# Shadow Yoga vs HRVSpark

The clearest difference is price: HRVSpark at Free against Shadow Yoga's $4.99. HRVSpark also leads on update cadence (weekly vs every 11 months). Shadow Yoga's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

HRVSpark is free to download; Shadow Yoga costs $4.99 up front. HRVSpark sells 2 one-off in-app purchases. Shadow Yoga asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Shadow Yoga against 5.0 for HRVSpark. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Shadow Yoga ships an update every 11 months, HRVSpark weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Shadow Yoga | HRVSpark |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/shadow-yoga/id930683452/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/hrvspark/id6759590346/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | Paid | **Freemium** |
| Size | 21 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shadow Yoga](https://appshunter.io/developer/1066404841) | [Joel Farthing](https://appshunter.io/developer/1879704683) |

## What reviewers say

### Shadow Yoga

[App page](https://appshunter.io/ios/app/shadow-yoga/id930683452)

Learn the Shadow Yoga Preludes with animated demonstrations of Caranas and all three sequences. This app provides instructions to deepen your understanding of the practice, complementing in-person guidance from certified teachers.

**Highlights:** Animated Caranas, All three Preludes demonstrated, Instructional support, Complements teacher instruction, Supports understanding of practice

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Shadow Yoga free?

Shadow Yoga costs $4.99, with no in-app purchases.

### Is HRVSpark free?

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

### Which has better reviews, Shadow Yoga or HRVSpark?

Shadow Yoga and HRVSpark are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Shadow Yoga or HRVSpark have ads?

Neither Shadow Yoga nor HRVSpark shows ads.

### Which is updated more often, Shadow Yoga or HRVSpark?

Shadow Yoga ships an update every 11 months, and HRVSpark weekly. Most recently, Shadow Yoga was updated on November 1, 2026 and HRVSpark on October 31, 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.*