Free

Just Prompts

A prompt-engineering tool built around Additive Prompting – a documented technique for layering context and nuance into a prompt, demonstrated at 90%+ output coherence in real testing with Midjourney and ChatGPT.

3.0 Good 3.0

Bottom line: Just Prompts is a capable ai infrastructure & agent tooling tool, best known for additive Prompting – a documented, layered prompt-structuring technique. It has a free plan.

Built on a real, publicly documented and tested prompting methodology Very small, independently-built tool – not a maintained commercial product
Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate
PricingFree
Free planYes
CompanyJust Prompts
PlatformsWeb
Best forAI Infrastructure & Agent Tooling
Visits12
Last reviewedAug 2026
UpdatedAug 2026
Ask AI about Just Prompts ChatGPT Claude Perplexity

Overview

Just Prompts is a small, free tool for building and saving better AI prompts using Additive Prompting – a prompt-structuring framework that adds context and nuance in layers to improve the accuracy and coherence of AI-generated output, developed and publicly documented by prompt engineer Nick St. Pierre.

Additive Prompting isn’t a vague marketing claim – it’s a specific, testable methodology with public documentation of real results, including a case demonstrated for interior design and architecture photography reaching 90%-plus coherence to the original prompt in Midjourney across repeated tests. The tool packages that technique with simple prompt-saving functionality, letting users apply the same structured approach repeatedly rather than reconstructing it from scratch each time.

Just Prompts targets individuals working with AI image and text generation tools who want more consistent, controllable output. It’s a small, free, independently-built tool – no pricing is published, and none appears to apply.

Key features

  • Additive Prompting – a documented, layered prompt-structuring technique
  • Prompt saving for reuse
  • Demonstrated 90%+ output coherence in public testing
  • Works with LLMs and image generators like Midjourney and ChatGPT
  • Completely free

Screenshots & demo

Just Prompts screenshot 1

Pricing

Just Prompts offers a free plan, with paid upgrades for higher limits and more features.

  • Pricing modelFree
  • Starting priceFree
  • Free planYes
Visit Just Prompts

Pricing is provided as a guide. Check the official site for the latest plans.

Is Just Prompts expensive?

Just Prompts has no advertised paid tier. Among the 58 priced tools we list in AI Infrastructure & Agent Tooling, the median entry price is $29 a month.

55% of AI Infrastructure & Agent Tooling tools in the directory offer a free tier, and this is one of them.

Compared against every priced listing in AI Infrastructure & Agent Tooling, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

Pros

  • Built on a real, publicly documented and tested prompting methodology
  • Completely free with no account friction
  • Simple, focused tool – does one thing without unnecessary complexity

Cons

  • Very small, independently-built tool – not a maintained commercial product
  • Minimal feature set beyond the core prompting technique and saving
  • Results depend on correctly applying the Additive Prompting method, which has its own learning curve

How it compares

ToolRatingFreeFromBest known for
Just Prompts (this tool)3.0YesFreeAdditive Prompting – a documented, layered prompt-structuring technique
Ollama4.6YesFreeRun open models locally with a single command
Browserbase4.5Yes$20/moReal browser instances, not headless simulation
Hugging Face4.5Yes$9/moPublic hub hosting hundreds of thousands of open models, datasets, and Spaces

Alternatives to Just Prompts

4 tools our editors picked as direct alternatives to Just Prompts.

Our verdict

3.0 / 5 3.0

Just Prompts is a solid ai infrastructure & agent tooling tool, best known for additive Prompting – a documented, layered prompt-structuring technique. It offers a free plan.

What makes it different: Just Prompts stands out for additive Prompting – a documented, layered prompt-structuring technique.

How we score it
Overall 3.0
Value for money 4.7
Feature depth 4.9
Popularity 4.0
Best for ProfessionalsTeamsCreatorsCurious learners

Frequently asked questions

What is Just Prompts?
Just Prompts is an ai infrastructure & agent tooling tool listed in the Challenging Voice directory. A prompt-engineering tool built around Additive Prompting – a documented technique for layering context and nuance into a prompt, demonstrated at 90%+ output coherence in real testing with Midjourney and ChatGPT.
Is Just Prompts free?
Yes, Just Prompts offers a free plan. Paid plans unlock more features and higher usage limits.
What are the best Just Prompts alternatives?
Popular alternatives to Just Prompts include AudioFlux, PurpleBrain, and Caffe. Browse them all in the AI Infrastructure & Agent Tooling category.
Is Just Prompts any good?
Just Prompts scores 3.0 out of 5 based on our editorial review.

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