# Quit Smoking Marathon vs D

The clearest difference is in-app purchases: D at none against Quit Smoking Marathon's 4. D also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Quit Smoking Marathon sells 4 in-app purchases, starting at $4.49 per month. D asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Quit Smoking Marathon | D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Size | 37 MB | 70 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Is](https://appshunter.io/developer/500993585) | [株式会社リンケージ](https://appshunter.io/developer/1210269931) |

## What reviewers say

### Quit Smoking Marathon

[App page](https://appshunter.io/ios/app/quit-smoking-marathon/id879906153)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan(Monthly amount) | $4.49 | per month |
| Premium Plan(Yearly amount) | $42.99 | per year |
| Keep points | $0.99 | one-time |
| Hide ad | $3.99 | one-time |


### D

[App page](https://appshunter.io/ios/app/d-cubenew/id1384359246)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quit Smoking Marathon free?

Quit Smoking Marathon is free to download, with in-app purchases available.

### Is D free?

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

### Do Quit Smoking Marathon or D have ads?

Quit Smoking Marathon shows ads; D does not.

### Which is updated more often, Quit Smoking Marathon or D?

Quit Smoking Marathon ships an update every 3 months, and D every 3 months. Most recently, Quit Smoking Marathon was updated on October 13, 2026 and D on October 25, 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.*