# LFA Stairs Pro vs Stair Stringer Calculator Pro

The clearest difference is update cadence: LFA Stairs Pro at every 3 days against Stair Stringer Calculator Pro's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. LFA Stairs Pro sells 2 in-app purchases, starting at $2.99 per month and Stair Stringer Calculator Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

LFA Stairs Pro ships an update every 3 days, Stair Stringer Calculator Pro every 3 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | LFA Stairs Pro | Stair Stringer Calculator Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Size | 18 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lorenzo Francisco Almonte](https://appshunter.io/developer/6782756160) | [京昌 陈](https://appshunter.io/developer/6783155021) |

## What reviewers say

### LFA Stairs Pro

[App page](https://appshunter.io/ios/app/lfa-stairs-pro/id6814916882)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Annual | $29.99 | per year |


### Stair Stringer Calculator Pro

[App page](https://appshunter.io/ios/app/stair-stringer-calculator-pro/id6817401495)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stair Stringer Pro | $9.99 | one-time |


## Frequently asked questions

### Is LFA Stairs Pro free?

LFA Stairs Pro is free to download, with in-app purchases available.

### Is Stair Stringer Calculator Pro free?

Stair Stringer Calculator Pro is free to download, with in-app purchases available.

### Do LFA Stairs Pro or Stair Stringer Calculator Pro have ads?

Neither LFA Stairs Pro nor Stair Stringer Calculator Pro shows ads.

### Which is updated more often, LFA Stairs Pro or Stair Stringer Calculator Pro?

LFA Stairs Pro ships an update every 3 days, and Stair Stringer Calculator Pro every 3 weeks. Most recently, LFA Stairs Pro was updated on October 31, 2026 and Stair Stringer Calculator Pro on October 29, 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.*