DiskfernA comparison from the makers of Diskfern
Diskfern vs GrandPerspective
GrandPerspective offers a configurable open-source treemap. Diskfern adds other views and named storage categories around a folder-analysis workflow.
Last fact-checked:
How we compared these optionsShort answer
Choose GrandPerspective
Choose GrandPerspective if you want a free open-source treemap with configurable colors and advanced filters.
featuresUS App Store pricingChoose Diskfern
Choose Diskfern if you prefer multiple views and named categories with explanations before staging cleanup.
storage viewsdeveloper categoriescleanup workflowImportant context: Both support exploration and removal. GrandPerspective also has search, filters, Quick Look and navigation; price alone doesn't describe its capabilities.
About this comparison
This comparison is published by Diskfern. Competitor information is based on publicly available vendor websites and documentation and was checked on the date shown. We highlight where each product may be a better fit rather than naming a universal winner.
Diskfern is not affiliated with, sponsored by, or endorsed by the products or companies mentioned on this page. Product names and trademarks belong to their respective owners.
Apple, Mac and macOS are trademarks of Apple Inc. Diskfern is an independent product and is not affiliated with or endorsed by Apple Inc.
How to read the evidence
Competitor details come from vendor documentation; Diskfern details come from our product information. Recommendations interpret those workflows. We did not run head-to-head tests or independently audit privacy or safety. A feature we could not verify is marked as not documented, which does not mean it is absent. Pricing and requirements can change.
Diskfern is coming soon. Explore its features and pricing before deciding which workflow fits your Mac.
pricingrequirementsDisk Advisor · On-device AI
Understand a file before you remove it.
Diskfern can explain what a file is, why it’s taking space, and whether it’s safe to remove. Your questions and answers stay on your Mac.
Requires macOS 26+ and an eligible Mac with Apple Intelligence enabled and its model ready. Core storage analysis works without it.
AI answers can be wrong or unavailable. Use them as guidance and review the file before removing it.
requirementslocal analysisperformance and availability
Quick decision guide
| If you want… | Consider |
|---|---|
| Free open-source visual analysis | GrandPerspective |
| Configurable treemap colors and advanced filters | GrandPerspective |
| Named categories and three coordinated views | Diskfern |
| Trash cleanup | Both; inspect their deletion settings |
Choose by your workflow; feature details and sources follow below.
At a glance
Compare the workflows that matter to you. On a small screen, scroll the table horizontally.
| Dimension | GrandPerspective | Diskfern |
|---|---|---|
| Best for | Configurable open-source treemap exploration. features | Folder-level storage exploration with named categories and review before cleanup. storage viewsdeveloper categories |
| Main interface | Treemap with customizable colors and navigation. features | Treemap, sortable list and sunburst, with shared navigation. storage views |
| Large-file discovery | Area shows relative size; advanced filtering can narrow results. features | Size filters and largest-item exploration across scanned folders. storage views |
| Search | Name search and filtering by properties including size and path. features | Name search across scan results; folder scope and kind filters. storage views |
| Quick Look / preview | Quick Look and Finder reveal. features | Native Quick Look, Finder reveal and item details. storage views |
| Cleanup workflow | File/folder deletion to Trash can be enabled in preferences. deletion preferences | Collector → review → authentication → Trash by default. Explicit permanent deletion is available; preferences can change the default. cleanup workflow |
| Safety and context | Deletion and confirmation settings. Deleting a folder includes contents hidden by filters or not scanned. deletion preferences | Safe / Review / Protected labels and protected-path checks. Rebuildable does not mean cost-free to recreate. developer categoriescleanup workflow |
| Developer storage | Named developer-artifact safety classification; path/type filters are documented: not documented in the vendor sources reviewed. features | Named Xcode, Node.js, Android, Docker and model-storage categories; keep project data under review. developer categories |
| App uninstall | A dedicated app uninstaller: not documented in the vendor sources reviewed. features | Selected app bundles can be removed. Running apps, system apps and Diskfern itself are guarded. Full leftover removal is not established. cleanup workflow |
| Duplicate finder | Content-based duplicate matching: not documented in the vendor sources reviewed. features | Duplicate matching is not currently available. Choose a tool with documented duplicate matching if that is your main requirement. performance and availability |
| On-device assistant | An on-device storage assistant: not documented in the vendor sources reviewed. features | Diskfern can explain what a file is, why it’s taking space, and whether it’s safe to remove. Your questions and answers stay on your Mac. Requires macOS 26+ and an eligible Mac with Apple Intelligence enabled and its model ready. Core storage analysis works without it. AI answers can be wrong or unavailable. Use them as guidance and review the file before removing it. requirementslocal analysisperformance and availability |
| Privacy / local processing | An app-specific data-handling statement; open-source status alone doesn't prove telemetry behavior: not documented in the vendor sources reviewed. features | Scanning and Disk Advisor run locally on your Mac. local analysis |
| Broader tools | Focused disk analysis, configurable filters and saved scan handling. features | Focused on storage analysis and cleanup. Data recovery and malware scanning are outside its scope. storage views |
| Pricing and trial | Free download; USD $2.99 in the US App Store · Open source; paid App Store alternative. No trial needed for the free download. The US App Store edition is USD $2.99; App Store updates can lag standalone releases. Confirm your regional price and marketplace license terms. US App Store pricingfeatures | Free analysis: coming soon. Pro and Family cleanup plans: coming soon. pricing |
| macOS and processors | Current product requirements: macOS 14+, Intel or Apple silicon. Version 3.7.2 is offered for macOS 11–13; confirm the release for your Mac before downloading. features3.8.1 release | Core: macOS 14+, Intel and Apple silicon. Advisor additionally needs macOS 26+ and eligible, enabled Apple Intelligence. requirements |
Where GrandPerspective makes sense
Control over a treemap
GrandPerspective suits people who like shaping the display and filters themselves. Color choices and path/property filters can support a specific investigation rather than a general cleanup session.
featuresA capable free download
The free open-source edition includes navigation, search and Quick Look. A paid App Store route is also available; you don't need to pay simply to begin using the standalone tool.
featuresWhere Diskfern differs
Diskfern combines treemap, list and sunburst views with name search, Quick Look, named categories and safety labels. Its Collector gathers potential removals for review. Trash is the default destination, with an explicit permanent option and a preference override.
Duplicate matching is not currently available. Disk Advisor requires macOS 26+ and eligible, enabled Apple Intelligence; AI guidance can be wrong. Review important files before removing them.
storage viewscleanup workflowrequirementsSee how Diskfern works
The biggest workflow difference
Build a filter or start from a category
GrandPerspective gives you controls to shape a treemap investigation. Diskfern's named categories offer a starting point for recognizable storage. Neither replaces knowledge of the folder you're selecting, and both can act on whole folders.
featuresdeletion preferencesdeveloper categoriesThe details that affect your choice
Search is not a unique selling point here
Both can help find names and narrow storage results. Try the kinds of paths and file properties you actually investigate; the workflow around the search may matter more than the presence of a search box.
featuresstorage viewsUnderstand folder deletion
GrandPerspective's preferences document that a folder action includes filtered or unscanned contents. Review the real folder in Finder before removing it. Diskfern's staging and safety labels likewise aren't a substitute for checking valuable content.
deletion preferencescleanup workflowPricing and licensing
GrandPerspective: Free download; USD $2.99 in the US App Store
Open source; paid App Store alternative
No trial needed for the free download. The US App Store edition is USD $2.99; App Store updates can lag standalone releases. Confirm your regional price and marketplace license terms.
Verified . Confirm region, tax, device count and upgrade terms before purchasing.
US App Store pricingfeaturesDiskfern pricing
Free analysis: coming soon. Pro and Family cleanup plans: coming soon.
pricingChoose by your needs
Who should choose GrandPerspective?
- You want an open-source tool with a free standalone download.
- You like adjusting treemap colors and detailed filters.
- You are comfortable interpreting paths and reviewing folders yourself.
Who should choose Diskfern?
- You want to switch between a map, exact sizes and folder depth.
- You want named developer categories and a staging area before cleanup.
- You have macOS 14+ and want a focused storage workflow.
Our recommendation
Choose GrandPerspective if you want a free open-source treemap with configurable colors and advanced filters. Choose Diskfern if you prefer multiple views and named categories with explanations before staging cleanup. There is no universal winner; the documented workflow, your Mac and the job you’re doing should decide.
For a practical starting point, read our related storage guide. You can also compare Diskfern’s features and pricing before checking Diskfern availability.
Frequently asked questions
Is GrandPerspective free?
The standalone open-source download is free. A paid App Store edition is also linked by the project.
Does GrandPerspective have search?
Yes. The project documents name search and advanced filters.
Can GrandPerspective preview files?
Yes. Quick Look and Finder reveal are documented.
Can GrandPerspective delete folders?
Yes, depending on deletion preferences. A folder deletion includes filtered and unscanned contents, so inspect the whole folder.
Which works on macOS 11?
The current GrandPerspective product page lists macOS 14+, like Diskfern. It links older 3.7.2 for macOS 11–13; older download notes give conflicting requirements.
Is open source a privacy guarantee?
No. Open source allows inspection, but this review didn't audit the binary or network behavior. An app-specific privacy statement wasn't verified.
Sources and evidence
Vendor pages establish documented behavior, not independent performance or safety results. Diskfern links explain product behavior and availability. Each record below states the claim it supports and when it was reviewed.
Browse sources and checked dates
- GrandPerspective features
Free open-source download, project-listed $2.99 App Store edition; treemap, name search, advanced filters, Quick Look, navigation and deletion. Latest product requirements: macOS 14+, Intel and Apple silicon.
GrandPerspective · Checked
- GrandPerspective deletion preferences
Configurable deletion/confirmation; folder Trash action includes filtered or unscanned contents.
GrandPerspective · Checked
- GrandPerspective US App Store pricing
US marketplace edition: USD $2.99. The standalone download is free; regional prices and marketplace license terms vary.
GrandPerspective · Checked
- GrandPerspective 3.8.1 release
Current product requirements list macOS 14+, Intel and Apple silicon. The 3.8.1 release notes give a conflicting macOS 11+ minimum; confirm older-system compatibility with the vendor.
GrandPerspective · Checked
- Diskfern storage views
Treemap, list and sunburst views, name search, Quick Look and read-only scans.
Diskfern · Checked
- Diskfern developer categories
Named developer-storage categories and safety labels.
Diskfern · Checked
- Diskfern cleanup workflow
Collector review; Trash by default with a preference override; an explicit permanent mode; authentication and protected-path checks.
Diskfern · Checked
- Diskfern performance and availability
Measured scan, classification and search timings. Results vary by system; Disk Advisor response time and availability can vary. Duplicate matching is not currently available.
Diskfern · Checked
- Diskfern requirements
Core analysis requires macOS 14+ on Intel or Apple silicon. Disk Advisor requires macOS 26+ and an eligible Mac with Apple Intelligence available.
Diskfern · Checked
- Diskfern local analysis
Scanning and Disk Advisor run on your Mac.
Diskfern · Checked
- Diskfern pricing
Free analysis and paid cleanup tiers. Diskfern is coming soon.
Diskfern · Checked
About this comparison
Diskfern is not affiliated with, sponsored by, or endorsed by the products or companies mentioned on this page. Product names and trademarks belong to their respective owners.