# Theta Sync vs Invokk

Theta Sync and Invokk are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Theta Sync sells 2 in-app purchases, starting at $14.99 per month and Invokk sells 2 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

Theta Sync ships an update every 2 weeks, Invokk monthly. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Theta Sync | Invokk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/invokk/id6760530578/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 53 MB | 75 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Abel Altaye](https://appshunter.io/developer/1873575365) | [Invokk LLC](https://appshunter.io/developer/1884825656) |

## What reviewers say

### Theta Sync

[App page](https://appshunter.io/ios/app/theta-sync/id6758551209)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $14.99 | per month |
| ThetaSync Yearly Premium | $99.99 | per year |


### Invokk

[App page](https://appshunter.io/ios/app/invokk/id6760530578)

Immerse yourself in audio experiences designed for personal growth, focus, and well-being. Explore guided sessions, multi-day journeys, and instrumental soundscapes to enhance sleep, calm your mind, and boost productivity.

**Highlights:** Guided audio sessions, Multi-day journeys, Resume listening, Listening queue, Offline downloads, Instrumental soundscapes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Everyday Optimization | $29.99 | per month |
| Advanced Optimization | $39.99 | per month |


## Frequently asked questions

### Is Theta Sync free?

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

### Is Invokk free?

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

### Do Theta Sync or Invokk have ads?

Neither Theta Sync nor Invokk shows ads.

### Which is updated more often, Theta Sync or Invokk?

Theta Sync ships an update every 2 weeks, and Invokk monthly. Most recently, Theta Sync was updated on October 1, 2026 and Invokk on September 30, 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.*