Comparison

Wind Down vs Kettlebell Training App

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

Head to head
About

Wind Down

This app uses a pulsing light projected onto your ceiling to guide your breathing and help you fall asleep faster. It's designed to be used in a darkened room, with adjustable settings for breathing rate and color.

Highlights
  • Pulsing light projection
  • Adjustable breathing frequency
  • Sunset color lighting
  • Adjustable timer
  • Separate settings for men and women
Features
Read full description

zzZ is a calm, ambient breathing light for the end of the day. Free to try. No account. No notifications. Place your iPhone or iPad on the nightstand, follow the glow, and let your breath slow to the rhythm that research has linked to better sleep. THE METHOD Slow-paced breathing at around six cycles per minute — a rate known as "resonance breathing" — is associated in published studies with reduced sleep-onset latency, fewer nighttime awakenings, and greater parasympathetic (rest-and-digest) activity (Laborde et al., 2022; Hamasaki, 2020). A longer exhale than inhale is linked to increased vagal tone and heart-rate variability (Laborde et al., 2024; Jerath et al., 2006). zzZ starts at a comfortable pace (around ten breaths per minute) and gently eases you down to roughly six over two to three minutes — the same descent pattern used in heart-rate-variability biofeedback protocols. You simply follow the breathing orb, or close your eyes and feel the gentle haptic swell on each inhale and exhale. DESIGNED FOR THE NIGHTSTAND - Eyes-closed mode — a gentle haptic pulse marks every inhale and exhale, so you can put the phone face-down and let the rhythm do the rest - Full-screen breath orb — no menus, no chrome, no ads - Melatonin-friendly Red Night theme (plus Warm Amber, Moonglow, Aurora) - Optional ambient bed (pink noise, brown noise, soft rain, or silent) - Optional breath chime cues - Works beautifully on iPad in landscape — a true bedside breathing lamp PRESETS - Sleep Descent — guided 10 → 6 BPM wind-down (default) - Deep Resonance — steady 5.5 BPM, vagal activation - 4-7-8 — the Weil technique - Box — even four-count for calm focus PRIVACY BY DESIGN No third-party tracking. No third-party analytics. No ads. No account required. Completed sessions can optionally be written to Apple Health as Mindful Minutes — all other data stays on your device. ACCESSIBILITY Supports Dynamic Type, VoiceOver labels on controls, and Reduce Motion. WORKS WITH - Apple Health — Mindful Minutes - Siri & Shortcuts — "Hey Siri, start wind-down" - Sleep Focus — run zzZ automatically as part of your wind-down routine SELECTED REFERENCES Laborde S. et al. (2022) Psychophysiological effects of slow-paced breathing at six cycles per minute. Psychophysiology. Hamasaki H. (2020) Effects of diaphragmatic breathing on health: a narrative review. Medicines. Jerath R. et al. (2006) Physiology of long pranayamic breathing. Medical Hypotheses. Lehrer P. & Gevirtz R. (2014) Heart rate variability biofeedback. Frontiers in Psychology. zzZ is a wellness tool and does not diagnose, treat, or cure any medical condition. If you suffer from chronic insomnia, please consult a sleep specialist. SUBSCRIPTION DETAILS Wind Down Pro is available as an auto-renewing monthly subscription or a one-time Lifetime unlock. The monthly plan includes a 7-day free trial; payment is charged to your Apple ID account at the end of the trial and renews monthly unless cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. The Lifetime unlock is a single payment with no renewal. Manage or cancel anytime in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.actnow-gmbh.de/apps/zzz/privacy Made in Germany by ActNow GmbH.

About

Kettlebell Training App

This app offers comprehensive kettlebell workout sessions to enhance cardio fitness, balance, and muscular strength. It features challenges, custom workout builders, and voice coaching for effective home-based training.

Highlights
  • Over 70 kettlebell exercises
  • More than 30 kettlebell workouts
  • 7 unique kettlebell challenges
  • Voice coach
  • Works offline
  • Custom workout builder
Read full description

Kettlebell Workouts provides you with complete kettlebell workout sessions. Boost your cardio fitness, balance, and muscular strength. Discover our Kettlebell Workout Challenges to help you build strength, burn fat, and enhance your overall appearance and well-being. To finish our kettlebell challenges, just execute a few fundamental kettlebell movements every day. The best kettlebell workouts that you may perform at home to burn fat were incorporated into our training routines. Our workouts will challenge your cardiovascular endurance, build strength, and test your kettlebell swing skills. Best part, the only piece of equipment needed is a kettlebell. These workouts can be done at home, at the gym, or even at the beach! We created specific workout programs for beginners and advanced people. App Features: • over 70 kettlebell exercises • more then 30 kettlebell workouts • 7 unique Kettlebell challenges • voice coach • works offline • Workout builder from 270+ exercises Custom Workouts Create your own workouts from 270+ exercise library. Build muscle and gain strength with kettlebell workout. Tips: Select a weight that you're comfortable with. Only increase the weight when a set starts to feel as though it's not challenging you anymore.

Screenshots

Wind Down4 screens
Kettlebell Training App4 screens

Verdict

The call

The clearest difference is price: Kettlebell Training App at Free against Wind Down's $8.99. Kettlebell Training App also leads on review sentiment (75% vs 33%) and iOS requirement (14.0 vs 17.0). Wind Down's advantage is update cadence (every 3 weeks vs every 6 months) and chart position (#186 vs unranked). On ads, in-app purchases and device support 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

Kettlebell Training App is free to download; Wind Down costs $8.99 up front. Wind Down sells 1 one-off in-app purchase and Kettlebell Training App sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Wind Down ships an update every 3 weeks, Kettlebell Training App every 6 months. Both last shipped on October 24, 2026.

Scorecard6 real differences · 5 level
Wind Down versus Kettlebell Training App: the parameters behind the verdict, then further details
ParameterWind DownKettlebell Training App
Price$8.99Free — better
Rating—4.7 (43 ratings) — better
Positive reviews33.3% of reviews75.0% of reviews — better
Number of ratings—43 — better
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#186 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size5 MB37 MB
Age rating17+4+
DeveloperActnow GmbHMuslim Zabirov

Customer experience

Wind Down

Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Kettlebell Training App

All ratings43 ratings
Positive93.0%
Neutral0.0%
Negative7.0%
Written reviews8 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

In-app purchases

1 purchases

Wind Down

One-time1
  • zzz Pro$6.99
1 purchases

Kettlebell Training App

One-time1
  • Lifetime Premium Access$5.99

Questions

Is Wind Down free?
Wind Down costs $8.99, and also offers in-app purchases.
Is Kettlebell Training App free?
Kettlebell Training App is free to download, with in-app purchases available.
Do Wind Down or Kettlebell Training App have ads?
Neither Wind Down nor Kettlebell Training App shows ads.
Which is updated more often, Wind Down or Kettlebell Training App?
Wind Down ships an update every 3 weeks, and Kettlebell Training App every 6 months. Most recently, Wind Down was updated on October 24, 2026 and Kettlebell Training App on October 24, 2026.

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