# Vaping and Health Study vs StudySync

The clearest difference is update cadence: StudySync at fortnightly against Vaping and Health Study's every 2 months. StudySync also leads on ratings volume (3 vs 1). Vaping and Health Study's advantage is iOS requirement (9.0 vs 18.5). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Vaping and Health Study against 5.0 for StudySync. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Vaping and Health Study ships an update every 2 months, StudySync fortnightly. The most recent releases landed on October 22, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Vaping and Health Study | StudySync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/vaping-and-health-study/id1505514158/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/studysync-snyder-lab/id6756796122/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 63 MB | 43 MB |
| Requires iOS | **9.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Harvard University](https://appshunter.io/developer/382088726) | [Stanford University](https://appshunter.io/developer/292922032) |

## What reviewers say

### Vaping and Health Study

[App page](https://appshunter.io/ios/app/vaping-and-health-study/id1505514158)

This research app collects data for a Harvard study on vaping and health. It allows remote participation through health and wellbeing surveys and provides a dashboard to track participant progress. Interested individuals can contact the study organizers for more information.

**Highlights:** Health and wellbeing surveys, Remote participation, Progress tracking dashboard, Data collection tool

**Features:** macOS Compatibility

**In-app purchases:** none


### StudySync

[App page](https://appshunter.io/ios/app/studysync-snyder-lab/id6756796122)

This mobile application serves as the companion for a specific research study. Participants must be pre-enrolled to use its features. It is developed by the Snyder Lab at Stanford University.

**Highlights:** Research study participation, Onboarding required, Stanford University developed, Mobile companion app

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

**In-app purchases:** none


## Frequently asked questions

### Is Vaping and Health Study free?

Vaping and Health Study is free to download, with no in-app purchases.

### Is StudySync free?

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

### Which has better reviews, Vaping and Health Study or StudySync?

Vaping and Health Study and StudySync are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Vaping and Health Study or StudySync have ads?

Neither Vaping and Health Study nor StudySync shows ads.

### Which is updated more often, Vaping and Health Study or StudySync?

Vaping and Health Study ships an update every 2 months, and StudySync fortnightly. Most recently, Vaping and Health Study was updated on October 22, 2026 and StudySync on November 4, 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.*