# Addy Fit vs RHRSpark

The clearest difference is in-app purchases: Addy Fit at none against RHRSpark's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RHRSpark sells 2 one-off in-app purchases. Addy Fit asks for nothing beyond the download.

## The numbers

| Metric | Addy Fit | RHRSpark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rhrspark/id6762872980/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 6 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Prozorovskyi](https://appshunter.io/developer/1879829280) | [Joel Farthing](https://appshunter.io/developer/1879704683) |

## What reviewers say

### Addy Fit

[App page](https://appshunter.io/ios/app/addy-fit/id6759616007)

**Features:** Apple Watch app

**In-app purchases:** none


### RHRSpark

[App page](https://appshunter.io/ios/app/rhrspark/id6762872980)

Visualize your resting heart rate directly on your Apple Watch face with customizable complications. Choose from various styles and time windows to see your heart rate trends at a glance. Understand how your data is calculated with full transparency.

**Highlights:** Resting heart rate on watch face, Sparkline, gauge, or corner complications, 10 watch face complications, 4 time window options (8H, 24H, 7D, 30D), Two distinct data sources, Full calculation transparency

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RHRSpark Pro | $0.99 | one-time |
| Tip Jar | $2.99 | one-time |


## Frequently asked questions

### Is Addy Fit free?

Addy Fit is free to download, with no in-app purchases.

### Is RHRSpark free?

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

### Do Addy Fit or RHRSpark have ads?

Neither Addy Fit nor RHRSpark shows ads.

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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.*