Comparison

Spool Buddy vs RxStorage

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spool Buddy

Effortlessly manage your 3D printing filament inventory. Track brands, colors, and usage with a simple, fast interface. Syncs seamlessly across Apple devices without requiring logins or network calls.

Highlights
  • iCloud syncing
  • No logins or network calls
  • Track brands, colors, and modifiers
  • Search and filter by properties
  • Usage and inventory tracking
  • Optimized for iOS and macOS
Features
Read full description

Filament tracking for 3D printing, without the fuss. Spool Buddy is a simple, fast filament inventory app made for hobbyists who want to know what filament they have, where it is, and how much is left — without accounts, subscriptions, tracking, or complicated setup. Add your filaments, organize them by brand, material, color, location, modifiers, and more. Track usage across one or multiple spools, keep drying logs, attach photos, archive old filament, and export or print your inventory when you need it. Spool Buddy syncs with iCloud, so your filament library stays up to date across iPhone, iPad, and Mac without creating an account. Features include: - Track filament inventory, usage, and remaining amounts - Multi-spool support for filaments - NFC reading and writing - iCloud sync with no logins - Photos for filament entries - Drying logs - Custom brands and materials - Detailed filament information, including colors, polymers, modifiers, fillers, and visual properties - Automatic color names and color family filtering - Support for gradients and complex filament colors - Filter by storage location, brand, color family, modifiers, and polymer - Sort by price, date added, color, brand, and name - Group by brand or material - Usage indicators at a glance - Archive filaments you no longer actively use - Export your inventory to CSV - Print your filament inventory - Optimized for iOS and macOS 26 - Small, fast, and designed to stay out of your way Spool Buddy is completely free to use. There are no subscriptions, no locked features, and no required purchases. In-app purchases are optional tips only, for people who want to support the app’s development. Made by an indie solo developer for people who just want a clean, useful way to manage their filament.

About

RxStorage

Features
Read full description

With NFC and App Clips, RxStorage lets you view item details the moment you tap your phone—no app download, no setup, no friction. See what’s stored, where it is, and key notes in seconds. Built to feel native in every way, it’s the fastest way to access item information exactly when you need it. Tap. View. Done.

Screenshots

Spool Buddy4 screens
RxStorage4 screens

Verdict

The call

The clearest difference is in-app purchases: RxStorage at none against Spool Buddy's 3. RxStorage also leads on update cadence (every 4 days vs every 2 weeks). Spool Buddy's advantage is iOS requirement (18.2 vs 26.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spool Buddy sells 3 one-off in-app purchases. RxStorage asks for nothing beyond the download.

UpkeepUpdate frequency

Spool Buddy ships an update every 2 weeks, RxStorage every 4 days. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Spool Buddy versus RxStorage: the parameters behind the verdict, then further details
ParameterSpool BuddyRxStorage
PriceFreeFree
Rating4.3 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.2 — better26.0
Further details — not scored
Size10 MB18 MB
Age rating4+4+
DeveloperMartian Code Oy其炜 李

In-app purchases

3 purchases

Spool Buddy

One-time3
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99
None

RxStorage

No in-app purchases

Questions

Is Spool Buddy free?
Spool Buddy is free to download, with in-app purchases available.
Is RxStorage free?
RxStorage is free to download, with no in-app purchases.
Do Spool Buddy or RxStorage have ads?
Neither Spool Buddy nor RxStorage shows ads.
Which is updated more often, Spool Buddy or RxStorage?
Spool Buddy ships an update every 2 weeks, and RxStorage every 4 days. Most recently, Spool Buddy was updated on October 25, 2026 and RxStorage on October 5, 2026.

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