Comparison

AcornSleep vs EZ HIIT Workout Interval Timer

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

Head to head
About

AcornSleep

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Welcome to AcornSleep, a custom R90 sleep cycle recording tool based on Sleep by Nick Ritterhales, a better way to improve sleep and redefine rest. 8 hours is actually the average sleep time per person per night, but it is not a generally applicable recommended sleep time. Blindly chasing 8 hours and creating a lot of pressure has a very destructive and counterproductive effect on sleep. We need different sleep hours from person to person. No supplements, new mattresses or equipment are required. All it takes is your smartphone, plus our AI-powered software to work with you to come up with customized tips and recommendations to personalize your sleep journey for better rest. 4 Reasons You'll Love Sleep Cycle. 1. Total Privacy - AutoSleep has no user analytics tracking, No third-party code, No data uploaded. 2. Abundant Customization Tips - A large number of rest suggestions customized for you based on your sleep cycle registration information, daily schedule and mobile phone usage frequency. 3. No additional equipment - Just turn on your phone every morning and record how you slept last night, the AI assistant will provide you with customized advice. 4. More Ambient Noise for Sleep - Ability to make your own personal mix of sounds so you get just the right amount of ambient noise. A good night's sleep isn't always easy to find, but it's the key to many things in your life. Stop mistreating yourself and those around you. Stop accepting the fatigue and lack of energy you've been feeling. Use AcornSleep to achieve the calm you need. Whatever you're doing right now, I want you to imagine the two of us on that island, trying to keep in sync with that biological process that's been around since the dawn of man. This is our ideal life. Every step we take—however small—to improve our sleep should bring us closer to the kind of life we’re sitting around the campfire. - Please do not rely on AcornSleep for medical advice or diagnosis. AcornSleep is not intended to replace or replace professional medical care. - If you have any medical problems, or before starting any exercise program, please consult your physician. Do not adjust your medicines yourself.

About

EZ HIIT Workout Interval Timer

This interval timer offers a clean and powerful way to manage custom workouts, from HIIT and Tabata to strength training. It provides visual and audio cues, tracks progress, and works offline for ultimate convenience. Upgrade for unlimited saved workouts and cloud sync.

Highlights
  • Customizable intervals
  • Visual and audio cues
  • Workout tracking
  • Offline functionality
  • Quick-start design
  • Multiple workout styles supported
Features
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Master your training with EZ HIIT Timer - the cleanest, most powerful interval timer and workout timer for everyone. Whether you’re a beginner starting your fitness journey or a pro athlete pushing your limits, EZ HIIT Timer is the intuitive interval training tool that adapts to your style. From Tabata timer sessions to high-intensity CrossFit rounds, get focused workout sessions built around your goals. No logins. No fluff. WHY CHOOSE EZ HIIT TIMER? • Quick-start design: From app-launch to "3-2-1 Go!" in under 10 seconds • Any Workout Style: Fully compatible with HIIT, Tabata, EMOM, AMRAP, Pyramid, and all other custom routines. • Full Customization: Total control over rounds, rest periods, warm-ups, and cool-downs. • Visual & Audio Cues: Stay in the rhythm with eyes-free cues and voice alerts. • Workout Tracking: Monitor your progress with history, streaks, and session data. • Universal Training: Beginner to expert friendly; grows with your fitness level. • Convenience: No equipment needed; body-weight workouts anywhere, anytime. • Offline Ready: Battery-friendly and works in low-signal locations (perfect for travel). WHAT’S INCLUDED? • Custom Intervals: Set your own work/rest ratios for any circuit timer. • Easy Presets: Get moving faster with quick setup options. • Recent Workouts: Quickly view and restart your latest sessions. • Progress Stats: In-depth tracking to stay motivated. • Voice & Haptic Alerts: Stay informed without looking at the screen. • Privacy First: No account or login required - just focused training. SMART DESIGN FOR TOTAL FOCUS EZ HIIT Timer is purposefully minimalist - no distractions, no clutter. Use this seconds timer for: • Fast fat-burning cardio & sprint intervals • Strength training rounds & bodyweight circuits • Breathing exercises & yoga timing • Basically anything involving an interval clock and repetition. EZ HIIT TIMER PRO (One-Time Upgrade) Want even more control over your interval training? Unlock Pro for: • Unlimited saved workouts and custom templates. • Popular Presets: Instant access to HIIT, Tabata, EMOM, AMRAP, and Pyramid. • Extensive Archive: A full workout history at your fingertips. • Premium Sound & UX: Enhanced presets and an optimized experience. OPTIONAL PRO+ SUBSCRIPTION For users who want the ultimate, seamless fitness tracker experience: • Cloud Sync & Backup: Access your workouts seamlessly across all devices. • Advanced Progress Tracking: View detailed training trends and compare sessions to monitor growth over time. Start small. Train hard. Grow with every round. Thank you for choosing EZ HIIT Timer - the simple workout clock that cheers from your pocket. Keep moving forward - you've got this! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AcornSleep4 screens
EZ HIIT Workout Interval Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: AcornSleep at none against EZ HIIT Workout Interval Timer's 4. AcornSleep also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, 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. EZ HIIT Workout Interval Timer sells 4 in-app purchases, starting at $2.99 per month. AcornSleep asks for nothing beyond the download.

UpkeepUpdate frequency

AcornSleep ships an update every 10 days, EZ HIIT Workout Interval Timer fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 7 level
AcornSleep versus EZ HIIT Workout Interval Timer: the parameters behind the verdict, then further details
ParameterAcornSleepEZ HIIT Workout Interval Timer
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 10 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.1
Further details — not scored
Size78 MB67 MB
Age rating4+4+
DeveloperCanoe LLCAlexander Mayer

In-app purchases

None

AcornSleep

No in-app purchases

4 purchases

EZ HIIT Workout Interval Timer

Subscriptions3
  • EZ HIIT Timer Pro+14 Days trial$2.991 Month
  • EZ HIIT Timer Pro+$19.991 Year
  • EZ HIIT Timer Pro+14 Days trial$19.991 Year
One-time1
  • EZ HIIT Timer Pro$3.99

Questions

Is AcornSleep free?
AcornSleep is free to download, with no in-app purchases.
Is EZ HIIT Workout Interval Timer free?
EZ HIIT Workout Interval Timer is free to download, with in-app purchases available.
Do AcornSleep or EZ HIIT Workout Interval Timer have ads?
Neither AcornSleep nor EZ HIIT Workout Interval Timer shows ads.
Which is updated more often, AcornSleep or EZ HIIT Workout Interval Timer?
AcornSleep ships an update every 10 days, and EZ HIIT Workout Interval Timer fortnightly. Most recently, AcornSleep was updated on October 6, 2026 and EZ HIIT Workout Interval Timer on October 1, 2026.

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