Comparison

Interval Timer vs Sleep Noise Machine

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

Head to head
About

Interval Timer

This advanced interval timer supports HIIT, Tabata, and circuit training with customizable work, rest, and cooldown periods. Stay focused with voice alerts, background operation, and music integration for any fitness routine.

Highlights
  • Customizable workouts
  • Pre-set & custom intervals
  • Voice & sound alerts
  • Music integration
  • Background operation
  • Dark & light mode
Features
Read full description

Take your HIIT, Tabata, and circuit training to the next level with this advanced interval timer—your ideal companion for structured, high-intensity workouts. Whether you're an athlete, fitness enthusiast, or just getting started, this app helps you stay focused and push your limits. Key Features: Customizable Workouts – Set your work, rest, and cooldown times to suit any routine Pre-Set & Custom Intervals – Use built-in templates or create your own Voice & Sound Alerts – Stay on track without looking at your screen Music Integration – Keep your energy high with background music Dark & Light Mode – Choose the look that works best for you Background Operation – Timer continues even when using other apps Great For: HIIT and Tabata sessions Sprint and running drills Strength and circuit training Martial arts, boxing, and MMA Yoga, stretching, and meditation Includes optional paid subscriptions, which can be canceled at any time. Download now and stay in control of your training—wherever you are. Privacy Policy: https://doc-hosting.flycricket.io/interval-timer-hiit-privacy-policy/e8e356e5-c8bf-44a0-af21-1ced9ed45894/privacy Terms of Use: https://doc-hosting.flycricket.io/interval-timer-hiit-terms-of-use/02c4d0ca-29f9-47f1-a4d5-36c2b4ec4688/terms

About

Sleep Noise Machine

Generate high-quality white, pink, brown, and black noise with advanced audio customization. Create the ideal sound environment for sleep, focus, or masking distractions with real-time adjustments and a user-friendly interface.

Highlights
  • High-quality white, pink, brown, black noise
  • 10-band graphic equalizer
  • Adjustable high-pass and low-pass filters
  • Real-time audio spectrum visualization
  • Timer with auto-stop and fade out
  • Ear fatigue reduction methods
  • Customizable user presets
Features
Read full description

A sophisticated white, pink, brown, and black noise generator with advanced audio customisation features. This app helps create the perfect sound environment for deep sleep, concentration, relaxation, or simply masking unwanted background noise. Now features green noise using black noise sound source and the new green noise EQ preset. Features: - Four high-quality noise types: White, Pink, Brown, and Black noise generated using advanced DSP algorithms for the higest quality - Professional-grade 10-band equaliser with customisable frequency adjustments - High-fidelity audio processing with oversampling technology and multiple biquads for superior sound quality - Black noise with a custom preset will give you the deepest sleep ever - Adjustable high-pass and low-pass filters with multiple slopes - Real-time audio spectrum visualisation with line and bar graph modes - Timer function with auto-stop capability and slow fade out - Sound changes and updates in real time as you move EQ and filter faders! - utilises advanced ear fatigue reduction methods such as gentle filter modulation, stereo processing and micro changes in dynamics making long hours of listening pleasant - Smooth crossfading between different noise types when switching for a peaceful transition - Airplay mode support - Bluetooth output support - Airpods output support - 25+ built-in audio presets for various environments and use cases - Very efficient engine enables the highest quality sounds and effects while saving on battery use - Custom user presets that can be saved and recalled - Sleek, intuitive interface with professional controls - Background audio playback support Studies show that noise can be used to help ADHD sufferers by providing consistent, non-distracting background sound. For tinnitus sufferers, the customisable frequency controls allow precise masking of troublesome frequencies, potentially providing relief from persistent ringing. The app is fully functional without subscription and you are welcome to use it as much as you like. However, if you want to enjoy the app with an unlimited timer then you can purchase a premium subscription. If you purchase a monthly or yearly subscription, payment will be charged to your iTunes account. Your account will automatically be charged for renewal within 24-hours prior to the end of the current subscription unless you disable auto-renew. You can manage your subscriptions and turn off auto-renewal by going to your account settings on the App Store after purchase. When canceling a subscription, your subscription will stay active until the end of the current period. Auto-renewal will be disabled, but the current subscription will not be refunded. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer4 screens
Sleep Noise Machine4 screens

Verdict

The call

The clearest difference is review sentiment: Sleep Noise Machine at 33% against Interval Timer's 0%. Sleep Noise Machine also leads on update cadence (every 4 days vs monthly) and rating (4.6 vs 4.2). On price, ads, in-app purchases and monetization model 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. Interval Timer sells 3 in-app purchases, starting at $4.99 per 7 days and Sleep Noise Machine sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sleep Noise Machine holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Sleep Noise Machine has 140 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 0% of Interval Timer's written reviews are positive against 33% of Sleep Noise Machine's.

UpkeepUpdate frequency

Interval Timer ships an update monthly, Sleep Noise Machine every 4 days. The most recent releases landed on September 10, 2026 and August 5, 2026 respectively.

Scorecard6 real differences · 4 level
Interval Timer versus Sleep Noise Machine: the parameters behind the verdict, then further details
ParameterInterval TimerSleep Noise Machine
PriceFreeFree
Rating4.2 (10 ratings)4.6 (140 ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings10140 — better
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size31 MB41 MB
Age rating4+4+
DeveloperLori NguyenSimon Burgess

Customer experience

Interval Timer

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Sleep Noise Machine

All ratings139 ratings
Positive89.9%
Neutral2.9%
Negative7.2%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

3 purchases

Interval Timer

Subscriptions3
  • Premium Timer (weekly)3 Days trial$4.997 Days
  • Premium Timer (monthly)3 Days trial$12.991 Month
  • Premium Timer (yearly)$39.991 Year
4 purchases

Sleep Noise Machine

Subscriptions3
  • Premium Monthly$2.991 Month
  • Premium Weekly With Trial3 Days trial$3.997 Days
  • Premium Annual$19.991 Year
One-time1
  • Premium Lifetime$19.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Sleep Noise Machine free?
Sleep Noise Machine is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or Sleep Noise Machine?
Sleep Noise Machine is rated higher. Interval Timer averages 4.2 out of 5 from 10 ratings, while Sleep Noise Machine averages 4.6 from 140 ratings.
Do Interval Timer or Sleep Noise Machine have ads?
Neither Interval Timer nor Sleep Noise Machine shows ads.
Which is updated more often, Interval Timer or Sleep Noise Machine?
Interval Timer ships an update monthly, and Sleep Noise Machine every 4 days. Most recently, Interval Timer was updated on September 10, 2026 and Sleep Noise Machine on August 5, 2026.

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