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Your Desktop.
Your Domain.

Switch your modes to match your needs. KASTLR follows your preference and enhances your experience.

Get Early Access → See how it works
Coming soon to the
Microsoft Store
3
Preset Modes
Free
Always, no catch
Win 11
Native Only
PLAY
Mode active
KASTLR — Desktop Control
⊞Dashboard
◉Modes
🖼Marketplace
⊟Loadouts
⊹Optimiser
⚙Account
Your Modes
Work
Focus optimised
Play
Maximum output
Create
Your space
Marketplace Picks
🎨
Marketplace wallpaper applied
Crimson Abyss — Category: Dark Fantasy
KASTLR

One click. Total transformation.

Preset environments that control your wallpaper, taskbar colour, system performance, and notifications. All switching together in one click. With further customization options for you to explore.

💼

Work Mode

Muted tones, notifications on. System tuned for sustained work performance.

Focus wallpaper Notifications on Balanced power plan Muted accent
🎮

Play Mode

Limited background apps, maxed power plan, Game mode on. Nothing between you and the game.

Apps suspended High performance Energetic accent
🎨

Create Mode

Maxed power plan, GPU Scheduling and hardware acceleration. Your creative desktop, fully optimised.

Notifications off GPU enhanced Creative accent
Work Play Create 1 click to switch
Work Mode — Active
Notifications On
Balanced power plan
Cyan accent active
The Marketplace

Art built for
your desktop.

Exclusive desktop art from independent artists. Free accounts enjoy 10 Premium Wallpapers for Free. Upgrade and receive unlimited access.

Dark Series
Dark Series
Dark Series
Dark Series
Dark Series
Dark Series
Dark Series
Dark Series
Get Early Access → Explore Premium
10
Free Wallpapers for Every User
∞
Unlimited on Premium
5,000+
Brands to Redeem Your Points at
Feature Set

Everything your
desktop should be.

Everything your Windows 11 desktop should be. Built around how you work, play and create.

⊞

Preset Modes

Work, Play, Create. Each mode is a complete desktop environment — wallpaper, accent colour, performance, and notifications switching together.

Free
🖼

The Marketplace

Browse curated desktop wallpapers from independent artists. With trade options for Premium users.

Free / Premium
🎨

Taskbar Accent Control

Full RGB control over your taskbar accent colour. Each mode carries its own colour. No manual switching, KASTLR handles it.

Free
⇅

Wallpaper Carousel

Set a folder, set an interval. KASTLR automatically rotates your collection on your schedule. Per-mode folders supported.

Free
⊟

Loadout System

Save your entire desktop configuration as a named loadout. Restore any setup instantly and share it. Premium users get unlimited slots.

Premium
☁

Cloud Sync

Your modes, loadouts, and settings follow you across every Windows device you own. Switch machines without losing touch.

Premium
⚡

Windows Optimizer

Reduce startup bloat, manage background apps, tune system performance. All safe, all reversible. Takes under a minute.

Free
⏱

Mode Scheduling

Automatically switch modes based on time of day. Work hours trigger Work mode. Evening triggers Create or Play. Set once, KASTLR does the rest.

Premium
⌨

Hotkeys

Assign global keyboard shortcuts to switch modes, apply wallpapers, or trigger loadouts, without ever opening the app.

Premium
SpotifySpotify
AppleApple
SteamSteam
AmazonAmazon
NetflixNetflix
PlayStationPlayStation
XboxXbox
UberUber
Google PlayGoogle Play
DiscordDiscord
TwitchTwitch
PayPalPayPal
SpotifySpotify
AppleApple
SteamSteam
AmazonAmazon
NetflixNetflix
PlayStationPlayStation
Xbox
UberUber
Google PlayGoogle Play
DiscordDiscord
TwitchTwitch
PayPalPayPal
Rewards Economy

Support Artists.
Earn Value Back.

KASTLR runs on a points economy called KP. Buy wallpapers, mode kits, and limited drops from independent artists.

Buy a limited drop. Hold it. Sell when the price rises. Redeem your KP for vouchers from over 5,000 global brands.

Example: How it plays out
Buy Value bundle R99 → 1,150 KP
Purchase limited drop −1,000 KP
Resell at 2× price +1,700 KP
Net position 1,950 KP from R99 ↑

Art sales are subject to a pre-defined market cap. Sell within the cap and walk away with more than you started with.

Get Early Access →
Point Bundles
Starter R29 330 KP
Standard R49 559 KP
Value RECOMMENDED R99 1,150 KP
Pro R199 2,500 KP
2,000
KP minimum to redeem
~R180 value
48hr
Voucher delivery window
once weekly

KP is non-transferable and non-refundable once spent. Vouchers delivered digitally to your verified email. Available in 30+ countries.

How It Works

Up & Running in Minutes.

01

Download KASTLR

Install in under a minute. A lightweight native Windows 11 application. No account required to start. Download and run. That's it.

02

Choose Your Mode

The setup wizard walks you through Work, Play, and Create. Select your mode. Your desktop transforms immediately. You can change this any time.

03

Make it Yours

Choose your background, browse the Marketplace, tweak your accent colours. Free forever. Unlock Premium when you're ready for more.

Pricing

Start Free. Upgrade when Ready.

Free Forever. Unlock Premium when You're Ready. No credit card required to start.

Free
R 0 / Forever

Free forever. Everything you need to personalise your desktop. No account required to start.

  • 3 preset modes: Work, Play, Create
  • Local wallpaper selection per Mode
  • Wallpaper Carousel (folder + interval)
  • Taskbar accent colour per Mode
  • Light / Dark mode toggle
  • 1 Saved Loadout slot
  • 10 Free Wallpapers (lifetime)
  • Basic Windows Optimizer
Get Early Access to new Features
Most Popular
Premium
R 29 / month

The full power of KASTLR. Unlimited access to all features and unlock Trade.

  • Everything in Free, plus:
  • Unlimited Custom Modes
  • Mode Scheduling: Time-based switching
  • Unlimited Loadout Slots
  • Cloud Sync across all Your Windows Devices
  • Full Marketplace Catalogue
  • Advanced Wallpaper Carousel (Google / OneDrive access)
  • Multi-Monitor Wallpaper Control
  • Global Hotkey Shortcuts
  • Artist exclusive drops & early access
  • TradePost access and full Trade Capability
Get Early Access →

Cancel any time  ·  Billed monthly  ·  Payments processed via PayFast in ZAR currency

QuarrelsomeKiwi
44 pieces · Dark, Fantasy, Psychedelic
QuarrelsomeKiwi
Dark Series — exclusively on KASTLR
QuarrelsomeKiwi
Dark Series — exclusively on KASTLR
Your studio here
Apply as a creator →
For Artists & Creators

Great Art deserves a Great Stage.

KASTLR. A Home for Independent Artists. Exclusive Desktop art you won't find anywhere else.

Limited Drops. Real Artists. Great Rewards. Submit Your Work and reach a Desktop Audience seeking your Unique Style.

🎯
75% of every sale is credited to Your KP balance
🎁
Redeem KP for vouchers: Steam, Amazon, Netflix, Spotify and 5,000+ more
🔒
SHA-256 verified at upload: Your work is protected
📊
Full earnings dashboard, submission tracking, and approval status
Apply as a creator →
Early Access

Free forever.
Unlock Premium
when You're ready.

KASTLR is in active development. Drop your email and we'll notify you the moment we go live.

✓ You're on the list. We'll be in touch.

Windows 11 only · Free to download · No spam, ever