5+ iOS apps curated and reviewed
Finding the right edigreen apps can be overwhelming with so many options. We've analyzed 5+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 2.6★ (7) | Yes | No | Aug 2026 | |
| 2 |  | Free | 2.9★ (210) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.8★ (4) | No | Yes | Oct 2026 | |
| 4 |  | Free | — | No | Yes | Aug 2026 | |
| 5 |  | Free | — | No | No | May 2026 |
Instantly monitor PM2.5 air quality with real-time updates every 5 minutes. This app provides an easy-to-understand AQI index, global monitoring station data, and personalized recommendations to protect your respiratory health.
This app offers personalized practice and testing for Vietnamese high school students across all subjects. It features a vast question bank, video explanations, and progress tracking to aid in exam preparation and academic improvement.
This app offers a comprehensive platform for learning and preparing for the TOPIK exam. It features a rich collection of practice tests, study materials for vocabulary, grammar, and all four language skills, along with automatic scoring and progress tracking.