Student
USD $49.00 one-time
4 months of updates. The full editor - no plan is a cut-down build.
Windows 10 / 11 · offline · one-time purchase
A prompt engineering tool, not a prompt chat box
Prompt engineering is the work of deciding what a model should be told, in what order, and how you will know it worked. A chat box gives you one field for all of that. TPEE gives it a structure: thirteen named sections you fill in deliberately, a score that reads what you actually wrote, and an export in the dialect the tool you use will parse.
Compare the three plans 14-day free trial, no card
Code-signed installer for the release on sale · 14-day refund · Toptronic® Lifetime Warranty · prices in USD
What "engineering" means here
- The prompt is broken into thirteen sections - persona, instructions, context, technical specifications, format, audience, tone, data, examples, graphics, MCP servers, verification and agents - each with its own character count and quality lamp, so a section you skipped is visible rather than forgotten.
- A 0-100 score reads the prompt you wrote and names the one or two sections dragging it down. It is not a checklist of boxes ticked; the figure moves when the words move.
- The whole document is one file on your PC you can diff, version and keep. That is what makes a prompt an artefact you can improve rather than a message you lose.
It fits the tool you already use
- %(ides)d IDE profiles, %(clis)d CLI profiles and %(harnesses)d agent-harness profiles, each exporting in the shape that tool parses - including the XML formatters, where a prose preamble above the first tag would be a broken document rather than a helpful note.
- %(models)d priced models across %(providers)d providers, with context window, input and output rate, and a prompt-cost estimate before you send anything.
- %(lessons)d lessons and %(questions)d quiz questions in the built-in Learning Center, so the method is taught inside the tool instead of in a blog post.
Why it is a desktop program
- Prompts carry your client names, your specifications and your strategy. A web tool uploads all of it to somebody else's server and asks you to trust a policy page. TPEE writes to local JSON files beside the executable and makes no network call while you work.
- The only two outbound requests in the entire program are a release check you can switch off and a feedback form you have to press Send on yourself. You can confirm that with a firewall rule in five minutes.
- Windows 10 and Windows 11, 64-bit. No macOS or Linux build - a fact, not a roadmap.
The product, in figures
Every number below is read out of the catalogue the application ships, not typed by hand: 185 priced models across 23 providers, 50 IDE profiles, 63 CLI profiles and 50 agent-harness profiles, 94 lessons with 282 quiz questions, thirteen prompt sections and a 0-100 quality score.
Three plans, one payment
Starter Most chosen
USD $99.00 one-time
6 months of updates.
Professional
USD $299.00 one-time
12 months of updates. Also sold as a gift licence, delivered by email.
All three plans are the same application. Payment is taken by Stripe; the licence, receipt and download link arrive by email. Not ready to buy? The 14-day trial needs no card.
Questions a buyer actually asks
What is a prompt engineering tool?
A program for writing, structuring, scoring and exporting the instructions you give a large language model, as opposed to typing them into a chat box. TPEE does that on Windows, offline, with thirteen named prompt sections and a 0-100 quality score.
How is this different from a prompt library?
A library stores text you already wrote. TPEE scores what you wrote, shows which sections are empty or weak, and exports it in the format a specific IDE, CLI or agent harness parses. It also keeps a version history and automatic backups of every document.
Does TPEE call any AI model for me?
No. TPEE prepares the prompt; you send it to whichever model you choose in whichever application you already use. It ships a catalogue of 185 priced models so you can estimate the cost of a prompt before you send it, but it never contacts a provider.
Is there a free trial?
Yes - fourteen days, the full editor, no credit card and no account. Updates are not included during the trial; they begin with a licence.
What does it cost?
One-time: Student USD $49, Starter USD $99, Professional USD $299, including an updates window of 4, 6 or 12 months. After that the application keeps working forever and extending the window is optional.
Is the installer code-signed?
The release on sale is signed with an EV certificate issued to Toptronic Ltd, and its SHA-256 digest is published on the security page so you can check the file you downloaded.
What happens to my data?
Nothing leaves your PC: prompts, templates, projects and scores are local JSON files beside the application, with no account and no telemetry. This website measures visits with Google Analytics and a Google Ads tag, and only after you accept the choice it shows you at the bottom of the page; decline and nothing is loaded.
Start with the trial, or buy it now
Fourteen days, the whole editor, no card. If it is not the way you want to write prompts, uninstall it and nothing has been taken.