Automate ChatGPT pre-prompts with shortcut commands
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
SimmerDown is an unmaintained legacy Chrome extension from 2023 that no longer works with modern ChatGPT interfaces.
According to OpenAITools.app telemetry verified on 2026-11-11, SimmerDown (chromewebstore.google.com) is an AI platform indexed under AI Prompt Generator generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include AIPRM (708.87K visits/mo), Pretty Prompt (44.02K visits/mo), Prompt Genie (67.66K visits/mo).
Abandoned since 2023, doesn't even work with current ChatGPT UI.
Dead extension with zero updates.
Completely broken, wasted my time installing.
Old relic that hasn't been touched in years.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Comes with a set of modular, reusable commands you can drop into a ChatGPT question to steer the answer's detail and style.
Type a short code such as !expert to expand a full pre-prompt, replacing long manual copy-paste of instruction text.
Save your own recurring instructions as commands so personal prompt patterns are available in one keystroke.
A simple toggle lets you switch the extension off when you want to prompt ChatGPT without any inserted text.
Pre-prompts and custom commands stay on your device; the extension does not phone home with your data.
SimmerDown targets a very specific friction point in daily ChatGPT use: the same long framing instruction you paste at the start of every conversation. Instead of retyping a paragraph of context, persona or style rules, the extension stores those instructions and inserts them when you type a short trigger such as !expert. The result is a faster, more consistent prompting routine.
The extension is deliberately small and simple. It is toggled on or off with a single switch, integrates quietly with the ChatGPT web interface, and covers a broad range of use cases, from demanding expert-level answers to enforcing a particular writing style or content format. Shorthand commands mean complex prompts become muscle memory rather than something you keep in a notes file.
Privacy is the design centerpiece: SimmerDown stores all pre-prompts and commands locally in the browser and does not send your data to external servers, and the developer's Chrome Web Store disclosure states that no data is collected or sold. It is a lightweight utility aimed at individuals who prompt ChatGPT often and want less repetition, not a team platform or analytics suite.
Save the context paragraph you paste into every chat as a command and insert it with a few characters instead.
Create style and formatting commands so drafts come back in the voice and structure you need on the first pass.
Use a pre-prompt that nudges ChatGPT toward detailed, well-structured answers for technical or domain-specific questions.
Keep your personal prompt library stored locally in the browser rather than in a third-party cloud account.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | SimmerDown | 0 | — | — | Free | Current |
| 1 | AIPRM | 708.87K | -6.9% | 26% direct | Freemium, Paid | vs AIPRM |
| 2 | Pretty Prompt | 44.02K | +19.3% | 67% direct | Freemium, Contact for Pricing | vs Pretty Prompt |
| 3 | Prompt Genie | 67.66K | -32.4% | 55% direct | Freemium | vs Prompt Genie |
| 4 | Prompt Cowboy | 1.13M | -22.4% | 53% direct | Freemium | vs Prompt Cowboy |
| 5 | Prompt Builder | 113.12K | +22.2% | 19% direct | Freemium | vs Prompt Builder |
| 6 | PromptFolder | 25.85K | -10.6% | 44% direct | Free | vs PromptFolder |
A prompt library and management layer for ChatGPT and other AI models
A prompt library and management layer for ChatGPT and other AI models
A prompt enhancer that restructures rough ideas into clear, effective prompts in one click
A prompt enhancer that restructures rough ideas into clear, effective prompts in one click
Stop paying for AI tokens your tools already have
Stop paying for AI tokens your tools already have
Turn lazy prompts into great ones and get more out of any large language model
Turn lazy prompts into great ones and get more out of any large language model
Turn rough ideas into model-ready prompts in seconds
Organize, build and discover AI prompts for ChatGPT, Midjourney and more
Organize, build and discover AI prompts for ChatGPT, Midjourney and more
Organize, store and paste your prompts anywhere with a shortcut
Organize, store and paste your prompts anywhere with a shortcut
Generate, enhance and organize AI prompts in one searchable personal library
Generate, enhance and organize AI prompts in one searchable personal library
Generate ready-to-use ChatGPT prompts from simple slash commands
Generate ready-to-use ChatGPT prompts from simple slash commands
Minimalist Chrome extension that builds well-structured GPT prompts for you
Minimalist Chrome extension that builds well-structured GPT prompts for you
Organize, search and export your AI chats across ChatGPT, Gemini, Claude and Grok
Organize, search and export your AI chats across ChatGPT, Gemini, Claude and Grok
Free / Open-sourceSlash-command prompt shortcuts for every AI chat app
