# Fusion ePRO vs SVS | VQI

The clearest difference is update cadence: SVS | VQI at fortnightly against Fusion ePRO's every 2 months. Fusion ePRO'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.

Fusion ePRO ships an update every 2 months, SVS | VQI fortnightly. The most recent releases landed on June 1, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Fusion ePRO | SVS | VQI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (6 ratings)](https://appshunter.io/ios/app/fusion-epro/id1285191348/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 41 MB | 45 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Andrew Schachter16680315703](https://appshunter.io/developer/1285191347) | [Burlington Bytes, LLC](https://appshunter.io/developer/1156029214) |

## What reviewers say

### Fusion ePRO

[App page](https://appshunter.io/ios/app/fusion-epro/id1285191348)

This app facilitates the real-time collection of patient data for clinical studies. It supports complex diary entries with smart checks and controlled time windows for accurate information gathering. Data syncs seamlessly into your overall clinical data management.

**Highlights:** Real-time patient data collection, Complex diary question capture, Smart checks for data accuracy, Controlled diary time windows, Easy synchronization of data

**Features:** macOS Compatibility

**In-app purchases:** none


### SVS | VQI

[App page](https://appshunter.io/ios/app/svs-vqi/id6743632921)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fusion ePRO free?

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

### Is SVS | VQI free?

SVS | VQI is free to download, with no in-app purchases.

### Do Fusion ePRO or SVS | VQI have ads?

Neither Fusion ePRO nor SVS | VQI shows ads.

### Which is updated more often, Fusion ePRO or SVS | VQI?

Fusion ePRO ships an update every 2 months, and SVS | VQI fortnightly. Most recently, Fusion ePRO was updated on June 1, 2026 and SVS | VQI on September 15, 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.*