Comparison

FastFlow vs YOHAKU

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

Head to head
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!

About

YOHAKU

Features
Read full description

「食べない時間」を、心地よい習慣に。 YOHAKUは、忙しい毎日の中でも無理なく続けられる、シンプルで上質なファスティングアプリです。 断食(インターミッテント・ファスティング)は、食べる「内容」ではなく「時間」を整えることで、自然に体と生活リズムを整える習慣です。 YOHAKUは、その習慣化をやさしくサポートします。 ■ 主な機能 ・ファスティングタイマー ワンタップで断食を開始・終了。現在の状態が一目でわかります。 ・シンプルなプラン設計 16:8・14:10などの基本プランから、自分に合った時間を自由に設定できます。 ・進捗の見える化 断食時間や履歴を記録し、日々の積み重ねを可視化します。 ・リマインド通知 無理なく続けるためのやさしい通知で、習慣化をサポートします。 ・ミニマルなUI 余白を大切にしたデザインで、ストレスなく使えます。 ■ YOHAKUの特徴 ・頑張らなくても続く「ゆるい健康習慣」 ・余計な機能を削ぎ落とした、静かで洗練された設計 ・忙しい人でも無理なく取り入れられるシンプルさ ■ こんな方におすすめ ・忙しくて食事管理が続かない ・無理なダイエットはしたくない ・生活リズムを整えたい ・シンプルで上質なアプリを使いたい ■ コンセプト 「余白をつくると、整う。」 食べない時間は、ただの我慢ではなく、 体と心をリセットするための大切な余白です。 YOHAKUは、その時間を心地よく過ごすためのアプリです。 プライバシーポリシー:https://absorbing-maple-da2.notion.site/32bb128a6d8d80e190eac92947bb3bca?source=copy_link 利用規約:https://absorbing-maple-da2.notion.site/32cb128a6d8d80e3bd71c5775550d712?source=copy_link お問い合わせ先:https://forms.gle/MQaEocjVnx6Ajws2A

Screenshots

FastFlow4 screens
YOHAKU4 screens

Verdict

The call

The clearest difference is in-app purchases: FastFlow at none against YOHAKU's 2. YOHAKU's advantage is ads (none vs shown) and update cadence (every 6 days vs every 4 months). On price, device support and iOS requirement 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. YOHAKU sells 2 in-app purchases, starting at $4.99 per month. FastFlow asks for nothing beyond the download.

UpkeepUpdate frequency

FastFlow ships an update every 4 months, YOHAKU every 6 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 5 level
FastFlow versus YOHAKU: the parameters behind the verdict, then further details
ParameterFastFlowYOHAKU
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 4 monthsEvery 6 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size34 MB38 MB
Age rating12+4+
DeveloperCaprio LabTOMOHIRO WADA

In-app purchases

None

FastFlow

No in-app purchases

2 purchases

YOHAKU

Subscriptions2
  • YOHAKU プレミアム(月額)14 Days trial$4.991 Month
  • YOHAKU プレミアム(年額)14 Days trial$24.991 Year

Questions

Is FastFlow free?
FastFlow is free to download, with no in-app purchases.
Is YOHAKU free?
YOHAKU is free to download, with in-app purchases available.
Do FastFlow or YOHAKU have ads?
FastFlow shows ads; YOHAKU does not.
Which is updated more often, FastFlow or YOHAKU?
FastFlow ships an update every 4 months, and YOHAKU every 6 days. Most recently, FastFlow was updated on October 3, 2026 and YOHAKU on October 8, 2026.

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