# Zero Smoke vs Spiral

The clearest difference is update cadence: Spiral at fortnightly against Zero Smoke's every 7 months. Spiral also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Zero Smoke sells 2 in-app purchases, starting at $3.99 per month and Spiral sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Zero Smoke ships an update every 7 months, Spiral fortnightly. The most recent releases landed on October 23, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Zero Smoke | Spiral |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Size | 68 MB | 40 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [MARIO PETROV USHEV](https://appshunter.io/developer/1802892824) | [Emre Yavuz](https://appshunter.io/developer/1294025226) |

## What reviewers say

### Zero Smoke

[App page](https://appshunter.io/ios/app/zero-smoke/id6743452857)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Annual Plan | $34.99 | per year |


### Spiral

[App page](https://appshunter.io/ios/app/spiral-mindful-journal/id6760195091)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spiral Premium | $4.99 | per month |
| Spiral Premium | $39.99 | per year |


## Frequently asked questions

### Is Zero Smoke free?

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

### Is Spiral free?

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

### Do Zero Smoke or Spiral have ads?

Neither Zero Smoke nor Spiral shows ads.

### Which is updated more often, Zero Smoke or Spiral?

Zero Smoke ships an update every 7 months, and Spiral fortnightly. Most recently, Zero Smoke was updated on October 23, 2026 and Spiral on October 9, 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.*