, deleted, or replaced. Posting unlocks access to the community feed — a scrollable gallery of everyone else's single post.
Can I delete or edit my post?
No. Your post is permanent and irrevocable. It cannot be deleted, edited, or replaced — by you or by OPO. This is the core rule: choose wisely.
Is OPO available on Android?
No. OPO is currently available exclusively on iPhone via the Apple App Store. There is no Android version and no web posting interface.
Is OPO free?
OPO has a free tier. A premium subscription is available as an auto-renewable monthly subscription through Apple's In-App Purchase system. Visit the App Store listing for current pricing.
How do I get access to the feed?
After you make your one post inside the iOS app, the full community feed is unlocked. You can then browse everyone else's one-and-only posts.
Does OPO have a public API or developer plugin?
No. OPO does not offer a public API, REST endpoints, OpenAPI specification, ChatGPT plugin, MCP server, or any developer integration. It is a consumer iOS app only.
Who made OPO?
OPO was created by mr humble, a solo developer. For support, email fausto.alemao@gmail.com.
Is OPO a health or medical app?
No. OPO is a social networking and entertainment app. It is not a medical, mental health, or wellness app and should not be treated as such.