Time covers ICEBlock with a really deceptive title:
The only person in the story how hates it is Acting ICE Director Todd Lyons. You know Todd, he's the guy who defends having all of his agents wear masks, and who is fearmongering -- without presenting the slightest amount of evidence that ICE agents' children are now being targeted. (One reason for doubting this story is that WJBC, which first ran with it, has abruptly taken the post down.
At any rate, the ICEBlock app is available through the Apple App Store. There is no Android version because the app is intentionally designed NOT to collect or save identifying user data, and you apparently can't do that on android:
Here's what the app does: