# Hypnago vs Theta Sync

The clearest difference is in-app purchases: Hypnago at none against Theta Sync's 2. Hypnago also leads on update cadence (every 5 days vs every 2 weeks). Theta Sync's advantage is iOS requirement (15.1 vs 17.4). On price, ads and device support there is nothing between them.

Both are free to download. Theta Sync sells 2 in-app purchases, starting at $14.99 per month. Hypnago asks for nothing beyond the download.

Hypnago ships an update every 5 days, Theta Sync every 2 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Hypnago | Theta Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 1 MB | 53 MB |
| Requires iOS | 17.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Nathan Chuluda](https://appshunter.io/developer/1728866556) | [Abel Altaye](https://appshunter.io/developer/1873575365) |

## What reviewers say

### Hypnago

[App page](https://appshunter.io/ios/app/hypnago/id6502776172)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Hypnago free?

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

### Is Theta Sync free?

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

### Do Hypnago or Theta Sync have ads?

Neither Hypnago nor Theta Sync shows ads.

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

Hypnago ships an update every 5 days, and Theta Sync every 2 weeks. Most recently, Hypnago was updated on October 9, 2026 and Theta Sync on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*