ChatGPT vs O₂ Buddy: Blood Oxygen
Side-by-side comparison on App Store — Updated 2026
| Metric | ChatGPT | O₂ Buddy: Blood Oxygen |
|---|---|---|
| Developer | OpenAI OpCo, LLC | Minorbits LLC |
| Rating | 4.8★ | 4.5★ |
| Reviews | 6.1M | 35 |
| Installs | — | — |
| Price | Free | $0.99 |
| In-App Purchases | Yes (5 items) | No |
| Best Rank | #1 | #45 |
| Content Rating | 12+ | 4+ |
| Last Updated | 2026-03-10 | 2025-09-06 |
ChatGPT vs O₂ Buddy: Blood Oxygen: Overview
ChatGPT and O₂ Buddy: Blood Oxygen are both GAMES apps available on the App Store. ChatGPT has a 4.8-star rating from 6.1M reviews, while O₂ Buddy: Blood Oxygen has 4.5 stars from 35 reviews. In terms of rankings, ChatGPT reaches #1 and O₂ Buddy: Blood Oxygen reaches #45 in the GAMES charts. ChatGPT offers 5 in-app purchases, while O₂ Buddy: Blood Oxygen offers no in-app purchases.
Frequently Asked Questions
Which is better, ChatGPT or O₂ Buddy: Blood Oxygen?
Based on user ratings, ChatGPT (4.8★) is rated higher than O₂ Buddy: Blood Oxygen (4.5★). However, the best choice depends on your specific needs.
Is ChatGPT or O₂ Buddy: Blood Oxygen more popular?
ChatGPT has more reviews (6.1M) compared to O₂ Buddy: Blood Oxygen (35), suggesting it is more widely used.
Are ChatGPT and O₂ Buddy: Blood Oxygen free?
ChatGPT is free with in-app purchases. O₂ Buddy: Blood Oxygen is $0.99. View IAP prices.
What category are ChatGPT and O₂ Buddy: Blood Oxygen in?
Both apps are in the GAMES category on App Store. See the full GAMES category report.