# SCPI Commander vs FedNote

The clearest difference is in-app purchases: SCPI Commander at none against FedNote's 3. FedNote's advantage is update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FedNote sells 3 one-off in-app purchases. SCPI Commander asks for nothing beyond the download.

SCPI Commander ships an update weekly, FedNote every 2 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SCPI Commander | FedNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/scpi-commander/id1474671250/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free | — |
| Size | 6 MB | 38 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Michael Augustsson](https://appshunter.io/developer/1455374836) | [Polemics Applications LLC](https://appshunter.io/developer/482504032) |

## What reviewers say

### SCPI Commander

[App page](https://appshunter.io/ios/app/scpi-commander/id1474671250)

Control LXI enabled instruments directly from your device. Send SCPI commands, automate measurements with a built-in script engine, and process results. Easily manage and export instrument data, logs, and screen dumps.

**Highlights:** Connect to LXI instruments, Send SCPI commands, Built-in script engine, Automate measurements, Process measurement results, Export data and logs, Instrument identity inquiry

**Features:** macOS Compatibility

**In-app purchases:** none


### FedNote

[App page](https://appshunter.io/ios/app/fednote/id6742114931)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FedNote Tip $0.99 | $0.99 | one-time |
| FedNote Tip $4.99 | $4.99 | one-time |
| FedNote Tip $9.99 | $9.99 | one-time |


## Frequently asked questions

### Is SCPI Commander free?

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

### Is FedNote free?

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

### Do SCPI Commander or FedNote have ads?

Neither SCPI Commander nor FedNote shows ads.

### Which is updated more often, SCPI Commander or FedNote?

SCPI Commander ships an update weekly, and FedNote every 2 days. Most recently, SCPI Commander was updated on October 13, 2026 and FedNote 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.*