ERO Study Apps
Two free study apps: immigration law for the ERO academy, and practical field Spanish. Short lessons, multiple-choice checks, review cards, scenarios and practice tests. Your progress is saved on your own phone or computer.
ERO Academy Prep
Immigration law, the INA and 8 CFR, arrests and the Fourth Amendment, detention standards and report writing. Every fact shows its source.
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Spanish for the Field
Phrases officers actually use, with native audio: greetings, commands, vehicle stops, medical questions and processing.
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Install it like an app
- iPhone: open an app above in Safari, tap the Share button, then Add to Home Screen.
- Android: open an app above in Chrome, tap the ⋮ menu, then Add to Home screen or Install app.
- Computer: open an app above in Chrome or Edge and click the install icon at the right end of the address bar. Or just bookmark it.
After the first visit it works without signal.
Unofficial study aid. Not created, reviewed or endorsed by ICE, DHS or FLETC. Your academy instruction, materials and agency policy always come first. Law content was checked against the U.S. Code, the eCFR and court opinions as of 16 Oct 2026.