Google Health (Fitbit) vs Period Calendar Period Tracker

Google Health (Fitbit)

Google
App Store
$1.56M/mo
~$18.67M/yr · 101.6M installs
VS

Period Calendar Period Tracker

Simple Design Ltd.
Google Play
$4.62M/mo
~$55.48M/yr · 222.1M installs
Revenue winner Period Calendar Period Tracker wins +197% vs other
Installs winner Period Calendar Period Tracker wins +119% vs other
MAU winner Period Calendar Period Tracker wins +14% vs other
Rating winner Period Calendar Period Tracker wins +9% vs other

Why Period Calendar Period Tracker is winning

Top 4 reasons - backed by the public App Store / Play Store numbers.

  1. Period Calendar Period Tracker earns roughly 3× more per month than Google Health (Fitbit) - $4.62M vs $1.56M.
  2. Aggressive pricing. Period Calendar Period Tracker undercuts at $7.71/mo vs $9.99/mo - converts a higher % of free users.
  3. Bigger install base. Period Calendar Period Tracker has ~222.1M lifetime installs vs Google Health (Fitbit)'s ~101.6M - 2.2× the funnel top.
  4. Better app store reviews. Period Calendar Period Tracker sits at 4.89★ vs 4.49★ - store algorithms reward higher-rated apps with more impressions.

→ Find more apps with this revenue gap · Full Period Calendar Period Tracker report

Side-by-side metrics

Bars scale to whichever app is bigger on that row. Green = winner.

Google Health (Fitbit)
vs
Period Calendar Period Tracker
Monthly revenue (est.)?
$1.56M
▶
$4.62M
Annual revenue (est.)
$18.67M
▶
$55.48M
Lifetime installs (est.)
101.6M
▶
222.1M
Monthly active users (est.)?
7.2M
▶
8.2M
App Store rating
4.49★
▶
4.89★
Total ratings
677K
▶
4.9M
US grossing rank
-
=
-
Cheapest monthly sub
$9.99
◀
$7.71
IAP tiers detected
2 tiers
◀
0 tiers

Google Health (Fitbit)

Google
App Store
Category
Health & Fitness
Price
Free
Released
Oct 18, 2011
Last updated
Jun 23, 2026
File size
548.8 MB
Content rating
4+
Version
5.02.1
Languages
Bulgarian, Croatian, Czech, Danish, Dutch, English +26 more
View full Google Health (Fitbit) report →

Period Calendar Period Tracker

Simple Design Ltd.
Google Play
Category
Health & Fitness
Price
Free
Released
Mar 16, 2012
Last updated
Jun 29, 2026
File size
-
Content rating
Everyone
Version
VARY
Languages
-
View full Period Calendar Period Tracker report →

Google Health (Fitbit) trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Period Calendar Period Tracker trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Related app pages

Google Health (Fitbit) App Store page →Period Calendar Period Tracker Play Store page →

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FAQ

Which makes more money, Google Health (Fitbit) or Period Calendar Period Tracker? v
Period Calendar Period Tracker earns about $4.62M per month, while Google Health (Fitbit) earns about $1.56M. That is a 3.0× revenue gap (~$3.07M more per month for Period Calendar Period Tracker). Annual revenue: Google Health (Fitbit) ≈ $18.67M/year, Period Calendar Period Tracker ≈ $55.48M/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Google Health (Fitbit) or Period Calendar Period Tracker? v
Period Calendar Period Tracker leads with about 222.1M estimated downloads vs 101.6M for Google Health (Fitbit) - a 2.2× gap. Google Health (Fitbit)'s App Store downloads are estimated from 677K ratings × the standard 1:75 ratio. Period Calendar Period Tracker reports 100,000,000+ installs on Google Play.
Are Google Health (Fitbit) and Period Calendar Period Tracker in the same App Store category on each store and competing for the same money? v
Yes - both apps sit in the Health & Fitness category, which means they compete directly for the same paying users and category-level wallet share. Direct competitors, head-to-head.
What in-app purchases and subscription pricing do Google Health (Fitbit) and Period Calendar Period Tracker offer? v
Google Health (Fitbit): IAP range 2 tiers detected. Period Calendar Period Tracker: IAP range $0.99 - $59.99 per item. Google Health (Fitbit) runs a "Subscription (~$6.67/mo)" monetization model; Period Calendar Period Tracker runs "Subscription (~$7.71/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Google Health (Fitbit) or Period Calendar Period Tracker? v
Period Calendar Period Tracker edges ahead with ★ 4.9 vs ★ 4.5 (gap of 0.4 stars). Rating volume: Google Health (Fitbit) 677K ratings, Period Calendar Period Tracker 115K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Google Health (Fitbit) vs Period Calendar Period Tracker revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $1.56M for Google Health (Fitbit) and $4.62M for Period Calendar Period Tracker are derived from App Store grossing rank / Google Play install ranges, scraped IAP tiers, ratings volume and category benchmarks (Health & Fitness) - net of the 15-30% Apple/Google store cut. Real revenue depends on country mix, retention, refunds and ad fill rate, none of which Apple or Google publish.
How do I compare Google Health (Fitbit) or Period Calendar Period Tracker to a different App Store app? v
Use the search box at the bottom of this page or paste any two App Store or Google Play links into the homepage tool. We auto-generate a permanent comparison URL with revenue, downloads, IAP tiers, subscription pricing and grossing rank for both apps.