# Septic Edge vs Rotor Load Calc

The clearest difference is update cadence: Septic Edge at every 2 days against Rotor Load Calc's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Septic Edge sells 1 in-app purchase, starting at $29.99 per month and Rotor Load Calc sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Septic Edge ships an update every 2 days, Rotor Load Calc monthly. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Septic Edge | Rotor Load Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/rotor-load-calc/id6751245025/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 82 MB | 7 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [AQUALOO SOFTWARE LLC](https://appshunter.io/developer/1482660326) | [Josh Cerf](https://appshunter.io/developer/1834218666) |

## What reviewers say

### Septic Edge

[App page](https://appshunter.io/ios/app/septic-edge/id1482660327)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Septic Edge Subscription | $29.99 | per month |


### Rotor Load Calc

[App page](https://appshunter.io/ios/app/rotor-load-calc/id6751245025)

This tool simplifies helicopter load calculations for pilots flying under government contracts. It generates fillable PDFs for performance calculations, signature, and submission, saving time and reducing errors. Easily manage and share your flight planning documents.

**Highlights:** Interagency helicopter load calculation, Fillable PDF generation, Aircraft performance data entry, Automated field population, File organization and sorting, Pilot and manager signature fields, PDF export and sharing options

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $1.99 | per month |
| 1 Year | $19.99 | per year |


## Frequently asked questions

### Is Septic Edge free?

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

### Is Rotor Load Calc free?

Rotor Load Calc is free to download, with in-app purchases available.

### Do Septic Edge or Rotor Load Calc have ads?

Neither Septic Edge nor Rotor Load Calc shows ads.

### Which is updated more often, Septic Edge or Rotor Load Calc?

Septic Edge ships an update every 2 days, and Rotor Load Calc monthly. Most recently, Septic Edge was updated on October 26, 2026 and Rotor Load Calc on October 23, 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.*