JHR Tech Ltd
Monster Maker icon

Monster Maker

A picture maker for children. They build a monster by tapping buttons, choose an art style and a "drawing machine", and an AI image model draws it. Then they can change it, name it, and put it on the family Monster Wall. Daily credit budgets and kid-safe prompts keep it in check, and a grown-ups page keeps an eye on everything.

Private family project · not publicly accessible

In pictures

What it looks like

Screenshots on a tablet and a phone. They were taken on a demo copy with made-up profiles (Sam, Alex and Robin) and no real names; the monsters are real results. Tap any screenshot to see it full size.

The opening screen asking who's making monsters today, with a card for each child showing their power left
Who's making monsters today? Each child taps their own card, which shows how much power they have left.
Building a new monster: nine kinds of monster, dragon chosen, and an info bubble with an example picture of a dragon
Building a monster. Pick a kind, then a type; the bubble explains it, with an example picture.
The surprise details option, the idea summary and four drawing machines with their costs
Pick a drawing machine. Four AI models, each with its own cost in power.
A purple dragon monster with a crown named Sock Muncher, and buttons for changes like make it a baby or add sparkles
Change it! Tap changes like "make it a baby" or type your own, and give the monster a name.
The child's own monster collection under the exact prompt that was sent to the drawing machine
My monsters. Every monster a child has made, plus exactly what was asked of the drawing machine.
The Monster Wall: everyone's monsters in a grid with filters for maker, kind, type, art style, new or changed, and order
The Monster Wall. Everyone's monsters, with filters.
The grown-ups page with the account balance, renewal date and the prompt lab
Grown-ups page. Account balance, renewal date and the prompt lab. (The demo shows a pretend balance.)
The monster makers table with each child's usage today, totals, a bonus credits control and a kid-safe toggle
Monster makers. Each child's usage, bonus credits and kid-safe setting.
The blocked words list with a sentence tester, and recent monsters showing each child's idea and what was sent
Blocked words and recent monsters. An editable word list with a tester, and a log of every request. (Demo list shown.)
Monster Maker on a phone: a child's page with power meters and their latest monster

On a phone too

The same pages rearrange themselves for a phone, so any tablet, phone or laptop on the home Wi-Fi can be used to make monsters.

Monsters made

Some of the results

Real pictures made with Monster Maker, across the different art styles and drawing machines.

Making a monster

Buttons instead of typing

Young children don't need to spell anything. Each step is a row of big buttons with an emoji, and the idea builds up in a sentence underneath as they go.

Nine kinds of monster

Classic monsters, animals, mythical creatures, Halloween, dinosaurs, sea creatures, creepy crawlies, space and robots, and food monsters, each with its own list of types (a dragon, a kraken, a T. rex, a taco...). Or type your own: a cup, a cactus, a teapot.

What is a griffin?

Tricky words come with an info bubble that explains them in a sentence, and many have an example picture the child can tap to see bigger.

Looks, colour, eyes and extras

Choose the colour and how many eyes, then pick from about fifty "cool extras" in three groups:

  • Body bits: wings, tentacles, two heads, a trunk, a shell...
  • Things to wear and carry: a crown, headphones, a skateboard...
  • Magic: fire breath, sparkles, a tiny friend on its shoulder...

Six art styles

Cartoon, storybook (watercolour and coloured pencil), 3D animated film, modelling clay, realistic creature design, or a real-looking photograph.

A personality

"What's it like?" adds a mood (cheeky, shy, grumpy, brave...), and an optional "Anything else?" box takes a sentence such as "it loves eating socks".

Surprise details

An optional dice adds a random body shape, pose, surface and colours, so two children choosing the same buttons still get very different monsters. It skips anything the child has already chosen.

Drawing machines

Four machines, four prices

Each "drawing machine" is a different AI image model. Better pictures cost more power, so children learn to choose.

MachineWhat it's likeNew monsterChange
✏️ Quick DoodleFast and cheap33
🖍️ Super SketchBetter detail66
🎨 Mega MasterThe best pictures99
🧙 Wild WizardA different art style912

Costs are in credits, which come from the family's AI image account.

Changing it

Keep going with the same monster

"Change it!" sends the current picture back to the drawing machine with an instruction, keeping the same character and art style unless the change asks for a new one.

A blue cartoon creature with antennae, running
→make it a robot version, holding an ice cream
The same creature as a golden robot on a skateboard, holding an ice cream
→make it bigger and scarier
The golden robot again, bigger and spikier
A storybook zombie hydra
→make it a baby, make it rainbow
The hydra as a rainbow baby in the same storybook style
A broccoli creature with a cape and glowing eyes
→make it bigger and scarier
The broccoli creature, bigger and scarier

Ready-made changes

Add wings or a hat, make it cuter, a baby, a robot, fluffier, laughing, or flying; switch it to a cartoon, a photo or clay; or pick a new colour. Or type the change in your own words.

Names and a collection

Children can name each monster. Everything they make is kept in "My monsters", and tapping one brings it back to work on. They can remove their own monsters too, and a grown-up can bring them back.

No secrets

Under each picture, "Exactly what we asked the drawing machine" shows the full prompt that was sent, which machine was used and what it cost.

Monster Wall

Everyone's monsters in one place

Filters that never come up empty

Filter by who made it, the kind of monster, the type, the art style, new or changed, and newest or oldest first. Each option shows how many monsters it has, so a choice never leads to an empty wall.

Pages and a big view

The wall shows 24 monsters a page and opens any picture full screen.

Credits

Limited by power, not by the number of pictures

Every picture costs real credits, so each child gets two daily budgets, shown as power meters at the top of their page.

Two daily budgets

  • ✨ New monster power 18 a day
  • 🪄 Change power 12 a day

Both reset at midnight. A child can spend them on lots of quick doodles or one or two of the best pictures.

Enforced by the server

The limits are checked on the server, so refreshing the page or switching to another tablet doesn't get round them. Each child can have one monster in progress at a time.

Fair when things go wrong

Credits are set aside when a picture starts and handed back if it fails. A grown-up can give bonus power for the day.

Safety

Made for children

Kid-safe prompts

Every request is wrapped in the chosen art style plus "friendly, not frightening, no blood, no gore", a plain white background and no text. A grown-up can turn the kid-safe wording off for a grown-up's profile.

Blocked words

Every idea, button choice and change is checked against a list of blocked words before anything is sent, and nothing is spent if it's blocked. It catches endings too ("gun" blocks "guns" but not "gunk"). Grown-ups edit the list and can test a sentence against it.

Keys stay private

The AI account key stays on the home computer and is never sent to the children's devices.

Grown-ups

A PIN-protected control room

The account at a glance

The live credit balance, the day the plan renews and how much the children have used since then, plus credits used today and all time.

Monster makers

Add or remove children with a name, emoji and colour. See each child's usage today, number of monsters and all-time credits, give bonus power, and set kid-safe prompts.

Recent monsters

Every request with the child's idea, the full prompt that was sent, the machine and the cost. Delete a picture, or restore one a child removed.

Prompt lab

For grown-ups to experiment: send an exact prompt with no wrapper, or start from any child's request and change it. Lab pictures stay off the children's pages and the wall.

Under the hood

Small and home-made

No dependencies

A single Node.js server with no npm packages, and plain HTML, CSS and JavaScript pages.

Runs at home

It runs on a home computer and starts when the computer does, with a watchdog that restarts it if it ever stops. Devices on the home Wi-Fi reach it by the computer's name.

AI pictures by Meshy

New monsters use Meshy's text-to-image models and changes use image-to-image, with progress shown while the egg hatches. Every result is also archived with its prompt.

A practice mode

A mock mode runs the whole app with pretend pictures and its own separate data, so changes can be tried without spending a credit.

Not publicly accessible

Monster Maker is a private family project that runs on a home network, so there is no public version to try.

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