Wofo · Vocabulary & Facts

Unlock a world of knowledge
and curiosity

Discover amazing facts and powerful words every day, right from your pocket — with clear definitions, real examples and a voice to hear them out loud.

Android
Built for phones
Offline-ready
Saved words stay on-device
Saved to bookmarks
Wofo splash screen Wofo word detail screen showing the word reverent Wofo daily fact screen Wofo bookmarks screen
Hear it spoken
Inside the app

Everything you need to grow your vocabulary

No clutter, no quizzes you didn't ask for — just clean, focused tools for picking up new words and facts.

Instant definitions

Search any word and get a clear, plain-English definition — no dictionary jargon to wade through.

Real example sentences

Every word ships with practical examples, so you understand exactly how — and when — to use it.

Hear the pronunciation

Tap the speaker icon on any word to hear exactly how it's said, out loud.

A fresh fact every day

Flip over to the Facts tab whenever curiosity strikes, for a quick, interesting read.

Bookmark & revisit

Save words and facts you want to remember, and find them all again from your profile.

Works offline

Words you've already opened are saved right on your device, so a shaky connection won't stop you.

Take a look

A peek inside Wofo

Simple onboarding, a fast sign-in, and a focused reading experience for every word and fact.

Wofo splash screen

Splash screen

Wofo sign in screen

Quick sign in

Wofo create account screen

Create your account

Wofo word detail screen

Word detail view

Wofo daily fact screen

A fresh fact daily

Wofo bookmarks screen

Bookmarks

Wofo profile screen

Your profile

Wofo send feedback screen

Send feedback

Ready to expand your vocabulary?

Join Wofo and turn a spare minute into a new word, a new fact, every single day.

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Privacy Policy

Wofo — Vocabulary & Facts · Last updated August 13, 2026

Introduction

Wofo ("we", "us", "our") respects your privacy and is committed to protecting your personal information. This Privacy Policy explains what data we collect, why we collect it, and how we use it.

Account information

To create an account and sign in, we ask for a username and password of your choosing. These credentials are stored in our database and used only to verify your identity when you sign in to Wofo. We do not sell or share your account credentials with third parties.

Permissions and access

Network / internet access

Wofo requires internet access to:

  • Load remote content
  • Connect to Firebase services
  • Send and receive push notifications
  • Perform API requests

This is why the app uses the Android INTERNET permission.

Notifications

Wofo may request permission to send push notifications. Notifications are used for important updates, announcements, and app-related alerts. On Android, this is implemented with POST_NOTIFICATIONS. On iOS, notification permission is requested at runtime via Firebase Messaging.

Data we collect

Notification tokens

To support push notifications, the app may collect a device notification token from Firebase Messaging. This token is used only to deliver notifications to your device and is not used to track you across other apps.

Local storage

The app stores data locally on your device (using Hive) for app settings, saved content and caching. This data stays on your device unless you choose to share it.

Third-party services

We use the following third-party services:

  • Firebase (Firebase Core, Firebase Messaging)
  • Flutter Local Notifications
  • HTTP-based services for network communication

These services may collect usage data under their own privacy policies. You should review Firebase's privacy policy for more details.

Content & AI assistance

Word definitions, example sentences and facts in Wofo are curated with the help of AI tools and may occasionally contain an error. If you spot something that looks wrong, please let us know using the Feedback option in the app — we review and improve the content over time.

What we do not collect

  • Camera access
  • Microphone access
  • Location data
  • Contacts
  • Calendar data
  • SMS or call logs
  • Photo library access
  • Bluetooth access

No unnecessary permissions

We only request the permissions needed for the app's core features. If you disable notifications, the app will continue to function normally without receiving push notifications.

Data retention & security

We use reasonable administrative and technical safeguards to help protect the information stored in our database, and we keep it only for as long as your account remains active or as needed to provide the app's features. That said, no method of electronic storage or transmission is 100% secure, and we cannot guarantee absolute security.

Children's privacy

Wofo is not directed at children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us and we will take steps to remove it.

Changes to this policy

We may update this Privacy Policy from time to time. Changes will be reflected on this page with an updated "last updated" date, so please check back periodically.

Contact

If you have questions about this policy or your data, please contact us at:

Want to delete your account? Visit our Support page.

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Support

Get help, send feedback, or request account deletion — Wofo · Vocabulary & Facts

Contact support

Questions, bug reports, or feedback about Wofo — we'd like to hear from you. Reach us by email and we'll get back to you.

Delete your account

You're always free to leave. To request deletion of your Wofo account, tap the button below to open an email addressed to us, and include the User ID shown on your profile (for example yourname#1234) so we can find your account.

What gets deleted

Once we confirm your request, we remove your account credentials and any bookmarks tied to your account from our database. See our Privacy Policy for details on what we store and for how long.

Response time

We typically respond to support and account deletion requests within 5 business days.