# Spool Programmer vs Sc4nR

The clearest difference is update cadence: Spool Programmer at every 5 days against Sc4nR's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spool Programmer ships an update every 5 days, Sc4nR every 9 months. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Spool Programmer | Sc4nR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/spool-programmer/id6753324939/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 months |
| Monetization | Free | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Martin Bogomolni](https://appshunter.io/developer/1843504794) | [KyotoTech LLC](https://appshunter.io/developer/1751013505) |

## What reviewers say

### Spool Programmer

[App page](https://appshunter.io/ios/app/spool-programmer/id6753324939)

This app allows users to program RFID tags for 3D printing filament spools. It supports various filament types and spool sizes, offering features like reading existing tags, checking memory, and custom color selection. All processing is done on-device for privacy and security.

**Highlights:** Write filament data to NTAG215/216 tags, 18 pre-configured filament profiles, Read and verify existing tags, Check tag status and memory, Format tags for programming, Custom color selection, Support for various spool sizes

**Features:** macOS Compatibility

**In-app purchases:** none


### Sc4nR

[App page](https://appshunter.io/ios/app/sc4nr/id6755644278)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spool Programmer free?

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

### Is Sc4nR free?

Sc4nR is free to download, with no in-app purchases.

### Do Spool Programmer or Sc4nR have ads?

Neither Spool Programmer nor Sc4nR shows ads.

### Which is updated more often, Spool Programmer or Sc4nR?

Spool Programmer ships an update every 5 days, and Sc4nR every 9 months. Most recently, Spool Programmer was updated on September 18, 2026 and Sc4nR on September 12, 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.*