# Endurance Performance Training vs K

Endurance Performance Training and K are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Endurance Performance Training ships an update every 3 months, K every 2 months. Both last shipped on November 12, 2026.

## The numbers

| Metric | Endurance Performance Training | K |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 220 MB | 55 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SHAGGY OWL s.r.l.s.](https://appshunter.io/developer/672418138) | [K-Sport World S.r.l](https://appshunter.io/developer/1706833497) |

## What reviewers say

### Endurance Performance Training

[App page](https://appshunter.io/ios/app/endurance-performance-training/id1672931890)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### K

[App page](https://appshunter.io/ios/app/k-pro-sport-tracking/id6472656246)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Endurance Performance Training free?

Endurance Performance Training is free to download, with no in-app purchases.

### Is K free?

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

### Do Endurance Performance Training or K have ads?

Neither Endurance Performance Training nor K shows ads.

### Which is updated more often, Endurance Performance Training or K?

Endurance Performance Training ships an update every 3 months, and K every 2 months. Most recently, Endurance Performance Training was updated on November 12, 2026 and K on November 12, 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.*