The link provided by @vshymanskyy shows following:
Introduction - Blynk Documentation
I have a project which is in 2 weeks about 1000km away from me, to observe and control the heater in a house. It is possible to maintain the system once a year for two weeks.
What should i do?
- How long is Blynk 0.1 maintained?
- How long is the app of Blynk 0.1 in the app-stores present?
- Is there a timeline?
Surely, it was announced in the forum, but i never saw that.- Now i saw the announce in the “old” Blynk app.
- Do i have to migrate my old project rapidly without longer testing phase or should i setup my own server?
Note, i have 22k unused Blynk energy left 
.
Is it true the old ones are running further, like also shown in the picture posted here?