Comparison

QoFast vs Vasten

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

Head to head
About

QoFast

Features
Read full description

Tired of dieting without results? Lose weight naturally with intermittent fasting instead of counting calories, and go further than any other app when you're ready. THE ONLY APP FOR BOTH INTERMITTENT AND EXTENDED FASTING QoFast is built for the full journey: daily 16:8 windows AND multi-day extended fasts with a guided Prep > Fast > Refeed structure. Most apps stop at 24 hours. QoFast safely takes you to 3, 5, even 7 days. SEE YOUR METABOLISM IN REAL TIME Watch your body move through 13 milestones as you fast: Fed > Fat Burning (4h) > Ketosis (12h) > Autophagy (24h) and beyond. Real-time metabolic-zone education tells you exactly what's happening inside you, with milestone notifications at every stage. FASTING PLANS FOR EVERY LEVEL - 16:8, 18:6, 20:4 and OMAD (one meal a day) - Extended 3, 5 and 7-day fasts with prep and refeed guidance - Fully custom schedules, including fasts over 24 hours (Pro) A SMART FASTING TIMER THAT LIVES WHERE YOU DO - Live Activity and Dynamic Island: your timer on the lock screen, always a glance away - Apple Watch app and Wear OS support - Apple Health and Health Connect sync COMPLETE FASTING TRACKER - Log water, mood and energy - Stats, heatmaps, streaks and notes - CSV export of your full history (Pro) FREE VERSION Track intermittent fasts, use the metabolic timer, log water and mood, and build streaks. Free, forever. QoFast PRO Unlock extended multi-day fasts, auto-cycling schedules, unlimited history and analytics, custom fasts over 24 hours, and CSV export. SUBSCRIPTION QoFast Pro is available as a weekly, monthly or yearly subscription, with a 7-day free trial on eligible plans. Current prices are shown in the app before you confirm your purchase. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. DISCLAIMER QoFast is for informational purposes only and is not medical advice. Consult your doctor before starting any fast, especially extended or multi-day fasts, or if you are pregnant, nursing, or have a medical condition. Support: info@qorinx.com Privacy Policy: https://qofast.com/privacy Terms of Use (EULA): https://qofast.com/terms

About

Vasten

Features
Read full description

Vasten does one job well: it keeps an accurate record of your fast. Start in one tap, see elapsed time and your goal on the main screen, and keep the timer visible through a Home Screen widget, Lock Screen Live Activity, and Dynamic Island. Reaching the goal never ends the fast automatically—you decide when it ends. Your history remains useful and under your control. Correct start and end times, review simple totals, import Vasten JSON or Zero history, export everything as JSON or CSV, or delete any record. Features: • One-tap start with an adjustable start time • Custom fasting goals from 1 to 168 hours • Clear widget goal progress and goal end times • Lock Screen and Dynamic Island Live Activity • Small and medium Home Screen widgets • Separate timer and 12-week fasting-activity widgets • Custom accent colors shared across the app and widgets • Editable history and summary statistics • Configurable local goal-time notification • Vasten JSON and Zero fasting-history import • Private device storage with private iCloud synchronization • JSON and CSV export • English and Dutch • No account, ads, analytics, or subscription Stage labels are general educational time ranges. They are not measurements of your body or medical advice.

Screenshots

QoFast4 screens
Vasten4 screens

Verdict

The call

The clearest difference is in-app purchases: Vasten at none against QoFast's 3. Vasten also leads on update cadence (every 2 days vs every 6 days). QoFast's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.5). On price and ads 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. QoFast sells 3 in-app purchases, starting at $2.99 per 7 days. Vasten asks for nothing beyond the download.

UpkeepUpdate frequency

QoFast ships an update every 6 days, Vasten every 2 days. The most recent releases landed on October 28, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 2 level
QoFast versus Vasten: the parameters behind the verdict, then further details
ParameterQoFastVasten
PriceFreeFree
Update frequencyEvery 6 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better26.5
Further details — not scored
Size75 MB2 MB
Age rating17+4+
DeveloperQorinx OUDennis Van Dalen

In-app purchases

3 purchases

QoFast

Subscriptions3
  • QoFast Pro$2.997 Days
  • QoFast Pro7 Days trial$9.991 Month
  • QoFast Pro7 Days trial$49.991 Year
None

Vasten

No in-app purchases

Questions

Is QoFast free?
QoFast is free to download, with in-app purchases available.
Is Vasten free?
Vasten is free to download, with no in-app purchases.
Do QoFast or Vasten have ads?
Neither QoFast nor Vasten shows ads.
Which is updated more often, QoFast or Vasten?
QoFast ships an update every 6 days, and Vasten every 2 days. Most recently, QoFast was updated on October 28, 2026 and Vasten on October 6, 2026.

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