# Stillness Watch vs HRM Battery

The clearest difference is update cadence: HRM Battery at every 10 days against Stillness Watch's every 6 months. Stillness Watch's advantage is price ($0.99 vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Stillness Watch costs $0.99 and HRM Battery $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stillness Watch ships an update every 6 months, HRM Battery every 10 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Stillness Watch | HRM Battery |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 10 days** |
| Size | 4 MB | 3 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tocapp Games S.L.](https://appshunter.io/developer/1382683382) | [DAN URBANEK](https://appshunter.io/developer/1875347262) |

## What reviewers say

### Stillness Watch

[App page](https://appshunter.io/ios/app/stillness-watch-focus-timer/id6670392801)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### HRM Battery

[App page](https://appshunter.io/ios/app/hrm-battery/id6758920011)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Stillness Watch free?

Stillness Watch costs $0.99, with no in-app purchases.

### Is HRM Battery free?

HRM Battery costs $1.99, with no in-app purchases.

### Do Stillness Watch or HRM Battery have ads?

Neither Stillness Watch nor HRM Battery shows ads.

### Which is updated more often, Stillness Watch or HRM Battery?

Stillness Watch ships an update every 6 months, and HRM Battery every 10 days. Most recently, Stillness Watch was updated on October 25, 2026 and HRM Battery on October 25, 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.*