# Zero Smoke vs Blou

The clearest difference is update cadence: Blou at weekly against Zero Smoke's every 6 months. Zero Smoke's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Zero Smoke sells 2 in-app purchases, starting at $3.99 per month and Blou sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Zero Smoke ships an update every 6 months, Blou weekly. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Zero Smoke | Blou |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/blou-quit-smoking-tracker/id6758997298/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | — | Subscription |
| Size | 52 MB | 14 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [MARIO PETROV USHEV](https://appshunter.io/developer/1802892824) | [Heorhi Talochka](https://appshunter.io/developer/1876232563) |

## What reviewers say

### Zero Smoke

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

**Features:** macOS Compatibility

**In-app purchases (2)**

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


### Blou

[App page](https://appshunter.io/ios/app/blou-quit-smoking-tracker/id6758997298)

This app helps you quit smoking by visually tracking your transformation and progress. It offers features like a photo timeline, lung capacity checks, and instant craving support to motivate your journey to a smoke-free life.

**Highlights:** Visual transformation photo timeline, Lung capacity checks, SOS craving support, Personalized progress insights, Milestone visualization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $14.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Zero Smoke free?

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

### Is Blou free?

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

### Do Zero Smoke or Blou have ads?

Neither Zero Smoke nor Blou shows ads.

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

Zero Smoke ships an update every 6 months, and Blou weekly. Most recently, Zero Smoke was updated on October 6, 2026 and Blou on October 19, 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.*