Comparison

Sunwick vs Rhythm Fasting

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

Head to head
About

Sunwick

Features
Read full description

Sunwick is a fasting timer for 16:8, OMAD and 72-hour fasts. The timer, every plan, your Home Screen and Lock Screen widgets and your full history are free, forever. Your little flame buddy glows brighter the longer you fast. No account. No ads. Close the paywall and keep going. FAST YOUR WAY • Plans from 12:12, 14:10 and 16:8 to 18:6, 20:4, OMAD (23:1) and 5:2 • Longer fasts: 24, 36, 48 and 72 hours, 5 days and 7 days • Or set your own length • Started earlier? Backdate it. Ate early? Edit the end. Or pick an end time instead of a length. SEE WHERE YOU ARE • A ring that shows your fast and the stage you're in, from digesting and blood sugar settling to switching fuel, ketones rising and beyond • Each stage has an evidence label (established, likely or emerging) and sources you can read • Stage timings are typical averages from research, not measurements of your body ON YOUR LOCK SCREEN AND HOME SCREEN • Live Activity and Dynamic Island while you fast, and while your eating window is open • Small and Medium Home Screen widgets, plus Lock Screen widgets • Controls for Control Center, the Lock Screen and the Action button • Siri and Shortcuts: "Start a fast in Sunwick", "How long have I fasted in Sunwick" • Reminders for your usual start time, the last hour, your goal and each new stage. Act right from the notification: start now, +1 hour, finish or log your weight. YOUR HISTORY, ALL OF IT • Every fast on a calendar, with weekly charts and totals • Streaks with freezes, so one off day doesn't wipe your progress • Badges for milestones • Weight and mood log • Export everything as CSV, or delete it all, any time HELP WHEN IT GETS HARD • Craving SOS: a one-minute breathing break when hunger hits, with no guilt if you decide to eat • Check-ins on long fasts, plus electrolyte and gentle refeed tips • A Learn library of short reads on fasting, sleep, nutrition and more OPTIONAL EATING WINDOW LOG • Off until you turn it on • Log meals by barcode, typing, a nutrition label photo or a meal photo estimate • See how much protein is left for your window • You check and edit every entry before it's saved A BUDDY, NOT A NAG • Name your flame buddy and pick an accessory • It reacts to your fast and cheers when you reach your goal • No "you failed" messages. Ever. SUNWICK PLUS (OPTIONAL) Everything above stays free. Plus adds: • Your weight trend insight: how your 16h+ fasting days line up with your weight • The Large Home Screen widget • 18 extra Learn articles • Up to 40 meal photo estimates a day (the free plan includes 3 a week) Sunwick Plus is an auto-renewing subscription. Prices and any free trial are shown in the app before you buy. Payment is charged to your Apple Account when you confirm the purchase, or when a free trial ends. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel any time in Settings > [your name] > Subscriptions. SAFETY FIRST Sunwick gives general information, not medical advice. It isn't for anyone under 18, anyone pregnant or breastfeeding, or anyone with a history of eating disorders or type 1 diabetes. Talk to a doctor before fasting longer than 24 hours, or if you have a medical condition or take medication. If you feel unwell, eat. Terms of Use: https://sunwick-app.pages.dev/terms Privacy Policy: https://sunwick-app.pages.dev/privacy

About

Rhythm Fasting

This app helps you establish a healthy intermittent fasting routine with a minimalist, ad-free interface. It offers customizable timers, reminders, and progress tracking for weight and body measurements to support your goals.

Highlights
  • One-tap fasting timer
  • Customizable eating windows
  • Weight and body measurement tracking
  • Water intake logging
  • Detailed progress reports
  • Ad-free experience
Features
Read full description

Rhythm Fasting is your smart, minimalist intermittent fasting companion. Start a fast with a single tap, follow your daily eating window, and build a healthy rhythm that actually sticks — no clutter, no ads, just the tools you need. Whether you're new to fasting or a seasoned faster, Rhythm Fasting adapts to you. Choose a plan like 16:8, 18:6, 20:4, or OMAD, set your weekly schedule, and let the timer and reminders keep you on track. WHY YOU'LL LOVE IT • One-tap fasting timer with a live countdown • Clean, distraction-free design — completely ad-free • Works in 10 languages • Your data stays yours, synced privately to your Apple account FASTING MADE SIMPLE • Popular plans built in: 16:8, 18:6, 20:4, OMAD, and more • Set a custom eating window for each day of the week • See your current phase, countdown, and a 24-hour timeline at a glance • Live Activity and a Home Screen widget keep your timer one glance away • Smart reminders for when it's time to fast or eat TRACK YOUR PROGRESS • Log your weight and watch your trend toward your goal • Track body measurements — chest, waist, hips, and more • Water intake tracking with a daily hydration goal • Detailed reports: streaks, success rate, longest fast, and history • Celebrate streak milestones as you stay consistent STAY MOTIVATED • Helpful tips during fasting and eating windows • A weekly summary of how your fasting week went • Gentle nudges so you never lose your streak PRIVATE & YOURS • Sync with your Apple Account and back up to iCloud Drive • Export your data to CSV anytime • No accounts, no tracking, no ads RHYTHM FASTING PRO Upgrade to Pro to unlock advanced fasting plans, body-measurement tracking, detailed analytics, custom weekly scheduling, and smart daily reminders. The core timer and tracking stay free, forever. Build your rhythm. Feel the difference. Download Rhythm Fasting today. -- Intermittent fasting is a lifestyle choice and not medical advice. Consult a healthcare professional before starting any fasting or weight-loss program, especially if you are pregnant, nursing, or have a medical condition.

Screenshots

Sunwick4 screens
Rhythm Fasting4 screens

Verdict

The call

The clearest difference is price: Sunwick at Free against Rhythm Fasting's $9.99. Rhythm Fasting's advantage is ads (none vs shown) and update cadence (every 3 days vs every 5 weeks). On in-app purchases, 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

Sunwick is free to download; Rhythm Fasting costs $9.99 up front. Sunwick sells 2 in-app purchases, starting at $5.99 per 7 days and Rhythm Fasting sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sunwick ships an update every 5 weeks, Rhythm Fasting every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Sunwick versus Rhythm Fasting: the parameters behind the verdict, then further details
ParameterSunwickRhythm Fasting
PriceFree — better$9.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad — better
Requires iOS18.417.6 — better
Further details — not scored
Size40 MB36 MB
Age rating17+4+
DeveloperDansUGC LLCPiyush Ahuja

In-app purchases

2 purchases

Sunwick

Subscriptions2
  • Weekly Subscription.$5.997 Days
  • Yearly Subscription.$49.991 Year
3 purchases

Rhythm Fasting

One-time3
  • Small Tip$0.99
  • Helping developer$4.99
  • Amazing Tip$9.99

Questions

Is Sunwick free?
Sunwick is free to download, with in-app purchases available.
Is Rhythm Fasting free?
Rhythm Fasting costs $9.99, and also offers in-app purchases.
Do Sunwick or Rhythm Fasting have ads?
Sunwick shows ads; Rhythm Fasting does not.
Which is updated more often, Sunwick or Rhythm Fasting?
Sunwick ships an update every 5 weeks, and Rhythm Fasting every 3 days. Most recently, Sunwick was updated on October 28, 2026 and Rhythm Fasting on October 31, 2026.

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