Privacy Policy
Last updated: October 5, 2026
This policy explains how Memomoon LLC (“Memomoon,” “we”) handles information in the Memphys app and on memomoon.com. Memphys is a Mandarin learning app for phones and tablets, published by Memomoon LLC in San Francisco.
The Wubumi Timebox and the pocket language companion described elsewhere on this website are not available yet. We will update this policy before either product collects personal information.
The short version
Memphys keeps your learning progress, photos, and voice recordings on your device. The app does not ask you to create an account. We do not sell personal information, and we do not use it for advertising. This website records a limited amount of visit and performance data so we can operate it.
Information in Memphys
Information that stays on your device
Memphys stores the following in the app’s private storage on your phone or tablet:
- Learning progress, including lessons you open, speaking and writing practice, review schedules, points, and the care and growth of your companion
- Settings you choose, such as sound and reduced motion
- The days you practice
- Photos you take with the camera or choose from your photo library, saved so they can appear with that word in lessons and reviews
Object recognition of those photos runs on your device, using a model included in the app. Handwriting you draw is checked on your device. Photos and handwriting stay on the device.
You can remove a saved photo from the lesson. Uninstalling Memphys, or clearing the app’s storage, deletes the progress and photos the app has stored. Memphys has no account and no cloud backup, so that information cannot be restored after it is deleted. On Android, backup of the app’s data is turned off.
Microphone and pronunciation
Memphys uses the microphone when you tap Record to practice saying a word. In the current app, that recording is checked on your device and can be played back so you can compare it with the example. The recording stays on your device.
Some builds can turn on optional pronunciation scoring. When that feature is on, the app sends the short recording and the identifier of the word you are practicing to a speech service operated for Memomoon. That service sends the audio to Microsoft Azure Speech, a speech-processing provider, to score the pronunciation and return a transcript, scores, and feedback for that attempt. The service deletes its temporary copy of the recording after it returns the result. These recordings are used to score your practice. The Settings screen in the app says when pronunciation scoring is connected.
Information the app does not collect
Memphys does not collect your name, email address, phone number, contacts, precise location, or advertising identifier. It does not include third-party advertising or analytics software. It reads a photo only when you take one or choose one in the photo picker.
Permissions
- Camera, to photograph an object and learn its Mandarin name
- Photos, to choose an existing photo for the same purpose
- Microphone, to record your pronunciation when you tap Record
Your device asks before the app uses each permission. You can decline, and you can turn a permission off later in your device settings. Lessons that do not need a camera or microphone continue to work.
Information on this website
memomoon.com is a public informational site. It does not offer accounts, and it does not ask you to submit personal information.
When you visit, our host, Vercel, processes connection data such as your IP address, browser type, and the page you requested, in order to deliver the page and keep the site secure. Vercel Web Analytics records visit information, including the page, the referring page, a coarse location such as country, and browser and device type. Vercel Speed Insights records performance measurements such as how quickly a page loads. We use these tools to understand whether the site works. We do not use them to advertise to you, and we do not sell this information.
How we use information
On-device information runs your lessons, reviews, companion, and settings. A pronunciation recording, when scoring is enabled, is used to tell you how that attempt went. Website visit and performance data is used to operate, secure, and improve memomoon.com.
Who we share information with
We do not sell personal information. We do not share it with data brokers or for cross-context behavioral advertising.
- Microsoft. If pronunciation scoring is enabled, Microsoft Azure Speech processes the recording as a service provider and returns a score and transcript for that attempt.
- Vercel. Vercel hosts this website and provides the analytics and performance tools described above.
- Legal requests. We may disclose information when the law requires it, or to protect the rights and safety of Memomoon, our users, or other people.
Learning progress, photos, and ordinary practice recordings remain on your device, so those items are not shared with Memomoon or with the providers above.
Children
Memphys is made for teens and adults. It is not directed at children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided personal information to us, email [email protected] and we will delete it.
Security
Photos, progress, and on-device recordings stay in the app’s private storage. Connections to this website, and any connection to the speech service, use HTTPS.
Your choices
- Decline or revoke camera, photo, and microphone permissions in your device settings.
- Remove a discovery photo inside the app.
- Delete what the app stores by uninstalling Memphys or clearing its storage.
Memphys has no account, so there is no profile for us to export. Questions about this policy can be sent to the address below.
Changes
We will post changes on this page and update the date at the top. If a change expands what Memphys sends off your device, we will describe that practice here before it applies.
Contact
Memomoon LLC
San Francisco, California
[email protected]