# UPREADY AI performance tracker vs Kronx

The clearest difference is in-app purchases: Kronx at none against UPREADY AI performance tracker's 2. Kronx also leads on update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. UPREADY AI performance tracker sells 2 in-app purchases, starting at $4.99 per month. Kronx asks for nothing beyond the download.

UPREADY AI performance tracker ships an update every 3 months, Kronx weekly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | UPREADY AI performance tracker | Kronx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/upready-ai-performance-tracker/id6738921753/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 13 MB |
| Requires iOS | 17.1 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Ana Duque](https://appshunter.io/developer/1549314817) | [Elevon.io](https://appshunter.io/developer/1764280283) |

## What reviewers say

### UPREADY AI performance tracker

[App page](https://appshunter.io/ios/app/upready-ai-performance-tracker/id6738921753)

This AI-powered app analyzes your sleep, workout load, and HRV to provide a daily readiness score. It helps you understand your body's preparedness for the day and offers insights into your recovery and stress levels. You can also connect with friends to share and monitor each other's progress.

**Highlights:** AI-powered readiness score, Load indicator for workout stress, Sleep quality insights, Heart Rate Variability (HRV) tracking, Friends and family monitoring, Privacy-focused data handling

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly Subscription | $49.99 | per year |


### Kronx

[App page](https://appshunter.io/ios/app/kronx/id6742023514)

**In-app purchases:** none


## Frequently asked questions

### Is UPREADY AI performance tracker free?

UPREADY AI performance tracker is free to download, with in-app purchases available.

### Is Kronx free?

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

### Do UPREADY AI performance tracker or Kronx have ads?

Neither UPREADY AI performance tracker nor Kronx shows ads.

### Which is updated more often, UPREADY AI performance tracker or Kronx?

UPREADY AI performance tracker ships an update every 3 months, and Kronx weekly. Most recently, UPREADY AI performance tracker was updated on October 30, 2026 and Kronx on October 25, 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.*