Comparison

FastZen vs Health Share App

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

FastZen

This app helps you track your fasting schedule with customizable durations and daily adjustments. It offers a preview of your upcoming week and allows you to repeat start times on chosen weekdays. The widget and Live Activity provide convenient access to your current session.

Highlights
  • Customizable fast durations (1-48 hours)
  • Daily schedule adjustments
  • 7-day weekly preview
  • Repeat start times on weekdays
  • Home Screen widget
  • Live Activity for Lock Screen
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FastZen tracks your fast and lets you move one date without rewriting your weekly routine. Dinner running late? Adjust that day and keep the rest of your week. Preview the next 7 days, including start times, planned finishes and rest days. โ€ข Start a 16:8, 18:6, 20:4 or OMAD (23-hour) fast. โ€ข Set a custom duration from 1 to 48 hours. โ€ข See elapsed time, remaining time and your planned finish. โ€ข Review completed sessions and correct their times. โ€ข Repeat one start time on the weekdays you choose. Your active session stays saved when you close the app. No account, no ads and no server sync. The widget puts your fast on the Home Screen. On iPhone, a Live Activity shows your session on the Lock Screen for up to 8 hours, the iOS limit. The session stays saved in the app. FastZen is a tracking tool, not medical advice or a promise of weight loss. Custom Week is a one-time purchase with no subscription. It unlocks a separate plan and start time for each weekday, rest days, and changes to a single date without changing your recurring week. People who used FastZen before version 1.1.0 keep that access without paying.

About

Health Share App

Features
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HealthShare moves your Apple Health data into your own Google Drive โ€” automatically, in the background, in a structured format your clinic, coach, or research project can actually use. If you've ever tried to share HealthKit data with a doctor or pull it into a personal project, you know the problem: it stays locked inside the Health app. HealthShare unlocks it without compromising privacy. Your data never touches our servers. It goes from your iPhone directly into your own Drive. WHAT IT DOES - Continuous background sync of heart rate, HRV, sleep, steps, workouts, blood oxygen, active energy, and resting HR - Atomic exports to a folder you control in Google Drive - Structured JSON with sidecar manifests โ€” easy to parse, easy to audit - 30-day trend dashboard for resting HR, HRV, sleep quality, and activity - Custom export windows: last 30 days, last year, or any date range - Per-metric toggles โ€” share only what you want WHO IT'S FOR - Patients sharing data with clinics or physiotherapists - Athletes tracking long-term performance trends - Researchers and developers building on personal health data - Anyone who wants their own data out of a closed app HealthShare is not a medical device and does not provide diagnosis, treatment, or clinical advice. It moves data; it doesn't interpret it.

Screenshots

FastZen4 screens
Health Share App3 screens

Verdict

The call

The clearest difference is in-app purchases: Health Share App at none against FastZen's 1. FastZen's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. FastZen sells 1 one-off in-app purchase. Health Share App asks for nothing beyond the download.

UpkeepUpdate frequency

FastZen ships an update weekly, Health Share App every 10 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard2 real differences ยท 6 level
FastZen versus Health Share App: the parameters behind the verdict, then further details
ParameterFastZenHealth Share App
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyWeekly โ€” betterEvery 10 days
AdsNoNo
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.0 โ€” better26.5
Further details โ€” not scored
Size3 MB5 MB
Age rating4+4+
DeveloperBenjamin DupinAleksandr Kaigorodov

In-app purchases

1 purchases

FastZen

One-time1
  • FastZen Custom Week$5.99
None

Health Share App

No in-app purchases

Questions

Is FastZen free?
FastZen is free to download, with in-app purchases available.
Is Health Share App free?
Health Share App is free to download, with no in-app purchases.
Do FastZen or Health Share App have ads?
Neither FastZen nor Health Share App shows ads.
Which is updated more often, FastZen or Health Share App?
FastZen ships an update weekly, and Health Share App every 10 days. Most recently, FastZen was updated on November 11, 2026 and Health Share App on November 5, 2026.

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