# TrialMax App vs Emerald

The clearest difference is update cadence: TrialMax App at every 3 weeks against Emerald's every 4 months. Emerald's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

TrialMax App ships an update every 3 weeks, Emerald every 4 months. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | TrialMax App | Emerald |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (99 ratings)](https://appshunter.io/ios/app/trialmax-app/id1002332076/reviews)** | — |
| Number of ratings | **99** | — |
| Positive reviews | 5.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 41 MB | 78 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Signant Health Oy](https://appshunter.io/developer/885378600) | [ERT,INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### TrialMax App

[App page](https://appshunter.io/ios/app/trialmax-app/id1002332076)

Collect data from patients and caregivers in clinical trials for new medicines. Access study-specific questionnaires on the go, with reminders to help you follow the study protocol. Your privacy and anonymity are ensured.

**Highlights:** Patient and caregiver data collection, Study-specific questionnaires, On-the-go data entry, Study protocol reminders, Privacy and anonymity assured, Easy-to-use interface

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

**In-app purchases:** none


### Emerald

[App page](https://appshunter.io/ios/app/emerald-3/id1666789403)

**In-app purchases:** none


## Frequently asked questions

### Is TrialMax App free?

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

### Is Emerald free?

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

### Do TrialMax App or Emerald have ads?

Neither TrialMax App nor Emerald shows ads.

### Which is updated more often, TrialMax App or Emerald?

TrialMax App ships an update every 3 weeks, and Emerald every 4 months. Most recently, TrialMax App was updated on October 11, 2026 and Emerald on September 30, 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.*