Comparison

Parallel Rest Timer vs WaveFast

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

Head to head
About

Parallel Rest Timer

Features
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I built this app because I was tired of overly complicated workout trackers. I didn't want to click through menus logging my reps, sets, and weight records just to finally start a simple rest timer. If you just want to start your workout and time your breaks, this is the app for you. It does exactly what it says: lets you start a workout session and run multiple rest timers at the same time, right from your wrist. What it does: - Closes your rings: It starts a real watchOS workout session, so your heart rate is tracked and your active calories count toward your Apple Health rings. - Phone-free: Works entirely on your Apple Watch so you can leave your phone in your locker or at home. - Concurrent timers: Run multiple break timers in parallel. - Not just for lifting: You can select different activity types, making it just as useful for running, HIIT, yoga, or any other workout outside the weight room. - 100% Private: This app maximizes your privacy. It doesn't even ask for internet access, requires no accounts, and does zero tracking. Your data never leaves your device. No fluff, no mandatory data entry, and no tracking. Just start your activity, and time your rests.

About

WaveFast

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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/

Screenshots

WaveFast4 screens

Verdict

The call

The clearest difference is in-app purchases: Parallel Rest Timer at none against WaveFast's 1. Parallel Rest Timer also leads on update cadence (weekly vs every 3 weeks). On price, ads, 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. WaveFast sells 1 one-off in-app purchase. Parallel Rest Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Parallel Rest Timer ships an update weekly, WaveFast every 3 weeks. The most recent releases landed on September 18, 2026 and September 14, 2026 respectively.

Scorecard2 real differences · 4 level
Parallel Rest Timer versus WaveFast: the parameters behind the verdict, then further details
ParameterParallel Rest TimerWaveFast
PriceFreeFree
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.017.6 — better
Further details — not scored
Size7 MB20 MB
Age rating4+9+
DeveloperRemigiusz Herba瑞华 张

In-app purchases

None

Parallel Rest Timer

No in-app purchases

1 purchases

WaveFast

One-time1
  • WaveFast Pro$4.99

Questions

Is Parallel Rest Timer free?
Parallel Rest Timer is free to download, with no in-app purchases.
Is WaveFast free?
WaveFast is free to download, with in-app purchases available.
Do Parallel Rest Timer or WaveFast have ads?
Neither Parallel Rest Timer nor WaveFast shows ads.
Which is updated more often, Parallel Rest Timer or WaveFast?
Parallel Rest Timer ships an update weekly, and WaveFast every 3 weeks. Most recently, Parallel Rest Timer was updated on September 18, 2026 and WaveFast on September 14, 2026.

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