JStepWatch vs SleepTank™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JStepWatch
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Introducing JStepWatch – your ultimate solution for effortless activity tracking, right from your watch face! Say goodbye to the hassle of navigating through endless screens to find crucial health data. With JStepWatch, all the essential insights into your daily activity are available at a glance, empowering you to stay on top of your fitness goals without interruption. Track your steps, distance, flights climbed, and stand minutes with unparalleled convenience. No need to open the activity app and scroll through multiple views – everything is instantly accessible from your watch face. Want to see how today compares to your past performance? JStepWatch also provides detailed charts, letting you effortlessly track your progress over the last 7 days. Powered by HealthKit, JStepWatch seamlessly integrates with your health data, displaying real-time updates directly from your device. During the quick setup process, simply authorize access to HealthKit, and rest assured – your data stays secure. JStepWatch only reads and displays information; it never alters or shares your personal health data. Your stats are refreshed automatically, in sync with WatchOS updates, keeping your watch face updated throughout the day. Experience a smarter, more efficient way to monitor your activity with JStepWatch – fitness tracking has never been so simple and seamless!
SleepTank™
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SleepTank™ is a scientific approach to sleep trackers and sleep hygiene. The mobile App provides ongoing information about your sleep health and actionable information for better sleep decisions. SleepTank™ allows you to monitor how sleep fuels your alertness. Track your sleep over time -- not just how you slept last night—using the SleepTank™ Reflects the cumulative quantity and quality of ALL prior sleep Forecast the impact of prior sleep history on future alertness Calibrated to your individual sleep goal Proactively plan sleep to improve alertness Visualize when alertness will become seriously impaired Plan when to go to bed to restore alertness Plan the length and timing of naps Visualize how a nap will extend alertness Visualizes the SleepTank™ History to see Trends in Sleep Health Ideal app for workers planning sleep to be alert on the job, such as shift workers, airline pilots, and emergency workers. Participate in Research Studies - if you consent to participate in a research study using SleepTank™ a study manager will assign you to a specific study group; you will receive a Group Code when you create your account. Works with wearable sleep trackers that estimate Sleep Duration and Quality. SleepTank™ Provides Actionable Information on Sleep • Have I had enough sleep over the long run? • Am I rested enough for duty? • How long will it be before I am dangerously in need of sleep? • Do I need to take a nap? • How soon do I need to nap and how long does the nap need to be? SleepTank™ Provides Ongoing Sleep Health Indicators • Considers the amount & quality of prior sleep • Considers how long a person has been awake • Considers personal sleep “goal” or need • Shows current status: time left in SleepTank™ • Shows history of daily SleepTank™ status • Recommends nap length to restore sleep health
Screenshots
Verdict
The clearest difference is price: SleepTank™ at Free against JStepWatch's $0.99. SleepTank™ also leads on update cadence (every 2 months vs every 24 months) and iOS requirement (13.0 vs 17.0). On 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
SleepTank™ is free to download; JStepWatch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
JStepWatch ships an update every 24 months, SleepTank™ every 2 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | JStepWatch | SleepTank™ |
|---|---|---|
| Price | $0.99 | Free — better |
| Update frequency | Every 24 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 25 MB |
| Age rating | 4+ | 17+ |
| Developer | Julian Werfel | Institutes for Behavior Resources, Inc. |
In-app purchases
JStepWatch
No in-app purchases
SleepTank™
No in-app purchases









