# ADHA Conferences vs PerioCalc

The clearest difference is review sentiment: PerioCalc at 100% against ADHA Conferences's 0%. PerioCalc also leads on update cadence (every 3 months vs every 13 months) and rating (5.0 vs 4.7). ADHA Conferences's advantage is ratings volume (94 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PerioCalc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ADHA Conferences has 94 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 0% of ADHA Conferences's written reviews are positive against 100% of PerioCalc's.

ADHA Conferences ships an update every 13 months, PerioCalc every 3 months. The most recent releases landed on September 9, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | ADHA Conferences | PerioCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (94 ratings)](https://appshunter.io/ios/app/adha-conferences/id1623241885/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/periocalc/id6470758932/reviews)** |
| Number of ratings | **94** | 6 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 88 MB | 22 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [American Dental Hygienists' Association](https://appshunter.io/developer/1389257741) | [Rutgers, The State University of New Jersey](https://appshunter.io/developer/458425733) |

## What reviewers say

### ADHA Conferences

[App page](https://appshunter.io/ios/app/adha-conferences/id1623241885)

This app allows attendees to take notes and draw directly on presentation slides. Users can also engage with colleagues through in-app messaging, tweeting, and emailing to share information.

**Highlights:** Note-taking on slides, Drawing on presentation slides, Note-taking in poster/exhibitor modules, In-app messaging, Information sharing via tweet/email

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

**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 ADHA Conferences free?

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

### Is PerioCalc free?

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

### Which has better reviews, ADHA Conferences or PerioCalc?

PerioCalc is rated higher. ADHA Conferences averages 4.7 out of 5 from 94 ratings, while PerioCalc averages 5.0 from 6 ratings.

### Do ADHA Conferences or PerioCalc have ads?

Neither ADHA Conferences nor PerioCalc shows ads.

### Which is updated more often, ADHA Conferences or PerioCalc?

ADHA Conferences ships an update every 13 months, and PerioCalc every 3 months. Most recently, ADHA Conferences was updated on September 9, 2026 and PerioCalc on June 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.*