About this app
EF: ejection fraction, an iPhone and Apple Watch application, can calculate ejection fraction easily. Teichholz formula is used to calculate EF.
Latest release
What’s New
Version 1.1
Jan 3, 2022
Added the privacy policy
Audience growth
Ratings growth
7-day gain
+0
Ratings / day
0.0
30-day gain
+0
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
Current
Free
Historical low
Free
Paid → free
0×
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 12, 2026 · 5:16 PM Free
Screenshots
