# SmarTrial vs Periodontal Chart

The clearest difference is in-app purchases: SmarTrial at none against Periodontal Chart's 2. SmarTrial also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). Periodontal Chart's advantage is update cadence (weekly vs every 3 weeks) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Periodontal Chart sells 2 in-app purchases, starting at $1.99 per month. SmarTrial asks for nothing beyond the download.

SmarTrial ships an update every 3 weeks, Periodontal Chart weekly. The most recent releases landed on September 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SmarTrial | Periodontal Chart |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 39 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 12+ |
| Developer | [ACTIVAID K.K.](https://appshunter.io/developer/1515234653) | [Yuki Kuwahara](https://appshunter.io/developer/1464637125) |

## What reviewers say

### SmarTrial

[App page](https://appshunter.io/ios/app/smartrial/id1563673014)

**Features:** macOS Compatibility

**In-app purchases:** none


### Periodontal Chart

[App page](https://appshunter.io/ios/app/periodontal-chart/id1603040583)

This app allows dentists to create, save, and print detailed periodontal examination charts. It supports input for PPD, Mobility, and PCR measurements, streamlining patient data management for dental professionals.

**Highlights:** Create periodontal charts, Input PPD, Mobility, PCR, Save patient data, Print examination records, Designed for dentists

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ペリオチャートサブスクリプション | $1.99 | per month |
| ペリオチャートサブスクリプション | $5.99 | per month |


## Frequently asked questions

### Is SmarTrial free?

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

### Is Periodontal Chart free?

Periodontal Chart is free to download, with in-app purchases available.

### Do SmarTrial or Periodontal Chart have ads?

Periodontal Chart shows ads; SmarTrial does not.

### Which is updated more often, SmarTrial or Periodontal Chart?

SmarTrial ships an update every 3 weeks, and Periodontal Chart weekly. Most recently, SmarTrial was updated on September 15, 2026 and Periodontal Chart on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*