# JStepWatch vs SleepTank™

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.

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.

## The numbers

| Metric | JStepWatch | SleepTank™ |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 2 months** |
| Size | 1 MB | 25 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Julian Werfel](https://appshunter.io/developer/1550842863) | [Institutes for Behavior Resources, Inc.](https://appshunter.io/developer/1523726030) |

## What reviewers say

### JStepWatch

[App page](https://appshunter.io/ios/app/jstepwatch/id6463562157)

**Features:** Apple Watch app

**In-app purchases:** none


### SleepTank™

[App page](https://appshunter.io/ios/app/sleeptank/id6480587444)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JStepWatch free?

JStepWatch costs $0.99, with no in-app purchases.

### Is SleepTank™ free?

SleepTank™ is free to download, with no in-app purchases.

### Do JStepWatch or SleepTank™ have ads?

Neither JStepWatch nor SleepTank™ shows ads.

### Which is updated more often, JStepWatch or SleepTank™?

JStepWatch ships an update every 24 months, and SleepTank™ every 2 months. Most recently, JStepWatch was updated on November 7, 2026 and SleepTank™ on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*