Safe Vent vs On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Safe Vent
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Safe Vent performs calculations and provides recommendations designed to guide and complement healthcare team decisions in anesthesia/operating rooms, emergencies, and intensive care units. Oxygenation formulas, ventilation, mechanical power, driving pressure, and optimal PEEP predicted by Artificial Intelligence are some of its interesting features. This application does not replace individualized medical judgment for each patient and specific situation. Privacy policy: https://docs.google.com/document/d/1ESNGzHMyY034zsNM9J1f7BLyS47zP1PTvdaTCp1sdfg/edit?pli=1#heading=h.2gfsp4psfhxd Terms and Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
On
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The all new on Call Calendar! - Track your on-calls during the period you specify. - Add other coworkers to track which days they are on-call. - View your progress and achievements as you go. - Multiple themes to match your iPhone color with light and dark modes. Coming soon: notifications, calendar widget, themes! - Uses: Medical residents, Job Personal journal
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Safe Vent | On |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 58 MB | 14 MB |
| Age rating | 17+ | 4+ |
| Developer | SYNAPS AI SAS | Cesar Mejia Valero |
In-app purchases
Safe Vent
- Safe Vent Full Access3 Days trial$2.991 Month
- Safe Vent Full Access3 Days trial$29.991 Year
On
No in-app purchases
