SENTIFY - Review Sentiment Analyzer (VADER)

SENTIFY is a Streamlit app that can either read a CSV file of reviews or fetch Google Play Store reviews by app ID, label each review as Positive, Negative, or Neutral using VADER, and show overall sentiment percentages.

Features

• Upload a CSV file
• Select the review text column
• Fetch Play Store reviews using app ID (no API key)
• Stratified sampling: Reviews fetched across all star ratings (1-5) for balanced sentiment representation
• Batch fetch and batch sentiment processing with live progress bars
• Per-review sentiment label and compound score
• Overall Positive/Negative/Neutral percentage summary
• Final verdict based on dominant sentiment
• Download labeled CSV output with star ratings (Play Store mode)

Tech Stack

• Python
• Streamlit
• Pandas
• vaderSentiment (VADER)
• google-play-scraper

Installation

pip install -r requirements.txt

Run

streamlit run app.py

UI Preview

CSV Review Analysis

Play Store Review Analysis

Input format

• CSV with at least one column containing review text
• Choose that column in the app UI
• For Play Store mode, provide app ID (example: com.whatsapp)

Why Stratified Sampling?

When fetching Play Store reviews, SENTIFY uses stratified sampling by fetching reviews across all 5 star ratings (1-5 stars) instead of just the newest reviews. This ensures:

• Balanced representation of negative, neutral, and positive reviews
• More accurate overall sentiment analysis
• True reflection of the app's actual sentiment distribution