# cie9 vs Safe Vent

The clearest difference is price: Safe Vent at Free against cie9's $1.99. Safe Vent also leads on update cadence (every 3 months vs every 24 months) and iOS requirement (13.0 vs 15.5). cie9's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Safe Vent is free to download; cie9 costs $1.99 up front. Safe Vent sells 2 in-app purchases, starting at $2.99 per month. cie9 asks for nothing beyond the download.

cie9 ships an update every 24 months, Safe Vent every 3 months. The most recent releases landed on October 1, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | cie9 | Safe Vent |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 3 months** |
| Size | 6 MB | 58 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LUIS MOSQUERA A.](https://appshunter.io/developer/541448831) | [SYNAPS AI SAS](https://appshunter.io/developer/1710831235) |

## What reviewers say

### cie9

[App page](https://appshunter.io/ios/app/cie9-mc/id564860482)

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

**In-app purchases:** none


### Safe Vent

[App page](https://appshunter.io/ios/app/safe-vent/id6468893543)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Safe Vent Full Access | $2.99 | per month |
| Safe Vent Full Access | $29.99 | per year |


## Frequently asked questions

### Is cie9 free?

cie9 costs $1.99, with no in-app purchases.

### Is Safe Vent free?

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

### Do cie9 or Safe Vent have ads?

Neither cie9 nor Safe Vent shows ads.

### Which is updated more often, cie9 or Safe Vent?

cie9 ships an update every 24 months, and Safe Vent every 3 months. Most recently, cie9 was updated on October 1, 2026 and Safe Vent on September 11, 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.*