Official line
Digits shutting down as Fabric moves to Firebase.
X (Twitter) · Developer Tools · Product
Digits
Discontinued
2014–2017 · 3 years in market
Launched
Oct 1, 2014
Discontinued
Sep 1, 2017
Cause of death
Acquired, then shut down
Evidence
Unsourced
What was it?
Phone-number auth for apps, part of Fabric. Sold to Google and retired.
Why it died
Editorial reading
Twitter did not want to be an identity vendor. Google already was.
Founder takeaway
Developer identity is a platform business. Side-quest SDKs get sold.
Sources
Unsourced — editorial reading
No primary source is attached yet. Treat the interpretation as editorial, not a citation.
What replaced it
Google
Firebase Auth
Where Fabric’s identity story landed.
Related graves
Same company, category, or cause of death.
X (Twitter)
RIP
Crashlytics (Twitter era)
2011–2017 · 6 yrs
The crash reporter Twitter owned via Crashlytics/Fabric, then sold. Still alive — just not at X.
Developer Tools/Acquired, then shut down+40
X (Twitter)
RIP
Periscope
2015–2021 · 6 yrs
Livestreaming before it was a button in every app. Acquired, integrated, then starved.
Video/Acquired, then shut down+30
X (Twitter)
RIP
Fabric
2014–2017 · 3 yrs
Twitter’s mobile developer platform (Crashlytics, Answers, Digits). Sold to Google, absorbed into Firebase.
Developer Tools/Acquired, then shut down+20
X (Twitter)
RIP
MoPub
2010–2021 · 11 yrs
A mobile ad exchange Twitter bought, then sold to AppLovin as it retreated from ad infra.
Advertising/Acquired, then shut down+12