最終更新： May 5, 2026
Email [email protected]. We answer within two business days, usually faster.
If your question is about an account or a purchase, include the email address you signed up with so we can find your account.
You can also reach us through our Discord.
Force-quit and reopen the app. Underfiction queries the App Store or Google Play on launch for any unfinished purchases and applies the credits.
If credits still don't appear after a relaunch, email us with the date of purchase and the credit pack you bought. Apple and Google retain a record of every transaction; we can reconcile against it.
Open Settings → Credits and pick a pack. Credits don't expire and there is no subscription.
A failed turn isn't charged. Settlement only debits your wallet when the model returns a complete response — if a generation aborts, the reservation is released and your balance returns to where it was.
If failures persist on a particular scene, try switching models from Settings → Model. Different providers handle long contexts differently.
With sync on, stories, characters, and worlds follow the same signed-in account automatically. Check that both devices use the same account and that sync is enabled under Settings → Library. With sync off, your library remains on that device until you turn sync back on.
You can also move data manually with a portable archive — a single story from its story menu, or your whole library from Settings → Export all data. Import the file on the other device; the same import action accepts both.
AI generation still sends story context to the model provider while a scene is being written.
See Delete your account for the full procedure and what happens to your data.
If your question isn't covered here, write to [email protected]. We read every message.