# HRVSpark vs ParamWatch

The clearest difference is in-app purchases: ParamWatch at none against HRVSpark's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HRVSpark sells 2 one-off in-app purchases. ParamWatch asks for nothing beyond the download.

HRVSpark ships an update weekly, ParamWatch every 11 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | HRVSpark | ParamWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hrvspark/id6759590346/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 days |
| Monetization | Freemium | — |
| Size | 6 MB | 1 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Joel Farthing](https://appshunter.io/developer/1879704683) | [Luca Ceci](https://appshunter.io/developer/923764949) |

## What reviewers say

### HRVSpark

[App page](https://appshunter.io/ios/app/hrvspark/id6759590346)

Visualize your raw heart rate variability data directly on your Apple Watch face with a dynamic sparkline complication. Get immediate insights into your body's trends without opaque scores or labels. A companion iPhone app provides detailed views and guidance.

**Highlights:** Raw HRV sparkline complication, 8-hour free complication, 24/7, 7-day, 30-day Pro views, Circular gauge and corner complications, iPhone companion app, No interpretation layer, Complication-first design

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HRVSpark Pro | $0.99 | one-time |
| HRVSpark Tip Jar | $4.99 | one-time |


### ParamWatch

[App page](https://appshunter.io/ios/app/paramwatch/id6804263437)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is HRVSpark free?

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

### Is ParamWatch free?

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

### Do HRVSpark or ParamWatch have ads?

Neither HRVSpark nor ParamWatch shows ads.

### Which is updated more often, HRVSpark or ParamWatch?

HRVSpark ships an update weekly, and ParamWatch every 11 days. Most recently, HRVSpark was updated on October 31, 2026 and ParamWatch on November 10, 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.*