Proofly vs YC Has It: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Proofly and YC Has It — 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
YC Has It
YC Has It
Describe your problem in plain English and get the Y Combinator startup that solves it — 4,000+ active YC companies indexed.
Key features
- Plain-English Problem Search: Describe what you need and get matched to relevant YC companies
- 4,000+ YC Companies Indexed: Coverage of the active Y Combinator startup ecosystem
- Rewritten Descriptions: Every company is described in user language, not marketing copy
- Reasoning Included: Each match explains why the startup solves your stated problem
- Pricing & Integrations Surfaced: Compare cost and stack fit inline with the recommendation
- 'Not For' Section: Explicitly flags which use cases each startup is not a fit for
- No Login Required: 100% free forever with no signup
Best for
- Find a YC startup that solves a specific engineering or business problem
- Compare multiple YC companies in the same category by pricing and integrations
- Discover niche B2B tools built by recent YC batches
- Research the YC ecosystem without scrolling batch-organized directories
- Rule out ill-fitting startups quickly using the 'Not For' explanations
- Vet a category before founding your own YC-adjacent startup