Comparison

IntervalTimer(x) vs White Noise & Sound Machine

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

Head to head
About

IntervalTimer(x)

This app provides a customizable interval timer for workouts, focus sessions, and breaks. It offers audio cues, visual progress, and tracks workout history locally. Optional body metrics can be entered for calorie estimates, all stored securely on your device.

Highlights
  • Customizable work/rest/sets intervals
  • Audio cues for transitions
  • Workout history log
  • Local calorie estimates
  • Offline functionality
  • Siri Shortcuts integration
Features
Read full description

IntervalTimer - Train On Your Terms IntervalTimer is a clean, customizable interval timer built for workouts, focus sessions, and recovery breaks. Set your work duration, rest duration, and number of sets , then let the app keep you on pace with audio cues and a visual progress indicator. Your data stays on your device. IntervalTimer collects no personal data and has no account system. Everything - your workout history, body metrics, timer configurations, and intentions - is stored locally using Apple's SwiftData framework. Nothing leaves your phone. There are no servers, no cloud sync, no analytics pipelines, and no third-party SDKs tracking your behavior. The optional body metrics (weight, height, sex) you enter for calorie estimates are saved only in your device's local storage via UserDefaults. They are never transmitted, never shared, and never used for any purpose beyond the in-app calorie calculation you see on screen. Features: - Fully customizable work/rest/sets intervals - Audio cues for transitions and completion - Workout history log with session details - Calorie estimates based on your local profile - Intentions tracking to reflect on your mindset - Pre-configured templates to get started fast - Siri Shortcuts and Spotlight integration - Works entirely offline - always Disclaimer: Calorie estimates are educational only and not a substitute for medical advice.Consult a healthcare provider before making health decisions.

About

White Noise & Sound Machine

Drift into deep sleep with a variety of calming soundscapes and intelligent audio mixing. Block distractions, reduce stress, and wake up refreshed. Create custom sound environments and use the smart timer for a seamless sleep experience.

Highlights
  • Calming soundscapes
  • Custom sound mixing
  • Intelligent audio mixing
  • Smart sleep timer
  • Noise blocking
  • Ad-free experience (premium)
Features
Read full description

Fall asleep faster. Stay asleep all night. Wake up refreshed. This is not just a sleep sounds app. It’s your nightly reset. Sleep Sound helps you relax your mind, reduce stress, and drift into deep, uninterrupted sleep using carefully designed soundscapes and intelligent audio mixing. No accounts. No distractions. Just sleep. --- WHY PEOPLE LOVE IT • Fall asleep in minutes with calming sounds • Block noise and distractions instantly • Stay asleep longer without interruptions • Wake up feeling clear and energized Trusted by thousands of sleepers looking for real results. --- IMMERSIVE SOUND EXPERIENCE Choose from high quality, looped soundscapes designed for deep relaxation: • Rain and soft storms • Ocean waves and deep water ambience • Forest and night nature sounds • White noise and brown noise • Fireplace and cozy environments Every sound is crafted to play seamlessly without breaks, so you never feel the loop. --- CREATE YOUR PERFECT MIX Build your own custom environment: • Mix multiple sounds together • Adjust volume for each sound • Save your favorite combinations • Create the perfect atmosphere for your sleep Your sleep, your control. --- SMART SLEEP TIMER • Set how long sounds should play • Automatic fade-out for natural sleep • No sudden stops or interruptions You fall asleep — the app handles the rest. --- FOCUSED. SIMPLE. POWERFUL. No complicated features. No clutter. Just press play and sleep. --- PREMIUM FEATURES Unlock the full experience: • Unlimited sound library • Advanced sound mixing • Extended timer options • Exclusive premium soundscapes • Ad-free experience --- Start sleeping better tonight. Download now and experience the difference. --- Terms of Use: https://www.apple.com/legal/itunes/appstore/dev/stdeula/ Privacy Policy: https://www.zenbyte.app/sleepsounds/privacy.html

Screenshots

IntervalTimer(x)4 screens
White Noise & Sound Machine4 screens

Verdict

The call

The clearest difference is in-app purchases: IntervalTimer(x) at none against White Noise & Sound Machine's 4. IntervalTimer(x) also leads on rating (5.0 vs 4.7). White Noise & Sound Machine's advantage is ratings volume (11 vs 1) and update cadence (every 8 days vs every 3 weeks). On price, ads 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

Both are free to download. White Noise & Sound Machine sells 4 in-app purchases, starting at $2.99 per 7 days. IntervalTimer(x) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

IntervalTimer(x) holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: White Noise & Sound Machine has 11 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

IntervalTimer(x) ships an update every 3 weeks, White Noise & Sound Machine every 8 days. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
IntervalTimer(x) versus White Noise & Sound Machine: the parameters behind the verdict, then further details
ParameterIntervalTimer(x)White Noise & Sound Machine
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (11 ratings)
Positive reviews—100.0% of reviews
Number of ratings111 — better
Update frequencyEvery 3 weeksEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPod — better
Requires iOS18.115.0 — better
Further details — not scored
Size9 MB107 MB
Age rating4+4+
DeveloperShapeHaven Innovations LLCZENBYTE DIJITAL TEKNOLOJILER LIMITED SIRKETI

In-app purchases

None

IntervalTimer(x)

No in-app purchases

4 purchases

White Noise & Sound Machine

Subscriptions3
  • Premium Weekly$2.997 Days
  • Premium Monthly$5.991 Month
  • Premium Yearly$19.991 Year
One-time1
  • Premium Lifetime$39.99

Questions

Is IntervalTimer(x) free?
IntervalTimer(x) is free to download, with no in-app purchases.
Is White Noise & Sound Machine free?
White Noise & Sound Machine is free to download, with in-app purchases available.
Which has better reviews, IntervalTimer(x) or White Noise & Sound Machine?
IntervalTimer(x) is rated higher. IntervalTimer(x) averages 5.0 out of 5 from 1 ratings, while White Noise & Sound Machine averages 4.7 from 11 ratings.
Do IntervalTimer(x) or White Noise & Sound Machine have ads?
Neither IntervalTimer(x) nor White Noise & Sound Machine shows ads.
Which is updated more often, IntervalTimer(x) or White Noise & Sound Machine?
IntervalTimer(x) ships an update every 3 weeks, and White Noise & Sound Machine every 8 days. Most recently, IntervalTimer(x) was updated on October 21, 2026 and White Noise & Sound Machine on October 25, 2026.

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