Why online apps fail on the go
Relying on a constant internet connection creates friction right when you have time to study:
- Loading screens. Waiting for audio to buffer or images to download breaks the flow of spaced repetition.
- Data-heavy ads. Free tiers often rely on video ads. On a limited data plan, learning vocabulary shouldn't cost you gigabytes.
- Airplane mode blocks everything. If you travel frequently, flights are perfect for uninterrupted study. Online apps become useless here.
- Required logins. Apps that verify your session with a server can suddenly lock you out if your signal drops in the subway.
What to look for in an offline app
Not all offline modes are created equal. A true offline app should give you:
- The full vocabulary base. You shouldn't have to remember to "download for offline use" before every trip.
- Audio on every card. Text-only offline modes are common, but you need to hear the language to learn it properly.
- On-device speech recognition. This is rare. Most apps send your voice to a server to check pronunciation, meaning speaking practice stops working offline.
How Hola Cards works offline
Hola Cards was built to be fully functional without an internet connection. The entire database of over 2,300 Spanish flashcards—complete with translations, transcripts, and example sentences—is bundled with the app.
Crucially, the audio for every single card is included. Even the speech recognition runs entirely on your device using a local model, meaning you can practice your pronunciation in airplane mode. Your voice data never leaves your phone.
The mobile app is free to download and can be used without an account. Core study works offline after the required content and speech models are downloaded. Ads and account or subscription synchronization can use the internet; Premium removes ads.
Common questions
Does voice recognition work in airplane mode?
Yes, in Hola Cards it does. The app uses an on-device speech recognition model (Vosk) that processes your voice locally, so speaking practice works perfectly without internet.
Will the app use my mobile data?
Core study in the mobile app works offline after the required content and speech models are downloaded. Ads and account or subscription synchronization can use mobile data when an internet connection is available. Premium removes ads; using the app without an account does not by itself prevent network traffic.
Do I need to manually download offline packs?
No, the complete dictionary and audio for all core words are bundled when you install the app from the store.
