# HRVSpark vs Longevity Arc

The clearest difference is update cadence: Longevity Arc at every 3 days against HRVSpark's weekly. Longevity Arc also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HRVSpark sells 2 one-off in-app purchases and Longevity Arc sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

HRVSpark ships an update weekly, Longevity Arc every 3 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HRVSpark | Longevity Arc |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 6 MB | 40 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Joel Farthing](https://appshunter.io/developer/1879704683) | [Radoslaw Jozefowicz](https://appshunter.io/developer/1859278240) |

## 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 |


### Longevity Arc

[App page](https://appshunter.io/ios/app/longevity-arc/id6766045106)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Lifetime Pro | $9.99 | one-time |


## Frequently asked questions

### Is HRVSpark free?

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

### Is Longevity Arc free?

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

### Do HRVSpark or Longevity Arc have ads?

Neither HRVSpark nor Longevity Arc shows ads.

### Which is updated more often, HRVSpark or Longevity Arc?

HRVSpark ships an update weekly, and Longevity Arc every 3 days. Most recently, HRVSpark was updated on October 14, 2026 and Longevity Arc on October 7, 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.*