# Sinus ID vs Decision Matters

The clearest difference is price: Sinus ID at $4.99 against Decision Matters's $44.99. Sinus ID also leads on iOS requirement (11.0 vs 15.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Sinus ID costs $4.99 and Decision Matters $44.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sinus ID ships an update every 40 months, Decision Matters every 25 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Sinus ID | Decision Matters |
| --- | --- | --- |
| Price | **$4.99** | $44.99 |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/sinus-id/id704828936/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 25 months** |
| Monetization | Paid | — |
| Size | 47 MB | 121 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Blue Tree Publishing, Inc.](https://appshunter.io/developer/496143325) | [Pohl Consulting d.o.o.](https://appshunter.io/developer/1543528021) |

## What reviewers say

### Sinus ID

[App page](https://appshunter.io/ios/app/sinus-id/id704828936)

Explore detailed 3D models and animations of sinus anatomy. Identify structures, visualize fluid flow, and use the drawing tools to annotate and share your findings. Ideal for students, patients, and medical professionals.

**Highlights:** 3D sinus anatomy models, Interactive structure identification, Normal and abnormal fluid flow animations, Two-finger zoom and pan, Drawing whiteboard with text and eraser, Screenshot and share functionality

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

**In-app purchases:** none


### Decision Matters

[App page](https://appshunter.io/ios/app/decision-matters/id1543528019)

**In-app purchases:** none


## Frequently asked questions

### Is Sinus ID free?

Sinus ID costs $4.99, with no in-app purchases.

### Is Decision Matters free?

Decision Matters costs $44.99, with no in-app purchases.

### Do Sinus ID or Decision Matters have ads?

Neither Sinus ID nor Decision Matters shows ads.

### Which is updated more often, Sinus ID or Decision Matters?

Sinus ID ships an update every 40 months, and Decision Matters every 25 months. Most recently, Sinus ID was updated on September 24, 2026 and Decision Matters on September 23, 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.*