Comparison

Spoolstock vs OBJ Viewer

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

Head to head
About

Spoolstock

Manage your 3D printing materials and projects with this app. Track filament inventory, monitor print progress, and gain insights into your usage. Syncs across devices and offers smart tracking for remaining filament.

Highlights
  • Filament inventory management
  • QR/barcode scanning
  • Intelligent filament tracking
  • Multi-material print tracking
  • Depletion notifications
  • Usage statistics
  • Multi-device cloud syncing
Features
Read full description

If you are 3D printing, either professionally or personally, you have to manage your progress and your materials. Spoolstock helps you keep track of what you have, what you use, what you like, and what you spend. Keep all your materials and prints in one place, on your phone or your tablet. ------------- You can start today for free for up to 20 filaments, spools, and prints. If you find Spoolstock useful in your 3D printing process, upgrade to a Maker subscription for unlimited access to filaments, spools, prints, and much more! ------------- Comprehensive filament inventory management: Easily track your filament inventory with detailed data points. Use QR/barcode scanning for quick access, add photos, note purchase prices, and customize inventory locations and attributes. Intelligent filament tracking: Know exactly how much filament is left on each spool. Spoolstock's smart system calculates remaining filament using an extensive database of empty spool weights. Enhanced print tracking: Monitor your 3D prints with precision. Spoolstock supports multi-material prints and automatically updates filament availability based on usage during prints. Depletion notifications: Stay informed with notifications when a filament spool is running low or has been depleted. Usage statistics: Gain insights into your printing habits with stats on filament types, brands, colors, and materials used. Flexible workflow integration: Designed to adapt to various workflows, Spoolstock is the perfect companion for both hobbyists and professional 3D printing setups. Multi-device cloud syncing: All data is associated with your Spoolstock account and is always up-to-date. Your data is stored in the cloud and can be accessed from anywhere on any device. Customized label printing: Build a print queue and print labels for your spools quickly and easily. QR codes on every spool for quick scanning and easy access. Supports most wi-fi enabled label printers. NEW! Keep track of your spools with custom NFC tags: Easily tap to find your spools. ------------- We are a small development team passionate about 3D printing. Our goal is to make Spoolstock the best possible platform to manage your 3D printing workflow so you can optimize your processes and increase your productivity. We are brand new, but have big plans for future updates and features. Stay tuned as this tool continues to grow and change as we work together with our users to provide regular updates and new features. Privacy Policy: https://spoolstock.com/privacy EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://spoolstock.com/terms

About

OBJ Viewer

Features
Read full description

Easily open and inspect 3D files directly on your device. Designed for speed and clarity, this 3D file viewer lets you preview models, check geometry, and view parts in clean real-time 3D. Core Features: • Smooth orbit, pan, and zoom controls • Exploded part separation slider • Wireframe and solid mesh rendering modes • Studio lighting and environment presets • Support for .usdz and .obj formats • High-resolution snapshot capture and sharing Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shotexstudio.com/3d-model-viewer-obj-usdz-dae/

Screenshots

Spoolstock4 screens
OBJ Viewer3 screens

Verdict

The call

The clearest difference is in-app purchases: OBJ Viewer at none against Spoolstock's 2. Spoolstock's advantage is iOS requirement (15.0.0 vs 17.6). On price, update cadence, 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. Spoolstock sells 2 in-app purchases, starting at $1.99 per month. OBJ Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

Spoolstock ships an update weekly, OBJ Viewer every 6 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Spoolstock versus OBJ Viewer: the parameters behind the verdict, then further details
ParameterSpoolstockOBJ Viewer
PriceFreeFree
Rating4.5 (119 ratings) — better—
Positive reviews47.1% of reviews—
Number of ratings119 — better—
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0.0 — better17.6
Further details — not scored
Size90 MB1 MB
Age rating4+12+
DeveloperPixel Bus, LLCShota Sukhiashvili

Bugs and requests

Spoolstock

Reported bugs

20 issues
  • Most filaments missing in database
  • NFC does not work
  • Log in and data GONE after update
  • Password reset does nothing
  • CSV export doesn't work
Show 15 more
  • Barcode scanning broken
  • App requires internet connection
  • App crashes constantly
  • App freezes and locks up
  • Unable to print labels
  • Scanning most spools turns up no previous entries
  • App crashes when navigating menus or returning from printing
  • White screen displayed with nothing on it
  • Login screen covered by Dynamic Island
  • Cannot copy-paste passwords
  • Selection of diameter 1.75 impossible
  • Cannot enter started spools
  • Long save times
  • App not adapted to display size
  • Inconsistent language (German/English)

Requested features

9 requests
  • Link app to slicer for project import
  • One-time payment option instead of subscription
  • Show total print time for a project
  • Allow offline use
  • Document filament drying
Show 4 more
  • Overall overview of filament needing drying
  • Improve UI for scrolling on inventory page
  • Add more filament types to database
  • Integration options for slicers

OBJ Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Spoolstock

Subscriptions2
  • Maker Monthly$1.991 Month
  • Maker Yearly$19.991 Year
None

OBJ Viewer

No in-app purchases

Questions

Is Spoolstock free?
Spoolstock is free to download, with in-app purchases available.
Is OBJ Viewer free?
OBJ Viewer is free to download, with no in-app purchases.
Do Spoolstock or OBJ Viewer have ads?
Neither Spoolstock nor OBJ Viewer shows ads.
Which is updated more often, Spoolstock or OBJ Viewer?
Spoolstock ships an update weekly, and OBJ Viewer every 6 days. Most recently, Spoolstock was updated on October 26, 2026 and OBJ Viewer on October 25, 2026.

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