# VO2 Prime vs ActiveTimeline

The clearest difference is in-app purchases: VO2 Prime at none against ActiveTimeline's 3. VO2 Prime also leads on iOS requirement (15.1 vs 17.6). ActiveTimeline's advantage is update cadence (every 10 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. ActiveTimeline sells 3 one-off in-app purchases. VO2 Prime asks for nothing beyond the download.

VO2 Prime ships an update monthly, ActiveTimeline every 10 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | VO2 Prime | ActiveTimeline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Size | 62 MB | 21 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [EndoMedical Inc](https://appshunter.io/developer/1290814301) | [Andreas Hilbert](https://appshunter.io/developer/1841068112) |

## What reviewers say

### VO2 Prime

[App page](https://appshunter.io/ios/app/vo2-prime/id6748883572)

**Features:** Apple Watch app

**In-app purchases:** none


### ActiveTimeline

[App page](https://appshunter.io/ios/app/activetimeline/id6752802375)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Donation | $0.99 | one-time |
| Medium Donation | $1.99 | one-time |
| Large Donation | $3.99 | one-time |


## Frequently asked questions

### Is VO2 Prime free?

VO2 Prime is free to download, with no in-app purchases.

### Is ActiveTimeline free?

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

### Do VO2 Prime or ActiveTimeline have ads?

Neither VO2 Prime nor ActiveTimeline shows ads.

### Which is updated more often, VO2 Prime or ActiveTimeline?

VO2 Prime ships an update monthly, and ActiveTimeline every 10 days. Most recently, VO2 Prime was updated on October 10, 2026 and ActiveTimeline on October 6, 2026.

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