# Spektrum AS3X Programmer vs OctoApp for OctoPrint/Klipper

The clearest difference is review sentiment: OctoApp for OctoPrint/Klipper at 93% against Spektrum AS3X Programmer's 11%. OctoApp for OctoPrint/Klipper also leads on rating (4.9 vs 2.2) and update cadence (every 10 days vs every 6 months). Spektrum AS3X Programmer's advantage is in-app purchases (none vs 15) and iOS requirement (8.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. OctoApp for OctoPrint/Klipper sells 8 in-app purchases, starting at $0.99 per month. Spektrum AS3X Programmer asks for nothing beyond the download.

OctoApp for OctoPrint/Klipper holds the better App Store score, 4.9 against 2.2. That said, the two scores are not equally well evidenced: OctoApp for OctoPrint/Klipper has 1.3K ratings behind it against 62, so its average is the more settled of the two. Written reviews point the same way: 11% of Spektrum AS3X Programmer's written reviews are positive against 93% of OctoApp for OctoPrint/Klipper's.

Spektrum AS3X Programmer ships an update every 6 months, OctoApp for OctoPrint/Klipper every 10 days. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Spektrum AS3X Programmer | OctoApp for OctoPrint/Klipper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (62 ratings)](https://appshunter.io/ios/app/spektrum-as3x-programmer/id858134237/reviews) | **[4.9 (1.3K ratings)](https://appshunter.io/ios/app/octoapp-for-octoprintklipper/id1658133862/reviews)** |
| Number of ratings | 62 | **1.3K** |
| Positive reviews | 10.6% of reviews | **92.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 249 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Hobby](https://appshunter.io/developer/415542050) | [Erhard Christian Wurthner](https://appshunter.io/developer/1658133864) |

## What reviewers say

### Spektrum AS3X Programmer

[App page](https://appshunter.io/ios/app/spektrum-as3x-programmer/id858134237)

This free app allows users to program Spektrum AS3X receivers with an intuitive interface. Customize flight modes, servo settings, and channel mapping for an expertly tuned flying experience. Compatible with select Spektrum AS3X receivers.

**Highlights:** Create AS3X flight modes, Activate wing and tail mixes, Make servo adjustments, Adjust dual rate and expo, Map output for each channel, Make gain adjustments

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Good layout, easy to use (Gahspidy)
- 👍 Nice App, well laid out (Woolyhair)
- 👍 Works great on multiple iPhones (rcheli108)
- 👍 New app fixes issues (poodle35)

**What reviewers complain about**

- ❌ Not supported AR630 receiver (stuthefoo)
- ❌ Not supported AR631 receiver (jensonearth)
- ❌ No support for helicopters (eric823785862847582738472)
- ❌ Graphics misalignment (txkflier)
- ❌ No app for NX6 (bjonesy68)

**Reported bugs**

- 🐛 App crashes constantly (eric823785862847582738472, mqvw, Supergreekster, Chloe Prince, TaylorcBa, Hallucion)
- 🐛 Graphics misalignment (txkflier, Gahspidy, Supergreekster)
- 🐛 Drops connections (mqvw, FCVDM, rcfkyer)
- 🐛 Does not connect to receivers (leddhedd528, specktrum user, LeDotB, Gusmann)
- 🐛 Receiver craped out after update (gianny911)

**Requested features**

- 💡 Update app for newer receivers (stuthefoo, nate1490)
- 💡 Support for helicopters (eric823785862847582738472)
- 💡 Fix graphics misalignment (txkflier)
- 💡 App for NX6 (bjonesy68)
- 💡 Import model feature (Tupolev pilot, Cables55)


### OctoApp for OctoPrint/Klipper

[App page](https://appshunter.io/ios/app/octoapp-for-octoprintklipper/id1658133862)

Control and monitor your 3D printers remotely from your iOS device. Prepare prints, manage files, and tune settings in real-time with a streamlined interface. Supports OctoPrint, Klipper, and various printer brands.

**Highlights:** Remote printer control, Print preparation, File management, Webcam support, Notifications, Gcode viewer, Plugin support

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support for 1 month | $0.99 | per month |
| Support for 1 year | $6.99 | per year |
| All features (Transfer) | Free | one-time |
| Tip the developer | $1.99 | one-time |
| All features | $11.99 | one-time |
| All features | $12.99 | one-time |
| All features | $14.99 | one-time |
| All features | $17.99 | one-time |

**What reviewers like**

- 🚀 Excellent remote monitoring and control
- 👍 Seamless integration with OctoPrint and plugins
- 💡 Customizable and flexible UI
- 🔒 Secure remote access with OctoEverywhere
- ⭐ Exceptional customer support

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔌 Unreliable remote access at times

**Reported bugs**

- Incorrect notifications for print progress
- Compatibility issues with some printer models

**Requested features**

- Add support for Klipper-based printer firmwares
- Implement iOS widgets for quick status checks
- Improve camera rotation options


## Frequently asked questions

### Is Spektrum AS3X Programmer free?

Spektrum AS3X Programmer is free to download, with no in-app purchases.

### Is OctoApp for OctoPrint/Klipper free?

OctoApp for OctoPrint/Klipper is free to download, with in-app purchases available.

### Which has better reviews, Spektrum AS3X Programmer or OctoApp for OctoPrint/Klipper?

OctoApp for OctoPrint/Klipper is rated higher. Spektrum AS3X Programmer averages 2.2 out of 5 from 62 ratings, while OctoApp for OctoPrint/Klipper averages 4.9 from 1.3K ratings.

### Do Spektrum AS3X Programmer or OctoApp for OctoPrint/Klipper have ads?

Neither Spektrum AS3X Programmer nor OctoApp for OctoPrint/Klipper shows ads.

### Which is updated more often, Spektrum AS3X Programmer or OctoApp for OctoPrint/Klipper?

Spektrum AS3X Programmer ships an update every 6 months, and OctoApp for OctoPrint/Klipper every 10 days. Most recently, Spektrum AS3X Programmer was updated on October 14, 2026 and OctoApp for OctoPrint/Klipper on October 19, 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.*