Comparison

活動量計HR vs FastFlow

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

Head to head
About

活動量計HR

This app supports daily exercise with heart rate monitoring. It helps maintain motivation by showing step counts and goals at a glance. Data is recorded on the device, allowing for easy transfer and synchronization with your smartphone at home.

Highlights
  • Heart rate monitoring
  • Step tracking
  • Goal setting
  • Data synchronization
  • HealthKit integration
Read full description

毎日の運動をサポートする心拍測定付き活動量計用アプリです。歩数記録や目標が一目で分かるのでモチベーションの継続に役立ちます。本体にデータ記録されるので身軽に外出、自宅でスマホに転送・同期できます。 -iPhoneをお持ちであれば、標準アプリ「ヘルスケア」に同期できます。同期することで見慣れた標準アプリで日々の運動記録を確認することができます。同期するデータは当社をはじめ他の代理店を含む、いかなる第三者にも共有または販売されません。

About

FastFlow

This app helps users manage intermittent fasting schedules with a visual timer and customizable patterns. It also allows for weight tracking, meal logging with photos, and smart notifications to build healthy habits.

Highlights
  • Circular fasting timer
  • Flexible fasting patterns
  • Weight progress graph
  • Meal logging with photos
  • Smart notifications
  • Cloud data sync
Features
Read full description

【Who Is This For?】 • Starting 16:8 intermittent fasting • Want easy fasting time management • Track and visualize weight changes • Achieve autophagy benefits for healthy weight loss 【Key Features】 ■ Beautiful Circular Timer Intuitive display showing remaining fasting or eating time. Elegant design with clear progress visualization. ■ Flexible Fasting Patterns • 16:8 (16-hour fast / 8-hour eating window) • 18:6 (18-hour fast / 6-hour eating window) • 14:10 (14-hour fast / 10-hour eating window) • Custom schedules ■ Weight Progress Graph Record daily weight and visualize changes with line graphs. See your fasting results clearly. ■ Meal Log Document meals with photos. Review what you've eaten anytime. ■ Smart Notifications Get push notifications for fasting start and end times. Build lasting habits effortlessly. ■ Cloud Sync Securely backup your data to the cloud. Transfer seamlessly when switching devices. 【Benefits of Intermittent Fasting】 • Activate autophagy for cellular renewal • Improve insulin sensitivity • Enhance fat burning • Boost focus and mental clarity 【Why FastFlow?】 • 100% free with all features unlocked • Simple, intuitive interface • Privacy-focused design • Clean, distraction-free experience Download now and start your healthy fasting journey!

Screenshots

活動量計HR3 screens
FastFlow4 screens

Verdict

The call

The clearest difference is review sentiment: FastFlow at 100% against 活動量計HR's 20%. 活動量計HR's advantage is ads (none vs shown) and update cadence (monthly vs every 4 months). On price, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

活動量計HR ships an update monthly, FastFlow every 4 months. The most recent releases landed on September 28, 2026 and September 16, 2026 respectively.

Scorecard5 real differences · 3 level
活動量計HR versus FastFlow: the parameters behind the verdict, then further details
Parameter活動量計HRFastFlow
PriceFreeFree
Positive reviews20.0% of reviews100.0% of reviews — better
Update frequencyMonthly — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.1
Further details — not scored
Size34 MB34 MB
Age rating4+12+
DeveloperKashimura Co., Ltd.Caprio Lab

Customer experience

活動量計HR

Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

FastFlow

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

活動量計HR

No in-app purchases

None

FastFlow

No in-app purchases

Questions

Is 活動量計HR free?
活動量計HR is free to download, with no in-app purchases.
Is FastFlow free?
FastFlow is free to download, with no in-app purchases.
Do 活動量計HR or FastFlow have ads?
FastFlow shows ads; 活動量計HR does not.
Which is updated more often, 活動量計HR or FastFlow?
活動量計HR ships an update monthly, and FastFlow every 4 months. Most recently, 活動量計HR was updated on September 28, 2026 and FastFlow on September 16, 2026.

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