# Safe Vent vs On

The clearest difference is in-app purchases: On at none against Safe Vent's 2. On also leads on update cadence (every 6 days vs every 3 months). Safe Vent's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Safe Vent sells 2 in-app purchases, starting at $2.99 per month. On asks for nothing beyond the download.

Safe Vent ships an update every 3 months, On every 6 days. The most recent releases landed on September 11, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Safe Vent | On |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Size | 58 MB | 14 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [SYNAPS AI SAS](https://appshunter.io/developer/1710831235) | [Cesar Mejia Valero](https://appshunter.io/developer/1506871861) |

## What reviewers say

### 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 |


### On

[App page](https://appshunter.io/ios/app/on-call-schedule-lite/id6468896281)

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

**In-app purchases:** none


## Frequently asked questions

### Is Safe Vent free?

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

### Is On free?

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

### Do Safe Vent or On have ads?

Neither Safe Vent nor On shows ads.

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

Safe Vent ships an update every 3 months, and On every 6 days. Most recently, Safe Vent was updated on September 11, 2026 and On on September 28, 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.*