# Decision Matters vs PerioCalc

The clearest difference is price: PerioCalc at Free against Decision Matters's $44.99. PerioCalc also leads on update cadence (every 3 months vs every 25 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

PerioCalc is free to download; Decision Matters costs $44.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Decision Matters ships an update every 25 months, PerioCalc every 3 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Decision Matters | PerioCalc |
| --- | --- | --- |
| Price | $44.99 | **Free** |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/periocalc/id6470758932/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 121 MB | 22 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Pohl Consulting d.o.o.](https://appshunter.io/developer/1543528021) | [Rutgers, The State University of New Jersey](https://appshunter.io/developer/458425733) |

## What reviewers say

### Decision Matters

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

**In-app purchases:** none


### PerioCalc

[App page](https://appshunter.io/ios/app/periocalc/id6470758932)

This educational tool assists dental students and professionals in understanding and applying the latest periodontal classification guidelines for staging and grading periodontitis and peri-implantitis. It offers instant results for case-based learning, focusing on the 2018 Classification.

**Highlights:** Periodontal classification learning, Staging and grading of periodontitis, Peri-implantitis classification, Case-based learning tool, Instant results, Based on 2018 Classification

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decision Matters free?

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

### Is PerioCalc free?

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

### Do Decision Matters or PerioCalc have ads?

Neither Decision Matters nor PerioCalc shows ads.

### Which is updated more often, Decision Matters or PerioCalc?

Decision Matters ships an update every 25 months, and PerioCalc every 3 months. Most recently, Decision Matters was updated on October 9, 2026 and PerioCalc on October 7, 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.*