# SpoolKeep vs SpoolFlux

The clearest difference is in-app purchases: SpoolFlux at none against SpoolKeep's 1. SpoolFlux also leads on update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SpoolKeep sells 1 one-off in-app purchase. SpoolFlux asks for nothing beyond the download.

SpoolKeep ships an update every 2 months, SpoolFlux weekly. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | SpoolKeep | SpoolFlux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/spoolflux/id6757957454/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free |
| Size | 3 MB | 7 MB |
| Requires iOS | **17** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Claude-Alain Muller](https://appshunter.io/developer/1818892197) | [Reimar Metzen](https://appshunter.io/developer/1453724835) |

## What reviewers say

### SpoolKeep

[App page](https://appshunter.io/ios/app/spoolkeep/id6746877203)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpoolKeep Premium | $1.99 | one-time |


### SpoolFlux

[App page](https://appshunter.io/ios/app/spoolflux/id6757957454)

Manage NFC tags for 3D printer filament spools with support for various formats like OpenSpool and TigerTag. Features automatic color detection, temperature presets, and a comprehensive filament library. Integrates with the OpenFilament Database.

**Highlights:** Read/write multiple NFC tag formats, Automatic color detection via TD1 device, Customizable temperature presets, Extensive filament and material library, Support for multicolor filaments, Import from OpenFilament Database, Save, load, and export filament data

**In-app purchases:** none


## Frequently asked questions

### Is SpoolKeep free?

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

### Is SpoolFlux free?

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

### Do SpoolKeep or SpoolFlux have ads?

Neither SpoolKeep nor SpoolFlux shows ads.

### Which is updated more often, SpoolKeep or SpoolFlux?

SpoolKeep ships an update every 2 months, and SpoolFlux weekly. Most recently, SpoolKeep was updated on September 19, 2026 and SpoolFlux on September 14, 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.*