OpenSpool vs Gyroid
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenSpool
This utility app functions as a universal RFID reader for 3D printers. It supports various RFID systems used for 3D printer filament, including OpenSpool, OpenTag, and Creality. More information on integration is available via a provided GitHub link.
- Universal RFID reader
- Reads OpenSpool RFID systems
- Reads OpenTag RFID systems
- Reads Creality RFID systems
- Supports other RFID systems
- 3D printer filament tracking
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OpenSpool is the universal RFID reader for 3d printers. It reads OpenSpool, OpenTag, Creality and other RFID systems for 3d printer filament. See https://github.com/spuder/openspool for more information on integrating a RFID reader into your 3d printer.
Gyroid
This app acts as a digital logbook for 3D printing enthusiasts. It helps track filament inventory, calculate print costs, manage printer maintenance schedules, and log print settings and outcomes. It offers offline functionality and private data storage.
- Filament inventory tracking
- Print cost calculation
- Printer maintenance scheduling
- Print log with settings and photos
- Customizable spool labels
- Offline functionality
- Slicer file import
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Gyroid is the logbook for your whole 3D-printing bench. Track what is left on every spool, what each print really cost, the settings that worked, and when each printer is due for maintenance. Any brand, fully offline, no account. FILAMENT INVENTORY Grams remaining, cost, brand, color, storage location and dry status for every spool. Group the inventory by shelf or dry box so you know which one to walk to. Log a print and the filament comes off the spool automatically. Put a spool on a kitchen scale, type the reading, and Gyroid does the tare math, remembering core weights you name and reuse. Low-filament flags warn you before a roll runs out mid-print, with the reorder link you saved right there. Once a spool has a few prints behind it, Gyroid tells you how many more it will last at your pace. PRINT YOUR OWN SPOOL LABELS Generate QR labels for your shelf and print them from your iPhone. Stick one on each roll: scanning it opens that spool in Gyroid, from the app or straight from the Camera app. No subscription, no label service, no account. THE PRINT LOG Model, printer, filament used, the settings that worked, success or failure, a photo, and the real cost. All searchable later, so "what did I do the last time this worked" takes seconds instead of an evening. WHAT A PRINT ACTUALLY COSTS Filament, electricity, machine depreciation, optional labor and a failure allowance, combined into one number per print. Multicolor prints record every spool they used, each charged at its own price, with power and wear counted once. The same engine powers the free calculators on our website. Sold a print? Note what it went for, and Bench stats turns cost into revenue, profit and margin, and ranks the models worth printing again. MAINTENANCE BY PRINT-HOURS Nozzle, belt and lubrication reminders are scheduled by each printer's real print-hours. Logging a print advances the clock for you. ANY PRINTER, ANY BRAND Not tied to one manufacturer's cloud or account. Track two FDM machines and a resin printer side by side, each with its own history, schedule and settings. DROP IN A SLICER FILE Open a G-code or 3MF export from your slicer and the entry pre-fills itself: model name, print time, grams, material. Two taps and it is logged. ON YOUR WRIST AND HOME SCREEN Filament and maintenance widgets, an Apple Watch app with complications, a Live Activity for the print that is running, Siri shortcuts, and Spotlight search across your prints and spools. LEARN AT THE BENCH Original troubleshooting, print-settings and material guides are built in and readable offline, right next to the printer. PRIVATE BY DESIGN There is no account to create, and no tracking or ads. Your data stays on your device and syncs only through your own iCloud. It works with no signal at all. A free one-file backup restores or moves your whole logbook. FREE AND PREMIUM Free covers the print log, up to 15 spools and 1 printer, storage locations, printable QR spool labels, multi-material prints, low-filament alerts, barcode and QR scanning, one live maintenance reminder, the one-file backup, and every guide. Premium adds unlimited spools and printers, the cost calculator, profit and margin stats, failure analysis by material and printer, the full maintenance schedule on every printer, settings profiles, and CSV export and import. Questions or feedback: support@handlerlabs.app Privacy Policy: https://gyroid.app/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Gyroid at 5.0 against OpenSpool's 4.0. OpenSpool's advantage is in-app purchases (none vs 3) and iOS requirement (15.1 vs 26.0). On price, review sentiment, ratings volume and ads 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
Both are free to download. Gyroid sells 3 in-app purchases, starting at $2.99 per month. OpenSpool asks for nothing beyond the download.
Gyroid holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | OpenSpool | Gyroid |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 15.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 12 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Spencer Owen | Handler Labs LLC |
Customer experience
OpenSpool
Gyroid
In-app purchases
OpenSpool
No in-app purchases
Gyroid
- Gyroid Premium Monthly$2.991 Month
- Gyroid Premium Annual7 Days trial$24.991 Year
- Gyroid Premium Lifetime$44.99









