My Filaments vs KatMon
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
My Filaments
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My Filaments is the ultimate app for 3D printing enthusiasts, makers, and professionals who want to accurately and efficiently manage their filament spool inventory. --- Main features: --- - Comprehensive Digital Archive: Track your spools with detailed records including material, color, manufacturer, remaining weight, purchase price, and expanded database parameters. - Advanced RFID Support: - OpenPrintTag: Improved tag reading and added full RFID tag writing capability. - OpenTag3D: Full integration for both reading and writing RFID tags. - Multi-Standard Form Creation: Choose from 5 different industry standards directly in the entry form to structure your spool data exactly how you want. - HueForge & JSON Export: Support for HueForge workflows and one-click JSON export for filament data. - Redesigned Statistics: Revamped analytics page to quickly inspect material usage, costs, and inventory trends. - UI Customization: Personalize your app experience with customizable UI backgrounds. Simplify your 3D printing setup and take full control of your spool inventory with My Filaments!
KatMon
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KatMon is an all-in-one digital toolbox designed for 3D printer users and makers to streamline every step of the production process. More than just a filament management tool, it is a smart ecosystem that brings artificial intelligence, creator networking, STL analysis, and printer maintenance monitoring right to your pocketβkeeping your 3D printing workflow controlled, layer by layer. Key Features: Smart Filament Calculator & Inventory Management: Accurately calculate remaining filament weight using our comprehensive empty spool database, and track your entire inventory with zero errors. STL Viewer & Material Analysis: Preview your 3D models directly within the app, and calculate volume, weight, and material costs before sending them to print. Gemini AI-Powered Assistant: Get instant solutions for print failures, slicing configurations, and technical troubleshooting from a dedicated 3D printing AI companion. Maker Network: Connect with fellow makers, showcase your latest 3D prints, share slicer profiles, and solve technical challenges together with the community. Maintenance Monitor & Scheduler: Never forget nozzle replacements, belt tensioning, or rod lubrication. Extend your printer's lifespan with customized maintenance alerts. 3D Printing News & Tech Trends: Stay up to date with the latest industry innovations, new filament releases, and community updates. Spool Tower Mini-Game: Pass the time while waiting for your long prints to finish with a fun, maker-themed mini-game. Why KatMon? Varying empty spool weights across brands make guessing remaining filament highly inaccurate. Running out of material mid-print ruins projects, wastes time, and costs money. KatMon eliminates the guesswork by providing powerful calculation tools, a built-in STL preview engine, and advanced AI assistance to make your 3D printing workflow controlled, seamless, and efficient. Start creating with the ultimate digital companion for your 3D printer today!
Screenshots
Verdict
The clearest difference is in-app purchases: KatMon at none against My Filaments's 1. KatMon also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.6). On price, update cadence and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. My Filaments sells 1 one-off in-app purchase. KatMon asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | My Filaments | KatMon |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Every 2 days |
| Ads | Yes | No β better |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 9 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | FABRIZIO CALGARO | Olcay OREN |
In-app purchases
My Filaments
- Remove ADS$5.99
KatMon
No in-app purchases









