# Vaping and Health Study vs Surfacing

The clearest difference is update cadence: Surfacing at every 4 days against Vaping and Health Study's every 2 months. Surfacing also leads on ratings volume (4 vs 1). Vaping and Health Study's advantage is iOS requirement (9.0 vs 15.1). 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 Surfacing. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Vaping and Health Study ships an update every 2 months, Surfacing every 4 days. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Vaping and Health Study | Surfacing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/vaping-and-health-study/id1505514158/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/surfacing/id6764362634/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 63 MB | 40 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Harvard University](https://appshunter.io/developer/382088726) | [Corrick Knight](https://appshunter.io/developer/1895748876) |

## 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


### Surfacing

[App page](https://appshunter.io/ios/app/surfacing/id6764362634)

This app allows you to privately track your mental health symptoms, including triggers, intensity, and coping mechanisms. It helps you identify patterns over time and securely share encrypted reports with your therapist. Designed for privacy with no account or internet connection required.

**Highlights:** Log symptoms, intensity, feelings, and triggers, Track coping skills and their effectiveness, Identify personal mental health patterns, Organize tracking for 40+ specific conditions, Export encrypted, password-protected reports, Private, offline, and ad-free design

**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 Surfacing free?

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

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

Vaping and Health Study and Surfacing are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

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

Neither Vaping and Health Study nor Surfacing shows ads.

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

Vaping and Health Study ships an update every 2 months, and Surfacing every 4 days. Most recently, Vaping and Health Study was updated on November 4, 2026 and Surfacing on November 9, 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.*