# FitGrid vs HRM Battery

The clearest difference is price: FitGrid at Free against HRM Battery's $1.99. HRM Battery's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On update cadence and ads there is nothing between them.

FitGrid is free to download; HRM Battery costs $1.99 up front. FitGrid sells 3 in-app purchases, starting at $2.99 per 7 days. HRM Battery asks for nothing beyond the download.

FitGrid ships an update every 2 weeks, HRM Battery every 10 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FitGrid | HRM Battery |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 30 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [VICTORIA PETROVA PETROVA](https://appshunter.io/developer/1825340207) | [DAN URBANEK](https://appshunter.io/developer/1875347262) |

## What reviewers say

### FitGrid

[App page](https://appshunter.io/ios/app/fitgrid-activity-tracker/id6748345644)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Annual Subscription | $39.99 | per year |


### HRM Battery

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

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is FitGrid free?

FitGrid is free to download, with in-app purchases available.

### Is HRM Battery free?

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

### Do FitGrid or HRM Battery have ads?

Neither FitGrid nor HRM Battery shows ads.

### Which is updated more often, FitGrid or HRM Battery?

FitGrid ships an update every 2 weeks, and HRM Battery every 10 days. Most recently, FitGrid was updated on October 26, 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.*