Comparison

WaveFast vs Sleep Widget & Tracker

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

Head to head
About

WaveFast

Track your intermittent fasting with a visually engaging and user-friendly interface. This app offers a one-time purchase, no subscriptions, and prioritizes user privacy by storing all data locally. Stay motivated with fluid animations and smart notifications.

Highlights
  • Mesmerizing fluid wave animation
  • Dynamic Island & Live Activities integration
  • History and streak tracking
  • Customizable water themes
  • Body status insights
  • Smart notifications
  • Privacy-focused local data storage
Read full description

Reach your intermittent fasting goals with WaveFast, the most visually stunning and intuitive fasting tracker on the App Store. Say goodbye to bloated apps and expensive monthly subscriptions. WaveFast is built for one thing: tracking your fast with an elegant, fluid interface that makes reaching your goals satisfying and stress-free. Pay once, use forever. No accounts, no data tracking, no subscriptions. CORE FEATURES: 1、Mesmerizing Fluid Animation: Watch your progress rise like water. The calming wave animation reduces anxiety and keeps you motivated. 2、Dynamic Island & Live Activities: Never open the app just to check the time. Keep your fast visible on your Lock Screen and Dynamic Island. 3、History & Streak Tracking: Never lose your progress. WaveFast automatically saves your completed fasts so you can track your journey, view your longest fast, and build your streaks. 4、Custom Water Themes: Personalize your experience with stunning premium colors like Sakura Pink, Aurora Green, and Midnight Purple. 5、Body Status Insights: Know exactly what's happening inside your body—from fat burning to autophagy—based on real-time scientific milestones. 6、Smart Notifications: Get instantly notified when you reach the fat-burning zone and when your goal is achieved. 7、Privacy First: All your data stays locally on your device. We respect your privacy. Available fasting plans include 12h, 14h, 16h, 18h, and 20h. Whether you are a beginner or a seasoned faster doing OMAD, WaveFast is your perfect companion. Start your health journey today, beautifully. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sleep Widget & Tracker

This app offers a straightforward sleep diary using widgets for easy logging. Manually record sleep start and wake times, and adjust entries as needed. It focuses on simple tracking without complex analysis.

Highlights
  • One-tap widget logging
  • Manual sleep start and wake time recording
  • Adjustable sleep logs
  • Nightly history and event timeline
  • Weekly sleep insights
  • Optional iCloud and Apple Health sync
Features
Read full description

Track your sleep with a single tap. Just add the widget to your home or lock screen, tap it when you turn in and when you wake up, and you're done. Sleep tracking doesn't get easier than this. No wearable required. No microphone tracking. No sleep stage claims. Just a calm, manual sleep diary you can correct anytime. HOW IT WORKS • Tap Sleep when you are ready to sleep • Tap Still awake if you have not fallen asleep yet - zZz adjusts your sleep start time automatically • Tap Wake when you get up • Adjust your sleep log anytime WIDGET SLEEP LOGGING zZz helps you log sleep from the places you already use: - Lock Screen widget: track your full sleep flow - Sleep → Still awake → Wake → Review - Home Screen widget: see last night's sleep and weekly average at a glance The widget changes based on your current state, so you always see the next useful action. HANDS-FREE WITH SIRI When the lights are already off, say it instead of tapping: - "Hey Siri, Sleep Widget sleep" - "Hey Siri, Sleep Widget still awake" - "Hey Siri, Sleep Widget I'm up" You can also log bedtime, and go back to sleep after waking in the night. Every command works without opening the app, and your widgets update straight away. All five actions appear in the Shortcuts app too, so you can build them into your own routines - one shortcut that starts your sleep log and turns on Do Not Disturb together. SIMPLE SLEEP TRACKING zZz does not try to guess your sleep stages. It focuses on what you can log reliably: - Sleep start time and wake time - Still awake resets - Sleep duration estimate - Nightly history and event timeline - Weekly insights: average duration, bedtime consistency, wake time trends - 30-day duration chart BUILT FOR REAL LIFE If you tap too early, forget to log, or wake up at a different time, you can edit your sleep session later. Said the wrong thing to Siri? Every session can be edited or deleted afterwards. Add notes and tags to remember what affected your sleep - travel, caffeine, late nights. PRIVATE BY DEFAULT Your sleep data is stored on your device by default. iCloud sync and Apple Health sync are optional. zZz is for people who want a lightweight sleep diary, not a complicated sleep lab. LEGAL Privacy Policy: https://rainbow-heather-30a.notion.site/Privacy-Policy-369894864cb880539fbdea444b48d9f3 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

WaveFast4 screens
Sleep Widget & Tracker4 screens

Verdict

The call

The clearest difference is rating: WaveFast at 5.0 against Sleep Widget & Tracker's 4.5. WaveFast also leads on monetization model (free vs free with in-app purchases). On price, ratings volume, update cadence 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. WaveFast sells 1 one-off in-app purchase and Sleep Widget & Tracker sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

WaveFast holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

WaveFast ships an update every 3 weeks, Sleep Widget & Tracker monthly. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
WaveFast versus Sleep Widget & Tracker: the parameters behind the verdict, then further details
ParameterWaveFastSleep Widget & Tracker
PriceFreeFree
Rating5.0 (1 ratings) — better4.5 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size20 MB24 MB
Age rating9+4+
Developer瑞华 张Huy Nguyen

Customer experience

WaveFast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Sleep Widget & Tracker

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

WaveFast

One-time1
  • WaveFast Pro$4.99
3 purchases

Sleep Widget & Tracker

Subscriptions2
  • Premium Weekly$2.997 Days
  • Premium Yearly$9.991 Year
One-time1
  • Premium Lifetime$1.99

Questions

Is WaveFast free?
WaveFast is free to download, with in-app purchases available.
Is Sleep Widget & Tracker free?
Sleep Widget & Tracker is free to download, with in-app purchases available.
Which has better reviews, WaveFast or Sleep Widget & Tracker?
WaveFast is rated higher. WaveFast averages 5.0 out of 5 from 1 ratings, while Sleep Widget & Tracker averages 4.5 from 2 ratings.
Do WaveFast or Sleep Widget & Tracker have ads?
Neither WaveFast nor Sleep Widget & Tracker shows ads.
Which is updated more often, WaveFast or Sleep Widget & Tracker?
WaveFast ships an update every 3 weeks, and Sleep Widget & Tracker monthly. Most recently, WaveFast was updated on October 19, 2026 and Sleep Widget & Tracker on October 13, 2026.

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