Tidy

Fix grammar in any Mac app with one shortcut

MacMenu Bar AppsWriting

▲ 0 votes3 commentsLaunched Sep 3, 2026

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Daily #9Weekly #64

Fix spelling and grammar anywhere on your Mac. Select text, press the shortcut, and the corrected version replaces it where it sits. A second shortcut strips the AI slop out of anything that reads like a machine wrote it. Mentions, dates, times and units come back untouched, and lists stay lists. It runs on the model built into macOS. Nothing you select is uploaded. Needs macOS 26 with Apple Intelligence.

AI Analysis

📝 Summary

Tidy is a Mac menu bar app that fixes spelling and grammar in any application via a keyboard shortcut. It uses the on-device macOS Apple Intelligence model for local processing with no data uploaded, ensuring privacy. A second shortcut removes 'AI slop' from machine-generated text while keeping lists, dates, times, units, and mentions intact. It solves pain points of context switching for proofreading and unnatural AI writing tone. Value proposition: seamless, private, and efficient writing assistance directly in place without leaving your workflow.

📈 Market Timing

Favorable for 2025-2026 as Apple Intelligence matures and adoption grows on macOS. Rising demand for on-device, privacy-first AI tools aligns with trends in local AI processing and concerns over cloud data privacy. User needs for efficient writing aids in an AI-heavy content creation era make it well-timed. Excellent Timing.

✅ Feasibility

High. Leverages built-in macOS models, lowering technical barriers, development costs, and eliminating server or data compliance risks. Dependency on specific OS version and model accuracy is a risk, but scalability is strong for a lightweight app. Suitable for small teams experienced in Mac development. High.

🎯 Target Market

Primary segments: Mac users with Apple Intelligence (macOS 26+), including writers, content creators, students, marketers, and professionals in English-speaking regions (US, UK, Europe). Core pain points: inefficient in-app editing and unnatural AI text. Estimated market size: TAM for writing/grammar tools large (hundreds of millions USD), SAM for Mac AI utilities smaller (millions of users). High willingness to pay for convenient, private tools.

⚔️ Competition

Medium. Direct competitors: 1. Grammarly (grammarly.com), 2. LanguageTool (languagetool.org), 3. ProWritingAid (prowritingaid.com), 4. Wordtune (wordtune.com). Advantages: fully local/privacy-focused, system-wide Mac integration, unique AI-slop removal preserving structure. Disadvantages: restricted to macOS 26+ with Apple Intelligence, fewer cross-platform features than cloud competitors. Good differentiation on privacy and seamlessness but faces established players.

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