DriveSync 
Noject 
DeltaSync 
Choose DeltaSnap if...
You need instant copy-on-write checkpoints before risky edits, history for files beyond a selected project vault, deleted-name search, volume-wide path diffs, Finder recovery, monitoring, or CLI and external-agent automation.
vs. 
Project file version control Direct workflow alternative
Updated July 27, 2026
DeltaSnap vs. Keeply
Keeply and DeltaSnap both make version history approachable beyond source code. Keeply protects selected project folders with durable file versions, notes, document-aware visual comparison, work copies, and local or NAS vaults. DeltaSnap captures native APFS volume checkpoints, indexes current and deleted paths, audits filesystem-wide changes, and gives scripts and external AI agents a checkpoint protocol.
Short answer
Direct workflow alternative
Choose DeltaSnap when the safety boundary should cover an APFS volume and the main question is “what changed anywhere around this operation?” Choose Keeply when the unit of work is a project and durable versions, decision notes, document-specific comparison, and experimental work copies matter more than native snapshots.
Side-by-side
Features and capabilities
Current as of July 27, 2026
| Capability |
DeltaSnap
| Keeply |
|---|---|---|
| Primary job | ✓ Version Control and selective undo for indexed files across managed APFS volumes. | ✓ Long-lived version control and decision history for selected project folders. |
| Other apps' snapshots | ✓ Mounts, indexes, compares, and restores single files from snapshots other tools left behind (Time Machine local, Carbon Copy Cloner, SuperDuper, Arq) on any tracked APFS volume, and never rotates or expires them. | − Versions are Keeply's own copies of files in the folders you enroll. APFS snapshots created by other tools are outside its model. |
| Checkpoint and restore speed | ✓ An APFS snapshot is copy-on-write metadata, so a checkpoint completes in milliseconds and copies nothing at creation. History lives on the same physical disk, so restoring a file is a local copy with no destination to wake, mount, or reach. | ◐ Durable versions are written copies, so capture cost scales with the files being protected rather than completing in constant time. |
| Storage model | ✓ Native APFS snapshots share unchanged blocks with the live volume; DeltaSnap stores a local metadata index alongside them. | ✓ Project files and history live in a local disk or NAS vault using a standard folder structure controlled by the user. |
| Capture scope | ✓ A checkpoint captures the complete selected APFS Data volume; the index narrows history back to useful paths. | ✓ The user chooses project folders to protect; Keeply records saves within those projects. |
| Version history | ✓ Browse current and deleted paths, then inspect each item’s distinct captured versions and serving snapshots. | ✓ Records every project version, with version notes and one-click return to an earlier state. |
| Historical search | ✓ Search current and deleted names and paths within one volume or across every managed volume. | ◐ The official product page focuses on project history but does not advertise a comparable cross-vault deleted-file search index. |
| Change comparison | ✓ Compares snapshot trees and classifies added, removed, modified, replaced, and moved paths; it is not a semantic Office diff. | ✓ Shows highlighted side-by-side differences for Office files, PDFs, and images; other formats retain versions for restore. |
| Selective recovery | ✓ Restore a copy, drag out a version, or safely replace one file or folder without rolling back the volume. | ✓ One-click restore returns a project file to any retained version. |
| Experiments and context | ◐ Snapshot names and JSON tags can record milestones and automation context, but DeltaSnap does not merge branches. | ✓ Version notes record decisions, while work copies can branch from a project and merge back later. |
| AI and automation | ✓ Full dsnap CLI plus a portable skill for external agents to checkpoint, tag, diff, and recover their change rounds. | ◐ Optional in-app AI assistant can use a chosen API or local model; no equivalent snapshot automation CLI is advertised. |
| Failure boundary | − Snapshots remain on the source volume and do not survive loss or erase of that storage. | ◐ Vault placement is user-controlled; a NAS or separate drive can cross the project machine’s failure boundary. |
| Platform and model | ✓ Native macOS 15+ app with a 30-day trial. Individual license US$49 one time for all your household Macs, including every 1.x update; Business licensing by quote. | · Windows and macOS downloads; the current individual tier is advertised as free. |
Where DeltaSnap wins
- Native APFS copy-on-write checkpoints capture the full eligible volume without copying every project file into a version store.
- Temporal Search and Version Control include indexed files that have been deleted from the live namespace.
- Snapshot comparison reports path changes across the volume, including moves, replacements, and unexpected out-of-project edits.
- Finder, CLI, schedules, retention, holds, tags, and monitoring operate on the same native snapshot history.
- The agent skill wraps external tools in pre/post checkpoints instead of acting as a document-editing assistant itself.
Where Keeply wins
- Project versions can carry notes that preserve why a change was made.
- Document-aware side-by-side comparison for Word, Excel, PowerPoint, PDF, and image files.
- Work copies support experimental branches that can later merge into the main project.
- Local and NAS vault options with readable standard folder structures.
- Windows and macOS availability, plus an optional bring-your-own-key or local-model AI assistant.
Best fit
Choose Keeply if...
You want project-oriented file versioning with durable notes, visual comparison for Office documents, PDFs, and images, work copies that can merge back, cross-platform clients, or history stored in a normal folder or NAS vault.
FAQ
Common questions
Do DeltaSnap and Keeply store versions the same way? +
No. DeltaSnap uses native APFS volume snapshots and derives a searchable local index from retained checkpoints. Keeply stores project versions in a user-controlled local or NAS vault. That difference affects capture scope, portability, storage growth, and what survives a disk failure.
Which app has the better visual diff? +
They answer different questions. DeltaSnap classifies filesystem paths changed between two volume checkpoints, which is useful for auditing scripts and agents. Keeply advertises content-aware side-by-side comparison for Office documents, PDFs, and images.
Does Keeply compete with the DeltaSnap AI agent skill? +
Only partly. Keeply offers an optional assistant that works with selected file content. DeltaSnap’s open skill teaches external coding and desktop agents to take pre/post APFS checkpoints, tag them, inspect the path-level blast radius, and recover files.
Sources and methodology +
Competitor capabilities are summarised from official product pages, manuals, release notes, and support documentation. DeltaSnap claims reflect the product page and current documentation reviewed on July 27, 2026. A “Strong” mark means the capability is substantively available, not that the two implementations are identical.
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Product names and trademarks belong to their respective owners. This comparison is not sponsored by or affiliated with them.
