Proofly vs sizeless: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Proofly and sizeless — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Proofly
onderceylan (Proofly)
Lightweight Chrome extension for on-device, privacy-first AI grammar, proofreading and writing assistance that works offline.
Key features
- On-device Proofreading: Performs grammar, punctuation and style checks locally on the user's machine so text never leaves the device.
- Offline Functionality: Full proofreading and suggestion capabilities work without an internet connection, enabling use in restricted or disconnected environments.
- Privacy-first Design: Architected to avoid server-side text processing, minimizing data exposure and complying with high privacy expectations and sensitive workflows.
- Lightweight Browser Extension: Small footprint extension for Chrome designed to be non-invasive in the page UI and to avoid heavy resource usage.
- Real-time Writing Assistance: Provides instantaneous suggestions and corrections within browser text fields and editors while typing.
- Open-source Repository: Source code is published on GitHub, allowing inspection, auditing, and self-hosted or unpacked-install options for advanced users.
- On-device grammar correction and proofreading (no network calls)
- Runs offline for total privacy
- Lightweight, non-invasive browser extension UI
- Distributed via Chrome Web Store and source on GitHub
- Can be installed as an unpacked extension from source
- Maintained releases (versioned GitHub releases)
Best for
- Composing and proofreading sensitive emails or legal drafts directly in Chrome while ensuring no text leaves the device.
- Editing documents and essays offline (e.g., on airplanes or in secure environments) with full grammar and style suggestions.
- Privacy-conscious professionals who require local-only language checks for proprietary or confidential content.
- Students and writers who want instant, lightweight grammar corrections in browser-based editors without subscribing to cloud services.
- Teams or enterprises that prefer to audit and deploy browser extensions from source (unpacked or internal store) for tighter control.
- Real-time grammar and spelling checks while composing emails or social posts in the browser
- Proofreading sensitive or private documents without sending text to external servers
- Offline writing assistance in environments without internet connectivity
- Deploying in privacy-conscious workflows or on shared devices
sizeless
sizeless
Turns a smartphone video of an open trench into a centimetre-accurate 3D point cloud, CAD as-built plan and GIS-ready digital twin of buried utilities.
Key features
- Smartphone capture: Field crews record an open trench with a standard iPhone Pro — no specialist scanning hardware and no separate surveying appointment
- Centimetre-accurate point clouds: Reconstruction algorithms developed at ETH Zurich build a high-resolution 3D point cloud of the excavation from the video alone
- Standards-compliant CAD output: Generates as-built plans in DWG and DXF, with couplings and pipe runs identified and measurements simplified
- 3D digital twin and GIS export: Produces a model of the pipe route including building entries that drops into existing GIS systems
- Works without GPS: Captures basement sections and building entry points where GNSS-based surveying fails
- Immediate backfilling: Because capture takes minutes, trenches close right after filming instead of waiting on a survey crew
- Documentation in about 72 hours: Complete records arrive weeks earlier than conventional surveying, enabling prompt connection billing
- Third-party utility capture: Records crossing utilities and as-laid geometry as unbroken 3D evidence, replacing hand sketches
Best for
- A utility network operator documenting residential service connections without booking a surveyor for every site
- A contractor closing a trench the same day instead of leaving it open pending a survey appointment
- Capturing a building entry point in a basement where GPS-based surveying cannot get a fix
- A district heating project producing as-built DWG plans for regulatory sign-off
- Spotting a laying error in the 3D point cloud before backfilling, while the fix is still cheap
- Feeding as-built pipe geometry into a GIS system for long-term network maintenance planning