CreAtIve Mind Lab All tools by Creative Mind Lab
100% local · AES-256 encrypted · no account

The digital teacher planner that handles your entire school day.

Calendar, timetable, weekly plan, classes, grades, marking, seating charts and handwriting — all in one calm interface. Your data stays 100% on your own device.

Start free now → Explore with a sample class
No sign-upWorks offlineCore free foreverOne-time purchase, no subscriptionBuilt by a teacher
Good news: The app is already available in English — just click “Start free”. The translation is brand new, so if something reads oddly, I would be glad to hear about it.

One workspace instead of five separate tools

The free core is a complete digital teacher planner in its own right. Five add-on modules extend it — each a fair one-time purchase.

Calendar & school year Free

Day, week, month and the full school year. Holidays, A/B weeks, recurring events, ICS import/export for Google, Outlook and iCloud.

Timetable & weekly plan Free

A freely configurable period grid with breaks and automatic cascading — plus a weekly plan just like a paper planner: click in, start typing, done.

Tasks, notes & search Free

Recurring tasks, pinnable notes and a global search (Ctrl+K) across everything — students, events, teaching units and materials.

Grades Module

Grades with tendencies and quarter steps or 0–15 points, weighted categories, live averages, marking management and CSV export.

Classes Plus Module

Seating charts with desk layouts (pairs, U-shape, groups), teacher/student view and drag & drop, student photos, a name-learning game and a group randomiser.

Lessons & materials Module

Teaching units that pull their own dates straight from the timetable — and a materials register that never loses anything again.

Checklists & team Module

Ready-made checklists for parents’ evenings, reports, school trips and the end of the year — for every teacher, not just form tutors. Plus colleague packages for passing on classes, teaching units and checklists.

Handwriting & stylus Module

Write straight into your weekly plan and notes with an Apple Pencil or any stylus: pen, highlighter, eraser, straight lines. Trying it out is always free.

Security & backups Always free

Password lock with AES-256, recovery key, auto-backup to a stick or cloud folder. Data protection never sits behind a paywall here.

Student data never leaves your browser. Not once.

Teacher Workspace is a local app: no cloud, no account, no analytics, no external scripts. Its only network request is the manual update check — triggered by you, at the press of a button. Which is exactly why:

No DPA requiredSince no student data ever reaches Creative Mind Lab, there is no processing on your behalf — your school needs no data processing agreement for it. One piece of paperwork less.
AES-256 on your deviceAn optional password lock encrypts everything on disk — including a recovery key for emergencies and encrypted backups.
Full controlJSON backups and automatic saving to a USB stick or your own cloud folder (your school's Nextcloud, for example). Your data, your storage location.
Don’t take my word for it — check it. It takes a minute.

The simplest test needs no technical knowledge at all: open Teacher Workspace, then switch off your Wi-Fi — and carry on working. Create a class, fill the timetable, enter events, everything. Nothing is missing, because nothing is loaded and nothing is sent. Exactly three things need a connection at all, and you trigger all three yourself: the “Check for updates” button, the holiday data refresh and the newsletter sign-up.

I want to see it precisely — how to do it on Windows, Mac and Linux

And for anyone who wants to see it in black and white: every browser has a panel that logs each connection. Chrome and Edge: menu (three dots) → More tools → Developer tools. Firefox: menu (three lines) → More tools → Web Developer Tools. Safari on Mac: once enable Safari → Settings → Advanced → “Show features for web developers”, then Develop → Show Web Inspector. Choose the “Network” tab and carry on working: the list stays empty. (Shortcuts: F12 on Windows and Linux, ⌥ + ⌘ + I on Mac, where F12 is taken by the system.)

And a second commitment: this tool grades no one. It calculates, sorts and makes things visible — the judgement stays with you.

And a third, because the question comes up: this tool was developed with AI — it runs without any. No interface, no language model, nothing sent anywhere. The five reasons are on the tools overview (in German).

Up and running in two minutes

Open or download

Start straight in your browser — or download the file and open it locally with a double-click. On a PC, Mac or iPad. No installation, no sign-up, works offline too.

Set up

Pick your school year, a holiday preset and your period grid — the guided tour shows you everything that matters in about a minute.

Get going

Paste in your classes (one list, one click), fill your timetable — and unlock individual modules with a code whenever you need them.

You get a file, not just access.

The quickest way to start is online: open the link and go, always the current version. But you can download Teacher Workspace as a file at any time and keep it — it is then yours, independent of this website.

Start right awayThe link opens the app straight in your browser — nothing to install, nothing to set up, and you always have the current version.
Download and keepThe whole of Teacher Workspace is a single file. Put it on your device, a USB stick or your own cloud folder — it keeps running there, offline.
No account, no expiry dateA one-off purchase instead of a subscription. The unlock code is checked offline and works again after you switch devices.
Share within your schoolYou may make the file available to your colleagues on your school's internal network. Publishing it on publicly accessible websites or passing it on for payment is not permitted.

Worth knowing: the online version and the downloaded file store their data separately. Whatever you entered online is not automatically present in the file. To move across, export a backup in one and import it in the other.

In both cases your content stays on your device. When you open the online version, my server only sees the page request itself, as on any website. Once you have downloaded the file there is no contact with me at all — unless you trigger the update check by hand.

And the marking? That’s what Korrigato is for.

The Workspace runs your school year. For the pile of papers waiting on your desk there is a second tool from the same workshop — with a door between the two.

A marking companion, not a markerMarks made on the first read instead of a second pass. Rubrics, points and grade scales that do the arithmetic while you judge. Feedback sheets for the whole pile at one click. Korrigato never reads the work itself — that stays with you.
Why it belongs hereClass lists come in from the Workspace, finished grades go back into the grade book — each one with the right student, without typing a single line. And the same build: one file, no account, no cloud, no data-processing agreement. If you trust the Workspace for those reasons, you needn’t start over here.
Why not an AI markerAn AI saves exactly the part you have to do anyway: the reading. The hours disappear elsewhere — the second pass, writing the same sentences again, the arithmetic, the copying into the grade book. That is where Korrigato works. And the grade stays a decision you stand behind: rubric, weights and a written rationale instead of “the model said C−”.
Take a look at Korrigato Free tier, permanently free

Fair pricing. Pay once, use it for good.

No subscription, no expiry date: modules you buy keep working indefinitely — across school years too. Later editions are entirely optional upgrades.

Until 31 October 2026: the Complete Edition comes with Korrigato for free — the marking companion otherwise priced at €14.90 (€19.90 from November), unlocked with the same code. See Korrigato →

Core

0 €free forever
  • Dashboard, calendar & school-year view
  • Timetable (A/B weeks) & weekly plan
  • Tasks, notes, global search
  • Classes & student lists (core)
  • Encryption, backups & auto-save
  • Receiving colleague packages · dictation
  • The 5 add-on modules below are not included
Start free
Available in English

Complete — 2026/27 edition

34,90 €44,90 €one-time purchase · no subscription · all 5 modules
  • Everything in the core, plus:
12,90 € GradesGrades, averages, marking, CSV
12,90 € Classes PlusSeating charts, photos, name game, groups
12,90 € Lessons & materialsTeaching units + materials register
12,90 € Checklists & teamChecklists, creating packages
12,90 € Handwriting & stylusInk editor for Pencil & stylus
All 5 togethersaves 29,60 € compared with buying separately
Buy on the German page →

The app runs in English; the checkout itself is currently available in German only. Activation code by email, one-time purchase, no subscription.

Introductory price until 30 September 2026 — €39.90 thereafter, €44.90 from December

Frequently asked questions

Can I try it without typing in all my students’ names first?

Yes. On first start you load a sample class and immediately see a filled dashboard: timetable with A/B weeks, events, tasks, classes, exams — without typing a single entry. Five minutes are enough to tell whether the handling suits you. You remove the sample data later with one click (Settings → Remove sample data), before you set up your real classes.

Where is my data stored — and what can Creative Mind Lab see?

Everything (classes, grades, photos, handwriting …) stays in your device’s browser storage, AES-256 encrypted if you wish. There is no server receiving student data — I cannot see your data at all. The app’s only network access is the manual update check.

Does my school need a data processing agreement (DPA)?

No. Since no student data is transmitted, there is no processing within the meaning of the GDPR — there is simply nothing that could be processed. For official use: follow the rules of your region; the built-in privacy guide helps with secure storage and backups.

Is this a subscription? Does anything expire?

No. Every module and the complete edition are one-time purchases and run indefinitely — across school years too. Once a year a new edition appears with the coming year's additions, as an optional discounted upgrade.

Can I download the app and keep it permanently?

Yes. The whole of Teacher Workspace is a single file. Download it and put it on your device, a USB stick or your own cloud folder — a double-click is enough and the app keeps running offline, independently of this website. You get it as a small package: the app, an empty “Sicherungen” folder for your backups and the guides for Mac and Windows — unpack it, drag it to a permanent place, done. Nothing installs itself. Your unlock code works just the same in the downloaded file, since it is checked offline anyway. Just note: the online version and the file store their data separately — to move across, export a backup in one and import it in the other. Download the package (app + guide)

How does activation work?

After your purchase you immediately receive an activation code by email. You paste it into the app (Settings → Edition & Activation) — verification runs entirely offline via a cryptographic signature. No account, no activation servers, and it still works after you change devices.

Does Teacher Workspace run on an iPad?

Yes — including Apple Pencil support in the handwriting module (pressure, palm rejection, highlighter, eraser). Safari on Mac, Chrome, Edge and Firefox are supported too.

What happens when I switch devices?

Export a backup (encrypted if you like), import it on the new device, re-enter the activation code from your purchase email — done. Automatic backups to a cloud folder (your school's Nextcloud, for instance) make the move even easier.

Can I work together with colleagues?

Yes — via colleague packages: pass on classes, teaching units and checklists as a file, password-protected if you wish. Receiving is free for everyone; creating packages is part of the “Checklists & team” module.

What languages is the app available in?

German, English, French, Spanish, Czech and Slovak. You can switch at any time using the globe icon in the app's header. The non-German translations are new — if a term does not match what teachers in your country actually say, please tell me; corrections are quick to apply.

Start free

Feedback & updates

The English version is brand new. Tell me what should be worded differently — and I will let you know about improvements and new features. No spam, unsubscribe at any time (double opt-in).

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