# Vape Diary — Tracking Tobacco Use Behaviors

> Digital diary for tracking tobacco use behaviors for research participants. (iPhone/iPad app by Xiaoyi Peng.)

- Source: https://appshunter.io/ios/app/vape-diary/id6748416074 (this page in markdown: same URL + `.md`)
- Developer: [Xiaoyi Peng](https://appshunter.io/developer/1825700073)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.0 · 32 MB
- Languages: American English
- Released: 2025-07-28
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/vape-diary/id6748416074/reviews.md

## What is Vape Diary?

Welcome to Vape Diary, a digital diary to track tobacco use behaviors. This mobile app is a part of a research study by the Perelman School of Medicine at the University of Pennsylvania.

Key Features:
- Secure & Private: Your diary entries are stored securely and your privacy is our top priority.
- Simple Interface: Easily log your daily experiences in just a few moments.
- Helpful Reminders: Receive gentle notifications to help you remember to make an entry.
- Contribute to Science: Your participation directly supports ongoing public health research.

This app is for research participants only. An invitation code is required to create an account.

## Key features

- Track tobacco use behaviors
- Secure and private diary entries
- Simple logging interface
- Helpful entry reminders
- Contribute to public health research

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/vape-diary/id6748416074/reviews.md

### 5/5 — User friendly

*2025-07-31*

Good design and very easy to use!

## Frequently asked questions about Vape Diary

### What is Vape Diary used for?

Vape Diary is a digital diary designed to help users track their tobacco use behaviors. It is part of a research study and requires an invitation code to use.

### Is Vape Diary free to use?

Yes, Vape Diary is completely free to download and use. It does not have any in-app purchases or advertisements.

### Does Vape Diary have ads?

No, Vape Diary is ad-free. Users can track their behaviors without any interruptions from advertisements.

### What devices does Vape Diary support?

Vape Diary is available for iPhone and iPod devices. It is designed for iOS users.

### How often is Vape Diary updated?

The latest version of Vape Diary is 1.0.5, last updated on February 20, 2026. Updates are released periodically to improve functionality and security.

### What is the age rating for Vape Diary?

Vape Diary has an age rating of 17+. This is due to the nature of the behaviors it tracks.

### How is my privacy protected in Vape Diary?

Vape Diary prioritizes user privacy. All diary entries are stored securely, and the app is designed with privacy as a top concern for research participants.

### Can I use Vape Diary without an invitation code?

No, Vape Diary is exclusively for research participants. An invitation code from the Perelman School of Medicine is required to create an account and use the app.

## Version history (last 5 releases)

### 1.0.5 — 2026-02-20

- Fixed email verification
- Redesigned the color scheme

### 1.0.4 — 2025-11-13

Vape Diary 1.0.4
- Updated the questionnaire design and data structure

### 1.0.3 — 2025-09-23

- A few minor bugs were fixed

### 1.0.2 — 2025-09-21

- Email verification was added

### 1.0 — 2025-07-28

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*