# Somnus vs Heparin Heuristics Lite

The clearest difference is price: Somnus at Free against Heparin Heuristics Lite's $4.99. Somnus also leads on update cadence (every 5 days vs every 4 months) and device support (5 vs 3). Heparin Heuristics Lite's advantage is in-app purchases (none vs 3) and iOS requirement (15.0 vs 18.6). On ads there is nothing between them.

Somnus is free to download; Heparin Heuristics Lite costs $4.99 up front. Somnus sells 3 in-app purchases, starting at $19.99 per year. Heparin Heuristics Lite asks for nothing beyond the download.

Somnus ships an update every 5 days, Heparin Heuristics Lite every 4 months. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Somnus | Heparin Heuristics Lite |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.5 (28 ratings)](https://appshunter.io/ios/app/somnus/id1360604259/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 11 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Somnus Health Pty Ltd](https://appshunter.io/developer/1104893009) | [Philip Cumpston](https://appshunter.io/developer/1170883918) |

## What reviewers say

### Somnus

[App page](https://appshunter.io/ios/app/somnus/id1360604259)

Log anesthesia, surgical, and critical care cases and procedures efficiently. Securely sync data with iCloud, encrypt it locally, and utilize powerful search and export features. Customize entries, add notes, and scan patient IDs for streamlined record-keeping.

**Highlights:** Case and procedure logging, Secure iCloud syncing, Local data encryption, Customizable categories and items, Patient ID scanning, Clinical photo integration, Data export (PDF, CSV)

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $19.99 | per year |
| Yearly Subscription PRO | $99.99 | per year |
| Shout Paul A Coffee? | $3.99 | one-time |


### Heparin Heuristics Lite

[App page](https://appshunter.io/ios/app/heparin-heuristics-lite/id1499772855)

**In-app purchases:** none


## Frequently asked questions

### Is Somnus free?

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

### Is Heparin Heuristics Lite free?

Heparin Heuristics Lite costs $4.99, with no in-app purchases.

### Do Somnus or Heparin Heuristics Lite have ads?

Neither Somnus nor Heparin Heuristics Lite shows ads.

### Which is updated more often, Somnus or Heparin Heuristics Lite?

Somnus ships an update every 5 days, and Heparin Heuristics Lite every 4 months. Most recently, Somnus was updated on November 12, 2026 and Heparin Heuristics Lite on November 3, 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.*