Kalshi: Trade the World Cup vs O₂ Buddy: Blood Oxygen
Side-by-side comparison on App Store — Updated 2026
| Metric | Kalshi: Trade the World Cup | O₂ Buddy: Blood Oxygen |
|---|---|---|
| Developer | KalshiEX LLC | Minorbits LLC |
| Rating | 4.7★ | 4.5★ |
| Reviews | 70.4K | 35 |
| Installs | — | — |
| Price | Free | $0.99 |
| In-App Purchases | No | No |
| Best Rank | #2 | #45 |
| Content Rating | 17+ | 4+ |
| Last Updated | 2026-03-11 | 2025-09-06 |
Kalshi: Trade the World Cup vs O₂ Buddy: Blood Oxygen: Overview
Kalshi: Trade the World Cup and O₂ Buddy: Blood Oxygen are both GAMES apps available on the App Store. Kalshi: Trade the World Cup has a 4.7-star rating from 70.4K reviews, while O₂ Buddy: Blood Oxygen has 4.5 stars from 35 reviews. In terms of rankings, Kalshi: Trade the World Cup reaches #2 and O₂ Buddy: Blood Oxygen reaches #45 in the GAMES charts.
Frequently Asked Questions
Which is better, Kalshi: Trade the World Cup or O₂ Buddy: Blood Oxygen?
Based on user ratings, Kalshi: Trade the World Cup (4.7★) is rated higher than O₂ Buddy: Blood Oxygen (4.5★). However, the best choice depends on your specific needs.
Is Kalshi: Trade the World Cup or O₂ Buddy: Blood Oxygen more popular?
Kalshi: Trade the World Cup has more reviews (70.4K) compared to O₂ Buddy: Blood Oxygen (35), suggesting it is more widely used.
Are Kalshi: Trade the World Cup and O₂ Buddy: Blood Oxygen free?
Kalshi: Trade the World Cup is free. O₂ Buddy: Blood Oxygen is $0.99.
What category are Kalshi: Trade the World Cup and O₂ Buddy: Blood Oxygen in?
Both apps are in the GAMES category on App Store. See the full GAMES category report.