# iTHRVE chakra vs Opti Calm

The clearest difference is price: Opti Calm at Free against iTHRVE chakra's $4.99. Opti Calm also leads on update cadence (every 2 months vs every 10 months) and iOS requirement (9.0 vs 12.0). iTHRVE chakra's advantage is rating (3.8 vs 3.0) and ratings volume (12 vs 2). On ads, in-app purchases and device support there is nothing between them.

Opti Calm is free to download; iTHRVE chakra costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iTHRVE chakra holds the better App Store score, 3.8 against 3.0. That said, the two scores are not equally well evidenced: iTHRVE chakra has 12 ratings behind it against 2, so its average is the more settled of the two.

iTHRVE chakra ships an update every 10 months, Opti Calm every 2 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iTHRVE chakra | Opti Calm |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.8 (12 ratings)](https://appshunter.io/ios/app/ithrve-chakra/id1148975601/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/opti-calm/id1321696251/reviews) |
| Number of ratings | **12** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | **Paid** | Subscription |
| Size | 31 MB | 280 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Patrick Botte](https://appshunter.io/developer/1116818240) | [Optiherence](https://appshunter.io/developer/948846804) |

## What reviewers say

### iTHRVE chakra

[App page](https://appshunter.io/ios/app/ithrve-chakra/id1148975601)

This app visualizes heart rate data as chakra and sacred geometry graphs. It translates heartbeats per minute into musical keys and displays chakra resonance based on your heart's signature. Requires compatible heart rate sensors.

**Highlights:** Heart rate data visualization, Chakra resonance graphs, Sacred geometry displays, Real-time heart activity monitoring, Musical key signature calculation, Bluetooth sensor integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Opti Calm

[App page](https://appshunter.io/ios/app/opti-calm/id1321696251)

Train your brain to reach optimal performance patterns with this app. It uses a compatible external brain-sensing accessory to provide visual and audio feedback, guiding you to a state of calm for meditation or high-pressure activities. Improve efficiency and recall your best performance brain patterns.

**Highlights:** Brain activity sensing integration, Visual feedback (score, video, brain representation), Audio feedback (music volume), Calm brain training algorithm, Performance optimization, Meditation and sports training modes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iTHRVE chakra free?

iTHRVE chakra costs $4.99, with no in-app purchases.

### Is Opti Calm free?

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

### Which has better reviews, iTHRVE chakra or Opti Calm?

iTHRVE chakra is rated higher. iTHRVE chakra averages 3.8 out of 5 from 12 ratings, while Opti Calm averages 3.0 from 2 ratings.

### Do iTHRVE chakra or Opti Calm have ads?

Neither iTHRVE chakra nor Opti Calm shows ads.

### Which is updated more often, iTHRVE chakra or Opti Calm?

iTHRVE chakra ships an update every 10 months, and Opti Calm every 2 months. Most recently, iTHRVE chakra was updated on September 7, 2026 and Opti Calm on September 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.*