# ForceChk vs Catenary Cables

The clearest difference is in-app purchases: ForceChk at none against Catenary Cables's 2. ForceChk also leads on update cadence (monthly vs every 2 months) and iOS requirement (12.1 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Catenary Cables sells 2 in-app purchases, starting at $59.99 per month. ForceChk asks for nothing beyond the download.

ForceChk ships an update monthly, Catenary Cables every 2 months. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ForceChk | Catenary Cables |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/catenary-cables/id6447140970/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Subscription |
| Size | 15 MB | 31 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [eKeypad Mobile Solutions LLC](https://appshunter.io/developer/293689035) | [Logan Copenhaver](https://appshunter.io/developer/1680415210) |

## What reviewers say

### ForceChk

[App page](https://appshunter.io/ios/app/forcechk/id1536148707)

**In-app purchases:** none


### Catenary Cables

[App page](https://appshunter.io/ios/app/catenary-cables/id6447140970)

This app provides a more accurate and efficient method for calculating the sagging of overhead transmission line conductors. It replaces traditional approximate parabolic equations with precise catenary expressions, saving time and improving accuracy.

**Highlights:** Accurate sag calculations, Precise catenary expressions, Replaces traditional methods, Flexible transit setup, Time-saving efficiency

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $59.99 | per month |
| Yearly | $539.99 | per year |


## Frequently asked questions

### Is ForceChk free?

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

### Is Catenary Cables free?

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

### Do ForceChk or Catenary Cables have ads?

Neither ForceChk nor Catenary Cables shows ads.

### Which is updated more often, ForceChk or Catenary Cables?

ForceChk ships an update monthly, and Catenary Cables every 2 months. Most recently, ForceChk was updated on September 24, 2026 and Catenary Cables on September 8, 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.*