Is Prompt Enhancer a good Kerlig alternative?

It depends on what you need. Prompt Enhancer is a good Kerlig alternative if your main job is writing prompts for Claude Code, Cursor, or Claude.ai — it rewrites your rough draft in-place into Anthropic's XML schema in under 4 seconds, without leaving the app you're in. If you need a general writing assistant for grammar, tone, summaries, or multi-turn chat, Kerlig is the better fit.

Is there a cheaper or more focused Kerlig alternative?

Prompt Enhancer is $29 one-time — with no subscription. It does one thing: restructure your draft into a properly formatted LLM prompt. If that's your bottleneck, it's a focused, lower-cost Kerlig alternative. For pricing on Kerlig, check their site directly.

Prompt Enhancer: The Kerlig Alternative Built for Claude XML Prompts

Name: Prompt Enhancer
Author: Prompt Enhancer

If you’re looking for a Kerlig alternative, here’s an honest comparison. Both apps live in your menu bar. Both use a global hotkey. Both work system-wide across any macOS app. The difference is in what they actually do with your text.

What Kerlig does well

Kerlig is a mature, polished writing assistant. It ships with a library of presets for fixing grammar, changing tone, summarising, translating, and writing replies — across 350+ AI models (OpenAI, Anthropic, Google, Groq, Ollama). Multi-turn chat, PDF attachment support, and a well-designed actions editor make it a genuinely good general-purpose assistant. One-time $47, BYOK, notarized by Apple.

If you need “AI for everything written”, Kerlig earns its price.

What Prompt Enhancer does — and only does

Prompt Enhancer solves one problem: turning a rough draft into a properly structured prompt for an LLM.

You write a sloppy prompt. You press ⌃⌥⌘P. The app rewrites it in-place into Anthropic’s official XML schema — <role>, <context>, <task>, <output_format> — in under 4 seconds. The rewritten prompt replaces your draft wherever you typed it: Claude.ai, ChatGPT, VS Code, Cursor, Slack, Notion, Linear, Figma, Mail, Safari.

No sidebar. No mode switch. No copy-paste. Just a better prompt where you started typing.

This is not a “make it clearer” rewrite. It applies the same XML prompt structure Anthropic recommends in their own documentation for getting the most out of Claude.

Who needs what

Choose Kerlig if you:

Need a general writing assistant (grammar, tone, summaries, translations)
Work across many AI providers and want model choice at runtime
Need PDF/document chat or multi-turn conversations
Value a mature, notarized app with established reviews and support

Choose Prompt Enhancer if you:

Write prompts for Claude Code, Cursor, or Claude.ai every day
Want in-place rewriting without leaving the app you’re in
Care that the result follows Anthropic’s actual prompt engineering XML standard — not a generic “improve this” pass
Prefer a smaller, focused tool at a lower one-time price

Pricing

Prompt Enhancer is $29 one-time. Kerlig starts at $47 one-time. Both are BYOK with no subscription — you pay only for API tokens you consume.

Prompt Enhancer offers 3 free enhancements with no signup, then a 7-day free trial. No credit card needed to try it.

See Prompt Enhancer pricing →

How Prompt Enhancer compares as a Kerlig alternative

Feature	Prompt Enhancer	Alternative
Primary use case	Restructures your draft into Anthropic XML prompt schema in-place	General writing assistant: grammar, tone, summaries, translations, chat
Works in any app system-wide	Yes — rewrites text in-place wherever your cursor is	Yes — same approach via global hotkey
AI providers supported	Anthropic (Claude) — optimized for Claude XML standard	350+ models: OpenAI, Anthropic, Google, Groq, Ollama and more
Pricing	$29 one-time per platform	$47 one-time (1 device), no subscription
Free tier	3 free, no signup, then a 7-day free trial (BYOK is a Pro feature)	No free tier; BYOK with paid license
Money-back guarantee	30 days, no questions	14 days, no questions
Apple notarization	Yes — notarized & stapled since June 2026; installs without Gatekeeper warning	Notarized — installs without Gatekeeper warning
Multi-turn chat	No	Yes
PDF / document support	No	Yes
Grammar / tone / translation	No — single-purpose prompt structuring only	Yes — core feature set
Windows build	Yes (.msi, Ctrl+Alt+P)	No (macOS only)
App size	~793 KB native Swift, Apple Silicon	Native macOS, size not publicly disclosed
Track record	Public beta 2026-05-23, v0.1.1 on 2026-05-27 — brand new	Established product with public reviews on G2 and Capterra

Honest caveats

Prompt Enhancer launched on 2026-05-27. It has no user reviews, no press coverage, and no track record yet. Kerlig is the safer choice if an established reputation matters to you.
The macOS DMG is Apple-notarized since June 2026 — no Gatekeeper warning. The Windows installer may show a one-time SmartScreen “unknown publisher” prompt while code-signing reputation accumulates.
Prompt Enhancer does not do grammar correction, tone rewriting, summarization, translation, or multi-turn chat. If you need any of those, Prompt Enhancer is not the right tool — get Kerlig.
Kerlig supports 350+ AI models. Prompt Enhancer is built specifically for Anthropic’s Claude XML prompt standard. If you primarily use GPT-4, Gemini, or local models, Kerlig is more flexible.
Prompt Enhancer is $29 one-time. Kerlig at $47 includes a broader feature set, so the price gap reflects scope, not quality.
Linux is not available for Prompt Enhancer (planned Q3 2026). Kerlig is also macOS-only.