Comparison

Sleep Bug Pro vs ZenActivity

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

Head to head
About

Sleep Bug Pro

This app offers a wide variety of ambient soundscapes and white noise to help users relax, concentrate, or fall asleep. It features a diverse collection of high-quality scenes and individual sound effect adjustments for a personalized experience.

Highlights
  • 24 high-quality sound scenes
  • Over 300 individual sounds
  • Customizable sound mixing
  • Background playback
  • Sleep timer
  • Individual volume control
  • No ads
Read full description

One of the best rated white noise machines on the market. Superior in sound contents: 24 scenes, 83 different sound effects and more than 300 different sounds ensure that everyone will find an ambience matching their needs. Sleep Bug Pro is an ambient sound mixer that produces a variety of scenes and music with random sound effects. The built-in sound generator creates a realistic listening experience to help calm a busy mind and is perfect for adults, children, and babies who are having trouble sleeping. You can also use Sleep Bug Pro in the office to mask out distracting noises, improve concentration, and increase privacy. So don’t delay, try Sleep Bug Pro today. Improve your mind and improve your life, through sound! More than 3.500.000 users worldwide! With a rating average of 4.75/5.00 Sleep Bug Pro is one of the best rated white noise machines in the App Store. Try it out today! ------------------------------------- -- FEATURES -- - 24 High quality scenes each with multiple sound effects. - Play scenes in the background while using other apps. - High quality retina graphics. - Clock and date display. - Sleep timer. - Individual volume adjustment for each sound effect. - Accessibility support. - No ads! - GREAT USER SUPPORT! ------------------------------------ -- 24 SCENES -- Available for iPhone, iPod and iPad. Sleep Bug Pro includes the following scenes: Beach – With birds, ship horn, chimes and waves Music Box – With bells, birds, guitar and piano Zen – With hok, bamboo, drum, strings and chants (zen scape without voices) Zen Garden – With hok, bamboo, drum and strings River – With birds, insects, frogs, lightning and wind Forest – With birds, wolves, eagles, bird wings and music beats Jungle – With tigers, parrots, drums, monkeys and frogs Classical – With violins, cello, drums and solo violin Fire – With birds, burning wood, crickets, lightning, wind and owls Waterfall – With streams, trees and birds Weather – With lightning, rain and wind Lullaby - With birds, chimes, wind and waves Horror – With ghosts, screams, chains, doors and owls City – With bicycles, birds, motorbikes and cars Clock - With chimes, mechanical and pound Dreams – With bass, bells, pad loop, pads and organ Train – With carriages, horns and passing trains Sci-fi – With static noises, voices, flares, U.F.O’s and space wind Airport – With planes taking off, music and announcements Outback – With snakes, didgeridoo and chimes Winter – With ice cracking, walking in the snow, bells, music and pads White Noise – With pads, 528Hz noise, wind and waves Underwater – With sonar, whales and bubbles Dark Drone – With storms, aggressive additions & mellow additions ------------------------------------- -- CUSTOMER REVIEWS -- In love! - Absolutely love this app!! Use it every night!! Great app! Very soothing for baby and parents! Such a great app, simple and easy to use. I was snoring 5 minutes after buying it. Wonderful sound machine to relax, sleep, meditate or just unwind. Highly recommended. ------------------------------------- To learn more, check out our webpage at: http://www.sleepbug.com

About

ZenActivity

Create and save custom interval timers for workouts, yoga, and meditation. This app offers extensive customization for exercise and rest periods, allowing you to build up to five unique routines with unlimited steps. Enjoy background operation and music integration for a seamless practice.

Highlights
  • Save up to 5 workout routines
  • Unlimited customizable steps per routine
  • Second-level interval customization
  • Background operation with music support
  • ZEN-mode for distraction-free timing
  • Airplay support for Apple TV
Features
Read full description

ZenActivity is a powerful, beautifully designed workout timer built for people who want total control over their routines—without complexity. Whether you’re practicing yoga, training MMA, building strength, or meditating, ZenActivity adapts to your flow with precision timing, flexible structure, and a calm, focused experience. Design your workouts exactly the way you want, follow them effortlessly, and track your progress over time. Build Your Perfect Routine • Create unlimited workouts, each with a custom name and type • Add unlimited steps per workout with full control over sequence and structure • Categorize steps: Exercise, Stretch, Rest, Meditation, Weights, Cardio, Core, Kettlebells • Set exact durations down to the second (hours, minutes, seconds) • Reorder steps with intuitive drag-and-drop • Duplicate or delete steps instantly with simple gestures Effortless Workout Experience • Clean, distraction-free running screen with workout name and icon • Tap to play or pause your session • Pinch to exit quickly • Runs smoothly in the background while you listen to music • Optional sounds, vibration, and volume per step • Activate Zen Mode for a minimal, distraction-free timer • Subtle haptics reinforce state changes without breaking focus Smart Reminders • Set reminders for individual workouts • Flexible scheduling: daily, weekdays, or weekly with notifications with sound and banner support Track Your Progress • Automatic workout logging • Visual statistics with 7, 30, and 90-day views • Identify your most consistent and top workouts Home Screen Widget • “Favorite Workouts” widget in multiple sizes • Instantly launch workouts directly from your Home Screen Designed for Real Practice ZenActivity is trusted by yoga practitioners, meditation enthusiasts, athletes, and trainers who want a reliable, customizable timer that stays out of the way and supports their rhythm. It’s equally suited for: • Yoga and breathwork • HIIT and interval training • Boxing and MMA • Strength and conditioning • Meditation and progressive relaxation Thoughtful Design • Intuitive interface that’s easy to learn and fast to use • Clean visuals that feel both calming and energizing • Built-in help to guide you through every feature ZenActivity doesn’t just time your workouts—it supports your discipline, focus, and consistency. Let it guide your daily practice.

Screenshots

Sleep Bug Pro4 screens
ZenActivity4 screens

Verdict

The call

The clearest difference is update cadence: Sleep Bug Pro at monthly against ZenActivity's every 13 months. Sleep Bug Pro also leads on review sentiment (95% vs 65%) and rating (4.9 vs 4.5). ZenActivity's advantage is iOS requirement (14.0 vs 16.0). On ratings volume, 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

Sleep Bug Pro costs $1.99 and ZenActivity $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sleep Bug Pro holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 132 and 58 respectively. Written reviews point the same way: 95% of Sleep Bug Pro's written reviews are positive against 65% of ZenActivity's.

UpkeepUpdate frequency

Sleep Bug Pro ships an update monthly, ZenActivity every 13 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
Sleep Bug Pro versus ZenActivity: the parameters behind the verdict, then further details
ParameterSleep Bug ProZenActivity
Price$1.99 — better$3.99
Rating4.9 (132 ratings) — better4.5 (58 ratings)
Positive reviews94.8% of reviews — better65.4% of reviews
Number of ratings132 — better58
Update frequencyMonthly — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.014.0 — better
Further details — not scored
Size225 MB13 MB
Age rating4+4+
DeveloperArnt-Henning MobergGary Saggu

Customer experience

Sleep Bug Pro

All ratings132 ratings
Positive97.7%
Neutral1.5%
Negative0.8%
Written reviews270 reviews
Positive94.8%
Neutral1.9%
Negative3.3%

ZenActivity

All ratings58 ratings
Positive86.2%
Neutral8.6%
Negative5.2%
Written reviews26 reviews
Positive65.4%
Neutral19.2%
Negative15.4%

Bugs and requests

Sleep Bug Pro

Reported bugs

3 issues
  • Sudden sound stopping wakes up users
  • Compatibility issues with newer devices
  • Unreliable background playback

Requested features

5 requests
  • Gradual volume fade-out before stopping
  • Alarm clock integration
  • More natural and ambient sound options
  • Playlist or sequence of sounds
  • Ability to save custom sound mixes

ZenActivity

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sleep Bug Pro

No in-app purchases

None

ZenActivity

No in-app purchases

Questions

Is Sleep Bug Pro free?
Sleep Bug Pro costs $1.99, with no in-app purchases.
Is ZenActivity free?
ZenActivity costs $3.99, with no in-app purchases.
Which has better reviews, Sleep Bug Pro or ZenActivity?
Sleep Bug Pro is rated higher. Sleep Bug Pro averages 4.9 out of 5 from 132 ratings, while ZenActivity averages 4.5 from 58 ratings.
Do Sleep Bug Pro or ZenActivity have ads?
Neither Sleep Bug Pro nor ZenActivity shows ads.
Which is updated more often, Sleep Bug Pro or ZenActivity?
Sleep Bug Pro ships an update monthly, and ZenActivity every 13 months. Most recently, Sleep Bug Pro was updated on October 24, 2026 and ZenActivity on October 23, 2026.

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