iBlueText vs Firebase Phone Auth
Firebase phone auth is convenient if you already live in Google's ecosystem — but it ties verification to Firebase Auth and its SDKs, costs climb at scale, and it's SMS-only. Here's the practical comparison.
Cost at scale
Firebase phone auth adds up once you're past the free quota, especially internationally. iBlueText is a predictable flat ½¢, lookup included.
No lock-in
Firebase ties phone auth to its Auth product and SDKs. iBlueText is a plain REST API (plus a drop-in widget) you can call from any stack — no SDK, no ecosystem commitment.
iMessage + consent logging
iBlueText delivers iMessage to iPhones and logs an exportable proof-of-consent record on every verification — neither of which Firebase phone auth does.
Related
Frequently asked questions
Can I use iBlueText without Firebase?
Yes — it's a standalone REST API and widget, with no dependency on Firebase or any SDK.
Does Firebase send iMessage codes?
No. iBlueText adds blue-bubble iMessage delivery to iPhones on top of SMS.