# ODC Tutor vs Rapid Log

The clearest difference is price: ODC Tutor at Free against Rapid Log's $6.99. ODC Tutor also leads on iOS requirement (13.0 vs 26.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

ODC Tutor is free to download; Rapid Log costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ODC Tutor ships an update every 2 months, Rapid Log every 5 weeks. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ODC Tutor | Rapid Log |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rapid-log-cct-edition/id6758737374/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 4 MB |
| Requires iOS | **13.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Satish Deopujari](https://appshunter.io/developer/1180072702) | [Nicholas Keene](https://appshunter.io/developer/1874700362) |

## What reviewers say

### ODC Tutor

[App page](https://appshunter.io/ios/app/odc-tutor/id993661003)

Visualize and understand the oxygen-hemoglobin dissociation curve. This medical tool shows the relationship between oxygen partial pressure and hemoglobin saturation, highlighting factors that shift the curve and critical care points.

**Highlights:** Visualize oxygen-hemoglobin dissociation curve, Shift curve right/left to show affinity changes, Display causes for curve shifts, Show arterial and venous saturation, Indicate P50 value, Highlight ICU point for critical care monitoring

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

**In-app purchases:** none


### Rapid Log

[App page](https://appshunter.io/ios/app/rapid-log-cct-edition/id6758737374)

This app helps critical care transport teams and emergency department providers quickly log medications, interventions, and timeline events in real-time. It offers one-tap logging, CPR timers, and medication tracking to support patient care without distraction. Designed for high-acuity environments, it aids in post-call documentation accuracy.

**Highlights:** One-tap event logging, CPR timer and workflow support, Fast medication tracking, Apple Watch integration, Customizable workflow, Call history and timeline review

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ODC Tutor free?

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

### Is Rapid Log free?

Rapid Log costs $6.99, with no in-app purchases.

### Do ODC Tutor or Rapid Log have ads?

Neither ODC Tutor nor Rapid Log shows ads.

### Which is updated more often, ODC Tutor or Rapid Log?

ODC Tutor ships an update every 2 months, and Rapid Log every 5 weeks. Most recently, ODC Tutor was updated on October 21, 2026 and Rapid Log on October 9, 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.*