# PeakO₂ vs Simple WODTimer

The clearest difference is ads: Simple WODTimer at none against PeakO₂'s shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. PeakO₂ sells 4 in-app purchases, starting at $0.99 per 7 days and Simple WODTimer sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PeakO₂ | Simple WODTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/peako-stamina-and-breath-guide/id6739490313/reviews)** | — |
| Number of ratings | **14** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 5 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [OriginX](https://appshunter.io/developer/1725593771) | [Michal Zbrozek](https://appshunter.io/developer/1853903561) |

## What reviewers say

### PeakO₂

[App page](https://appshunter.io/ios/app/peako-stamina-and-breath-guide/id6739490313)

Enhance your breath control and oxygen efficiency with structured exercises. This app offers personalized training plans, guided sessions, and progress tracking for improved physical and mental endurance. Suitable for athletes, freedivers, and anyone looking to master their breath.

**Highlights:** Personalized O₂ training plans, Customizable breath-hold start time, Guided breath-hold sessions, Visual and audio cues, Progress tracking and milestones, Minimalist and intuitive design

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Monthly | $3.99 | per month |
| Yearly | $17.99 | per year |
| Lifetime | $29.99 | one-time |


### Simple WODTimer

[App page](https://appshunter.io/ios/app/simple-wodtimer/id6761610002)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |
| Buy Me a Snack | $2.99 | one-time |
| Buy Me a Beer | $4.99 | one-time |


## Frequently asked questions

### Is PeakO₂ free?

PeakO₂ is free to download, with in-app purchases available.

### Is Simple WODTimer free?

Simple WODTimer is free to download, with in-app purchases available.

### Do PeakO₂ or Simple WODTimer have ads?

PeakO₂ shows ads; Simple WODTimer does not.

### Which is updated more often, PeakO₂ or Simple WODTimer?

PeakO₂ ships an update monthly, and Simple WODTimer monthly. Most recently, PeakO₂ was updated on October 30, 2026 and Simple WODTimer on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*