Support
We're here to help you get the most out of Fluo. Find answers to common questions below, or reach out to our team directly.
Frequently Asked Questions
How do I reset my password?
On the sign-in screen, tap "Forgot Password?" and enter the email address associated with your account. You'll receive a password reset link within a few minutes.
How do I watch videos?
Open Fluo and swipe through the video feed. While a video plays, tap any word in the subtitles to see its meaning (and pinyin, for Chinese) and add it to your vocabulary for spaced-repetition review. Swipe up for the next video.
Where do the videos come from?
The videos are made by independent creators and published on TikTok. Fluo plays them inside TikTok's own embedded player, with the creator's name shown and a link to the original post (tap the three-dot More icon, then "Open on TikTok"). Fluo keeps only a thumbnail and a preview copy of each video for the home screen; watching happens in TikTok's player, and Fluo does not redistribute the videos. The interactive subtitles are generated automatically by speech recognition and machine translation, so they can contain mistakes — use the Report option on any video to flag one.
Can I download videos for offline use?
Currently, videos require an internet connection to stream. We are exploring offline support for a future update.
How do I manage or cancel my subscription?
Go to your Profile in the app and tap "Manage Subscription." This will open your Apple ID subscription settings where you can change or cancel your plan. You can also go to Settings > [Your Name] > Subscriptions on your device.
How do I restore my purchases on a new device?
Go to your Profile in the app and tap "Restore Purchases." Make sure you're signed in with the same Apple ID you used for the original purchase.
How do I delete my account?
Go to Profile > Delete Account. This will permanently remove your account and all associated data. This action cannot be undone. If you have already uninstalled the app, you can also delete your account from our account deletion page.
How do I report a video or a copyright concern?
Every video has an in-app "Report" option, including a reason for copyright concerns — tap it to flag content for our team. You can also email [email protected]. For copyright takedown requests and our DMCA process, see our Copyright & DMCA Policy.
What are AI features and how do I enable them?
AI features generate personalized practice sentences, on-demand translations, and the AI tutor's answers. They run on third-party AI services (Google Gemini and the other providers listed in our Privacy Policy). You can enable or disable AI features at any time in Profile > AI-Powered Features. When enabled, the text you submit and the vocabulary needed to personalize the result are sent to the AI provider; your name, email, and account details are never shared. Video subtitles are generated separately by speech-recognition services and do not depend on this setting.
Can I use Fluo without AI features?
Yes. Without AI features enabled, you can still practice with Fluo's existing sentence library using spaced repetition. AI features are optional.