SpoolTool vs iDryer
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
SpoolTool
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SpoolTool is a clean and easy-to-use app for tracking your 3D printing filament en accessories. Keep an overview of your filament spools, materials and remaining weight and accessories, so you always know what you have available before starting a print. Key features: ⢠Track filament spools and remaining weight ⢠Support for common materials like PLA, PETG and TPU ⢠Stock inventory ⢠Accessory inventory ⢠Simple and distraction-free interface ⢠iCloud synchronization SpoolTool+ (optional in-app purchase): ⢠Unlock additional filament materials ⢠Unlock all accessories ⢠Add more brands and detailed filament information ⢠Enable cost calculation features ⢠Configure spool stock locations SpoolTool does not require an account and does not collect personal data. App data can be stored securely using iCloud when enabled on your device. Built with focus on simplicity, privacy and ease of use.
iDryer
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Wet filament ruins prints. iDryer keeps it dry automatically while you focus on other things. The first app for controlling the iDryer filament dryer. Connect your device and get full control, monitoring, and process visualization. REAL-TIME TEMPERATURE AND HUMIDITY Track the drying process without having to stay nearby. All key readings are on the home screen. WEIGHT CONTROL See filament weight on the spool and how much moisture has been removed. No guesswork, just data. DRYING PROFILES Ready-made modes for drying most materials. Expand your library, share, browse community profiles, and get better results. PUSH NOTIFICATIONS Drying is complete - your phone will let you know. Come back only when the filament is ready. LAN AND CLOUD Control your device on the local network or remotely through the cloud. FILAMENT CATALOG Brands, material types, and key properties are always within reach. SESSION HISTORY Analyze results, share, compare sessions, and improve print quality. Built for people who take 3D printing seriously.
Screenshots
Verdict
The clearest difference is in-app purchases: iDryer at none against SpoolTool's 1. iDryer also leads on iOS requirement (13.0 vs 26.0). SpoolTool's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. SpoolTool sells 1 one-off in-app purchase. iDryer asks for nothing beyond the download.
SpoolTool ships an update weekly, iDryer every 6 weeks. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.
| Parameter | SpoolTool | iDryer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly ā better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No ā better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 13.0 ā better |
| Further details ā not scored | ||
| Size | 9 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Luc Janssen | Ruslan Pavliuchenko |
In-app purchases
SpoolTool
- SpoolTool+$1.99
iDryer
No in-app purchases









