# PerioCalc vs StudentRDH Canada

The clearest difference is in-app purchases: PerioCalc at none against StudentRDH Canada's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StudentRDH Canada sells 2 one-off in-app purchases. PerioCalc asks for nothing beyond the download.

PerioCalc ships an update every 3 months, StudentRDH Canada every 6 weeks. The most recent releases landed on June 7, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | PerioCalc | StudentRDH Canada |
| --- | --- | --- |
| Price | Free | 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** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 104 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Rutgers, The State University of New Jersey](https://appshunter.io/developer/458425733) | [StudentRDH Learning Inc.](https://appshunter.io/developer/1701941014) |

## What reviewers say

### 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


### StudentRDH Canada

[App page](https://appshunter.io/ios/app/studentrdh-canada/id6473174123)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pre-Assessment | Free | one-time |
| Trial | Free | one-time |


## Frequently asked questions

### Is PerioCalc free?

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

### Is StudentRDH Canada free?

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

### Do PerioCalc or StudentRDH Canada have ads?

Neither PerioCalc nor StudentRDH Canada shows ads.

### Which is updated more often, PerioCalc or StudentRDH Canada?

PerioCalc ships an update every 3 months, and StudentRDH Canada every 6 weeks. Most recently, PerioCalc was updated on June 7, 2026 and StudentRDH Canada on June 1, 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.*