# Knee Injury Tracker vs StepFlow

The clearest difference is update cadence: Knee Injury Tracker at every 4 days against StepFlow's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Knee Injury Tracker sells 7 one-off in-app purchases and StepFlow sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Knee Injury Tracker ships an update every 4 days, StepFlow monthly. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Knee Injury Tracker | StepFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Size | 199 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [FlexiTrace Yazilim Ticaret LIMITED SIRKETI](https://appshunter.io/developer/1703528817) | [Chun Kin Wu](https://appshunter.io/developer/1872852584) |

## What reviewers say

### Knee Injury Tracker

[App page](https://appshunter.io/ios/app/knee-injury-tracker/id6748382534)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Coins | $9.99 | one-time |
| 10 Coins | $17.99 | one-time |
| 1 Coin | $29.99 | one-time |
| 5 Coins | $69.99 | one-time |
| 4 Coins | $98.99 | one-time |
| 10 coin pack | $119.00 | one-time |
| 10 Coins | $191.99 | one-time |


### StepFlow

[App page](https://appshunter.io/ios/app/stepflow-step-by-step/id6758419430)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StepFlow Premium Monthly | $5.99 | per month |
| StepFlow Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is Knee Injury Tracker free?

Knee Injury Tracker is free to download, with in-app purchases available.

### Is StepFlow free?

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

### Do Knee Injury Tracker or StepFlow have ads?

Neither Knee Injury Tracker nor StepFlow shows ads.

### Which is updated more often, Knee Injury Tracker or StepFlow?

Knee Injury Tracker ships an update every 4 days, and StepFlow monthly. Most recently, Knee Injury Tracker was updated on October 2, 2026 and StepFlow on October 7, 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.*