# DHS Board Review vs PerioCalc

The clearest difference is review sentiment: PerioCalc at 100% against DHS Board Review's 20%. PerioCalc also leads on rating (5.0 vs 3.3) and in-app purchases (none vs 6). DHS Board Review's advantage is update cadence (every 9 days vs every 3 months) and ratings volume (34 vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DHS Board Review sells 6 in-app purchases, starting at $2.99 per month. PerioCalc asks for nothing beyond the download.

PerioCalc holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: DHS Board Review has 34 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 20% of DHS Board Review's written reviews are positive against 100% of PerioCalc's.

DHS Board Review ships an update every 9 days, PerioCalc every 3 months. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | DHS Board Review | PerioCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (34 ratings)](https://appshunter.io/ios/app/dhs-board-review/id1334833973/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/periocalc/id6470758932/reviews)** |
| Number of ratings | **34** | 6 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 192 MB | 22 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Dental Hygiene Seminars Inc.](https://appshunter.io/developer/1411308476) | [Rutgers, The State University of New Jersey](https://appshunter.io/developer/458425733) |

## What reviewers say

### DHS Board Review

[App page](https://appshunter.io/ios/app/dhs-board-review/id1334833973)

Prepare for your dental hygiene board exams with a comprehensive study tool. Access thousands of practice questions, case studies, and mock exams to build confidence and improve your chances of passing.

**Highlights:** 4000+ Practice Questions, 12 Case Studies, Mock Board Exams, Timed Tests, Daily Pop Quiz Notifications, Digital Textbook, On-demand Recorded Lectures

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bacic Monthly Subscription | $2.99 | per month |
| Dhs Premium Subscription | $3.99 | per month |
| Premium Subscription | $3.99 | per month |
| Basic Annual Subscription | $29.99 | per year |
| Premium Annual Subscription | $39.99 | per year |
| DHS Extra Feature | $19.99 | one-time |


### 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 DHS Board Review free?

DHS Board Review is free to download, with in-app purchases available.

### Is PerioCalc free?

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

### Which has better reviews, DHS Board Review or PerioCalc?

PerioCalc is rated higher. DHS Board Review averages 3.3 out of 5 from 34 ratings, while PerioCalc averages 5.0 from 6 ratings.

### Do DHS Board Review or PerioCalc have ads?

Neither DHS Board Review nor PerioCalc shows ads.

### Which is updated more often, DHS Board Review or PerioCalc?

DHS Board Review ships an update every 9 days, and PerioCalc every 3 months. Most recently, DHS Board Review was updated on October 25, 2026 and PerioCalc on October 17, 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.*