Comparison

Sleep Time+ Cycle Alarm Clock vs NapBot

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

Head to head
About

Sleep Time+ Cycle Alarm Clock

Understand your sleep patterns and wake up feeling refreshed. This app tracks sleep cycles, offers soothing soundscapes for falling asleep, and measures resting heart rate without wearables. It provides detailed analysis and customizable alarms to optimize your sleep and wake-up experience.

Highlights
  • Sleep cycle analysis
  • Soothing soundscapes
  • Resting heart rate measurement
  • Smart alarm clock
  • Detailed sleep graphs
  • Apple Health integration
Features
Read full description

Fall asleep, stay asleep, and wake up refreshed! Sleep Time is a complete sleep tracker and smart alarm clock. Place your phone on the bed and Sleep Time analyzes your sleep cycles through the night, then wakes you during your lightest sleep within your chosen window — so you start the day rested instead of groggy. Trusted by over 35 million users, Sleep Time is an award-winning sleep app. ------------------ 5/5 “I finally understand why I wake up tired some mornings. Sleep Time showed me my sleep cycles, and the smart alarm has made my mornings so much easier — I haven’t hit snooze in weeks.” 5/5 “I’ve tried several apps that log sleep duration and stages, and the interface of Sleep Time is the best by far. It’s easy to understand and simple to use.” 5/5 “Fascinating results. It works remarkably well providing helpful information.” Featured on: TechCrunch, Mashable, Lifehacker, 148apps, eHealth, and many others. ----------------- MAIN FEATURES √ Set the alarm clock with a single gesture √ Fall asleep to soothing soundscapes and white noise √ Alarm rings even in silent mode √ Choose from 20 built-in alarm sounds √ Wake up to your favorite song from your music library √ Sleep Lab™ with light, deep, and REM sleep analysis √ Detailed daily, weekly, and monthly graphs √ Smart wake-up window for a gentler start to the day √ Full history makes night-to-night comparison easy √ Cloud backup and restore for your sleep data √ Clear, easy-to-read interface √ Apple Health integration We build Sleep Time for our users and would love your feedback. Tell us what you think so we can keep improving the app. Upgrade to Premium for unlimited soundscapes, advanced sleep insights, priority support, and an ad-free experience with an auto-renewable subscription. We offer auto-renewable subscriptions with the following terms: - Payment will be charged to your iTunes account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication - Our privacy policy and terms of use: https://www.azumio.com/page/privacypolicy Sweet Dreams, Azumio Team

About

NapBot

Automatically track and analyze your sleep cycles using on-device machine learning. Gain insights into sleep phases, heart rate, and environmental sound exposure to understand and improve your sleep quality. Access historical data and trends with a PRO subscription.

Highlights
  • Automatic sleep tracking
  • Detailed sleep phase analysis
  • Environmental sound exposure analysis
  • Sleep heart rate summary
  • Sleep history overview
  • Sleep trend tracking
Features
Read full description

NapBot is an automatic sleep tracking and analyzing app for your iOS and watchOS devices. It uses on-device Machine Learning to detect and understand your sleep. * Sleep Tracking NapBot uses machine learning to automatically track your sleep. * Detailed Sleep Analysis NapBot presents detailed sleep phases analysis by calculating deep and light phases. * Environmental Sound Exposure NapBot analyzes your Environmental Sound Exposure to understand how it affects your sleep quality. * Sleep Heart Rate NapBot presents a sleep Heart Rate summary chart based on your HR zones. PRO Features: * Sleep History Gain insight into your full sleep history in beautifully designed overviews. * Sleep Trends Track your sleep trends to understand how new habits influence your sleep. This app requires an iPhone that has the Health App installed and Apple Watch. Heart readings are read from the Health Data Store which is populated by your Apple Watch. Subscription information Your payment will be charged to your iTunes Account as soon as you confirm your purchase. You can manage your subscriptions and turn off auto-renewal from your Account Settings after the purchase. Your subscription will renew automatically unless you turn off auto-renew at least 24 hours before the end of the current period. The cost of renewal will be charged to your account in 24 hours prior to the end of the current period. When canceling a subscription, your subscription will stay active until the end of the period. Auto-renewal will be disabled, but the current subscription will not be refunded. Any unused portion of a free trial period, if offered, will be forfeited when purchasing a subscription. Terms & Privacy Policy: https://napbot.swiftwithmajid.com/privacy

Screenshots

Sleep Time+ Cycle Alarm Clock4 screens
NapBot4 screens

Verdict

The call

The clearest difference is review sentiment: Sleep Time+ Cycle Alarm Clock at 69% against NapBot's 21%. Sleep Time+ Cycle Alarm Clock also leads on rating (4.8 vs 4.2). NapBot's advantage is monetization model (free with in-app purchases vs subscription) and ads (none vs shown). On price, ratings volume, 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

Both are free to download. Sleep Time+ Cycle Alarm Clock sells 8 in-app purchases, starting at $4.99 per month and NapBot sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sleep Time+ Cycle Alarm Clock holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 2.5K and 6.3K respectively. Written reviews point the same way: 69% of Sleep Time+ Cycle Alarm Clock's written reviews are positive against 21% of NapBot's.

UpkeepUpdate frequency

Sleep Time+ Cycle Alarm Clock ships an update monthly, NapBot every 11 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Sleep Time+ Cycle Alarm Clock versus NapBot: the parameters behind the verdict, then further details
ParameterSleep Time+ Cycle Alarm ClockNapBot
PriceFreeFree
Rating4.8 (2.5K ratings) — better4.2 (6.3K ratings)
Positive reviews68.8% of reviews — better20.9% of reviews
Number of ratings2.5K6.3K — better
Update frequencyMonthlyEvery 11 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.016.0
Further details — not scored
Size185 MB16 MB
Age rating4+4+
DeveloperAzumio Inc.Majid Jabrayilov

Customer experience

Sleep Time+ Cycle Alarm Clock

All ratings2,482 ratings
Positive95.3%
Neutral1.0%
Negative3.7%
Written reviews459 reviews
Positive68.8%
Neutral7.0%
Negative24.2%

NapBot

All ratings6,334 ratings
Positive77.6%
Neutral7.4%
Negative15.0%
Written reviews382 reviews
Positive20.9%
Neutral16.0%
Negative63.1%

User reviews

Sleep Time+ Cycle Alarm Clock

From 2.5K App Store ratings

What we love

  • 🚀 Helps track sleep patterns
  • 👍 Gentle alarm wakes you up
  • 🌊 Soundscapes help fall asleep
  • 💤 Provides sleep quality insights

Room to improve

  • 🐛 Alarm issues (fails to go off, resets unexpectedly)
  • 🔋 Battery drain
  • 💰 Paywall for core features
  • 🤖 Inaccurate sleep tracking

NapBot

From 6.3K App Store ratings

What we love

  • 🚀 Accurate sleep tracking
  • 👍 Simple and easy to use
  • 🚀 Automatic tracking without needing to open the app
  • 🚀 Useful for shift workers and those with irregular sleep schedules

Room to improve

  • 💰 Expensive subscription model
  • 🐛 Inaccurate sleep data and tracking
  • 🐛 Fails to detect awakenings during the night
  • 🐛 Tracks sedentary activities as sleep
  • 🐛 Inability to edit or delete incorrect sleep data

Bugs and requests

Sleep Time+ Cycle Alarm Clock

Reported bugs

4 issues
  • Crashes on startup
  • Freezing issues
  • Inconsistent alarm behavior
  • Lost sleep data after updates

Requested features

4 requests
  • Heart rate monitoring integration
  • Sleep data export and analysis
  • Apple Watch companion app
  • More customization options

NapBot

Reported bugs

4 issues
  • App crashes after purchasing pro version
  • Sleep data not syncing or disappearing
  • Incorrect time zone and sleep duration displayed
  • Fails to track sleep at all on some nights

Requested features

4 requests
  • Add ability to manually edit or delete sleep data
  • Improve accuracy of sleep tracking
  • Provide more detailed sleep analytics and insights
  • Offer a one-time purchase option instead of subscription

In-app purchases

8 purchases

Sleep Time+ Cycle Alarm Clock

Subscriptions8
  • Premium$4.991 Month
  • Premium$8.991 Month
  • Premium$9.991 Month
Show 5 more
  • Premium7 Days trial2 variants$9.991 Month
  • Premium$19.993 Months
  • Premium$29.991 Year
  • Premium1 Month trial2 variants$29.991 Year
  • Premium$46.991 Year
2 purchases

NapBot

Subscriptions2
  • NapBot PRO Monthly$4.991 Month
  • NapBot PRO Annual7 Days trial$29.991 Year

Questions

Is Sleep Time+ Cycle Alarm Clock free?
Sleep Time+ Cycle Alarm Clock is free to download, with in-app purchases available.
Is NapBot free?
NapBot is free to download, with in-app purchases available.
Which has better reviews, Sleep Time+ Cycle Alarm Clock or NapBot?
Sleep Time+ Cycle Alarm Clock is rated higher. Sleep Time+ Cycle Alarm Clock averages 4.8 out of 5 from 2.5K ratings, while NapBot averages 4.2 from 6.3K ratings.
Do Sleep Time+ Cycle Alarm Clock or NapBot have ads?
Sleep Time+ Cycle Alarm Clock shows ads; NapBot does not.
Which is updated more often, Sleep Time+ Cycle Alarm Clock or NapBot?
Sleep Time+ Cycle Alarm Clock ships an update monthly, and NapBot every 11 days. Most recently, Sleep Time+ Cycle Alarm Clock was updated on November 1, 2026 and NapBot on November 3, 2026.

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