Gritorbit: Tumbler Log
Batches, Grit & Barrel Stages
$1.99 · Designed for iPad. Not verified for macOS.
Track barrels and batches, plan load ratios, time each stage, log grit and media, compare results, and export a complete tumble card.
Gritorbit is a private rock-tumbling batch lab for hobbyists who want to know exactly what is in every barrel and what happened at each stage.
Build batch cards with stone mix, barrel capacity, load weight, media, grit, start date, inspection notes, and photo references stored outside the app. Use the load workbench to compare entered barrel capacity with rock and media weight, estimate grit demand, schedule the next inspection, and preserve the full lineage from rough through polish.
KEY FEATURES
- Multi-barrel batch and stage records
- Rock, media, grit, and polish inventory
- Load-ratio and grit-demand calculator
- Stage timer plan and inspection checkpoints
- Before/after result notes and batch lineage
- Searchable 110-plate offline field guide
- Local PDF tumble card
- No account, ads, analytics, tracking, subscription, or network requirement
Results depend on your entries and equipment. Confirm material compatibility, safe handling, wastewater rules, and current tumbler guidance before each run.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robert Corbin
- Size
- 89.2 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Corbin
