Student
USD $49.00 one-time
4 months of updates. The full editor - no plan is a cut-down build.
Windows 10 / 11 · one-time purchase · no subscription
A prompt editor for Windows that works offline
TPEE is a desktop prompt engineering editor. It breaks a prompt into thirteen named sections, scores it from 0 to 100 against the thing you are actually asking for, and exports it in the shape your IDE, CLI or agent harness expects. It runs on your PC, it never calls out, and you buy it once.
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 you get, plainly
- 13 prompt sections - persona, instructions, context, technical specifications, format, audience, tone, data, examples, graphics, MCP servers, verification and agents. Each has its own quality lamp and character count.
- A 0-100 score that reads the prompt you wrote - not a checklist of boxes ticked - plus per-section advice on the weakest part.
- 50 IDE profiles, 63 CLI profiles and 50 agent-harness profiles, each exporting in the dialect that tool parses, not a generic markdown dump.
- 185 priced models across 23 providers - context window, input and output rate, and a prompt-cost estimate before you send anything.
- 94 lessons and 282 quiz questions in the built-in Learning Center, so the method is taught in the application rather than in a blog post.
- A prompt library, version history and automatic backups held as ordinary JSON files you can read, copy and keep.
Why an offline editor is a different product
Most prompt tools are a website with a login. That is a fine shape for a team that wants shared templates and does not mind a subscription. It is the wrong shape if what you are writing is the part of your work that is worth keeping.
- Nothing is uploaded. Your prompts, your client names, your specifications and your drafts stay in files on your machine. There is no account to create and no service to be locked out of.
- It works on a plane, in a plant, behind a firewall. No connection, no spinner, no rate limit, no outage on the vendor's side to interrupt your afternoon.
- You can check the claim. Block the executable in your firewall and use it for a week. The two calls the program makes are a release check you can untick and a feedback form you must press Send on.
- You own the copy you paid for. One-time price, licence on your machine, updates included for the window you chose, and the application keeps working after it ends.
How it fits an afternoon
- Draft. Type into the thirteen sections - or paste a prompt you already have and let the editor show you which sections are empty.
- Score. Read the 0-100 figure and the one or two sections dragging it down. Fix those, not the whole document.
- Export. Choose your tool and copy. The export carries the same text the Copy button does, in the form that tool actually parses.
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 TPEE?
TPEE is a Windows desktop application for writing and scoring prompts for large language models. It breaks a prompt into thirteen named sections, scores it from 0 to 100 and exports it for whichever IDE, CLI or agent harness you use. It runs offline.
Does it work without an internet connection?
Yes, entirely. TPEE makes no network call while you work: the only two outbound requests in the whole program are a release check you can switch off and a feedback form you have to press Send on yourself. You can confirm it with a firewall rule.
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. Each includes an updates window of 4, 6 or 12 months. After that the app keeps working forever; extending the updates window is optional.
Which Windows versions?
Windows 10 and Windows 11, 64-bit. There is no macOS or Linux build, and that is a fact rather than a roadmap.
Does it run prompts for me?
No. TPEE prepares the prompt - structure, quality, format, the right export shape for your tool. You still send it to whichever model you choose, in whichever application you already use.
Is the installer signed?
The release on sale is code-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. There is no account, no telemetry and no analytics on this website either.
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.