Welcome to SaaS Brew, a daily newsletter where we share useful SaaS tools and workflows for founders, builders, and small business owners.
Each edition highlights one product, explains what it does, why it matters, and who it is for. No hype. Just tools worth trying.
Today's brew looks at a problem that gets worse the more you use AI tools: your best prompts keep disappearing.
You spend an hour getting a prompt exactly right. The output is clean, the format is perfect, and you know you will need it again. Then it disappears into a chat thread, a sticky note, or a doc you opened once and forgot. The next time you need it, you piece it together from memory and get something that almost works.
You try keeping prompts in a notes app. Or a shared doc. Or a folder of text files named things like "prompts final v2." None of it sticks because none of it is built around how prompts actually get used. You end up rewriting the same setup instructions over and over, once per project, once per tool, once per week.
You need a dedicated place to store, organize, and access your prompts without hunting through old conversations or rebuilding from scratch every time.
That is where PromptPlanner fits in.
PromptPlanner organizes your entire prompt library into a visual board on your Mac. No accounts. No cloud. No sign-up. Each project gets its own lane with a stated goal, and every prompt lives as a plain text card you copy to your clipboard in a single click. Prompts you reuse can be scheduled to resurface on a daily, weekly, or monthly cycle so they are ready before you think to look for them. Built for Mac users running multiple AI projects at once, PromptPlanner keeps each project's context separate and every prompt within reach.
Who it is for:
Founders managing several AI workflows across different products, clients, or teams at the same time
Freelancers who brief AI tools repeatedly and need their best prompts ready without rebuilding them each time
Developers working across multiple codebases or AI agents who maintain different prompt sets for different contexts
Content creators who rely on recurring prompt templates for research, drafting, and editing cycles
Anyone who has lost a well-crafted prompt inside a chat history and had to rewrite it from memory
Common use cases:
Set up a separate board for each client so prompts never get mixed across projects
Schedule your weekly planning or review prompt to resurface automatically every Monday morning
Export a full project lane as a bundled instruction set before briefing an AI agent on a new task
Copy a tested prompt directly into ChatGPT, Claude, or any other tool in one step without switching apps
Use the stats view to spot which projects have stalled and which are moving through their backlog
What it does:
It organizes prompts into project lanes, each with its own goal, so context stays separated across clients and tasks
It copies any prompt to your clipboard with one click, removing the gap between your library and your AI tool
It schedules prompts to resurface on daily, weekly, two-week, or four-week cycles so recurring templates rebuild themselves
It runs entirely on your Mac with no account or internet connection required, keeping every prompt private by default
It tracks created versus completed cards across all boards so you can read project momentum without leaving the app
Why it stands out:
It stores everything locally, so your prompts, goals, and project context never leave your device
It lives in the Mac menu bar and opens with Cmd+Tab, so reaching your prompt library never interrupts your flow
It separates each project's goal and pending prompts into distinct lanes, making it easier to run several AI agents in parallel without mixing context
It replaces scattered notes, docs, and chat threads with a single board purpose-built for how prompts actually get used
Quick take: If you are spending more time finding prompts than using them, PromptPlanner could turn a scattered library into a system you actually return to every day.
More tomorrow in SaaS Brew ☕