# KYFCAM vs Stair Stringer Calculator Pro

The clearest difference is in-app purchases: KYFCAM at none against Stair Stringer Calculator Pro's 1. KYFCAM also leads on device support (3 vs 1) and iOS requirement (10.0 vs 17.0). Stair Stringer Calculator Pro's advantage is update cadence (every 3 weeks vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Stair Stringer Calculator Pro sells 1 one-off in-app purchase. KYFCAM asks for nothing beyond the download.

KYFCAM ships an update every 3 months, Stair Stringer Calculator Pro every 3 weeks. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | KYFCAM | Stair Stringer Calculator Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stair-stringer-calculator-pro/id6817401495/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 90 MB | 4 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JSW PACIFIC CORPORATION](https://appshunter.io/developer/999731327) | [京昌 陈](https://appshunter.io/developer/6783155021) |

## What reviewers say

### KYFCAM

[App page](https://appshunter.io/ios/app/kyfcam/id1552859174)

This free utility app allows you to view live video feeds from your camera. It offers motion detection with push or email alerts, and enables two-way audio communication. You can also remotely capture screenshots and start recordings.

**Highlights:** Live video streaming, Motion detection alerts, Two-way audio communication, Remote screenshot capture, Remote recording start

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 KYFCAM free?

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

### Is Stair Stringer Calculator Pro free?

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

### Do KYFCAM or Stair Stringer Calculator Pro have ads?

Neither KYFCAM nor Stair Stringer Calculator Pro shows ads.

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

KYFCAM ships an update every 3 months, and Stair Stringer Calculator Pro every 3 weeks. Most recently, KYFCAM was updated on November 3, 2026 and Stair Stringer Calculator Pro on November 13, 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.*