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3D painting software for Windows with NPR and PBR support
HarmoFlow for Windows
A Vulkan 1.2-compatible GPU and driver are required.
For the latest pricing, sales terms, and downloadable files,
visit the product page on BOOTH.
System requirements (provisional guidance)
CPU, memory and VRAM figures are estimates based on the implementation. Testing on minimum-spec hardware is not yet complete, so these are not confirmed minimum requirements.
| Component | Minimum guidance | Recommended configuration |
|---|---|---|
| OS | Windows 10 / 11, 64-bit | Windows 11, 64-bit |
| CPU | 4 cores / 8 threads or more | 6 cores / 12 threads or more |
| Memory | 16GB | 32GB or more |
| GPU | Vulkan 1.2 support, 4GB VRAM or more | Vulkan 1.2 support, 8GB VRAM or more |
| Storage | SSD with 10GB free space or more | SSD with 20GB free space or more |
| Intended workload | Around 1024px, with a small number of texture sets | Typical work at around 2048px |
Required performance, memory and VRAM depend on model size, texture resolution and layer count.
- For 4K resolution or many texture sets, 12GB VRAM or more is recommended.
- Additional free space is required for projects, caches and exports.
- A display resolution of 1920×1080 or higher is recommended.
CPU and GPU examples (provisional)
All examples refer to desktop versions. Product names indicate approximate performance; this is not a list of hardware verified to run HarmoFlow.
| Type | Minimum example (provisional) | Recommended example (provisional) |
|---|---|---|
| CPU: Intel | Core i3-10100 | Core i5-12400 |
| CPU: AMD | Ryzen 3 3100 | Ryzen 5 5600 |
| GPU: NVIDIA | GeForce GTX 1650, 4GB | GeForce RTX 3060, 12GB version |
| GPU: AMD | Radeon RX 5500 XT, 4GB version | Radeon RX 6600, 8GB |
The listed CPUs and GPUs are performance examples. A Vulkan 1.2-compatible GPU driver is required.
The confirmed requirements are Windows and a Vulkan 1.2-compatible GPU and driver.
Interface languagesJapanese · English · Simplified Chinese · Korean
New to HarmoFlow?
Follow the steps from installation, first launch, and pre-update backups through your first painting.
Getting started guideBefore you buy
Please refer to the HarmoFlow Software License Agreement for the terms of use.
Read the license agreementPurchase FAQ
A quick guide to compatibility, the Trial, and usage conditions. See the BOOTH product page for current pricing and downloads, and the software license agreement for the governing terms.
Which computers are supported?
HarmoFlow is Windows-only and requires a Vulkan 1.2-compatible GPU and driver. CPU, RAM, and VRAM figures are provisional guidance, not a guarantee for every configuration. Read the requirements table and its notes, then use the Trial to check your own models and intended workload.
How do the Trial and Full editions differ?
The Trial supports editing and saving projects, but texture export is disabled. Trial-saved projects can be opened in the Full edition. Full and Trial install as separate apps and keep separate preferences and material caches. Follow installation and first launch to get started.
Do I need a constant internet connection?
You need a connection to download the app and when first using downloadable image materials. Downloaded materials can be used offline; applied images are also copied into the project. Browsing the catalog, using procedural materials, and using manually imported images do not require a material download. See material downloads and offline use.
Who owns the textures and images I create?
Section 3 of the EULA states that you retain rights to the textures, images, project data, and exports you create with HarmoFlow. If they contain third-party works or licensed assets, you must also follow those assets' conditions. Buying the app does not itself grant rights to models or materials you import.
Can I sell works made with the bundled CC0 materials?
The bundled CC0 materials can be used commercially, including in works you sell. See the CC0 deed. Trademark, publicity, privacy, and similar rights may still need separate consideration.
Other materials you import remain subject to their own licenses. HarmoFlow itself is governed separately by the software license agreement, rather than the materials' CC0 terms.
Can I use one license on multiple PCs?
As a rule, each person needs one license. The same purchaser may use HarmoFlow on multiple PCs.
Are team licenses available?
Team licenses are currently under consideration. If you're interested, contact the publisher via the messaging feature (「メッセージ」 in Japanese) on the Mametaro-an shop to discuss your needs.
Can I give the app or installer to someone else?
The EULA prohibits redistribution, lending, and similar sharing of the software and installer. For the bundled CC0 materials, see material usage conditions. One license is generally intended for the purchaser alone, and the right to use the software is non-transferable. Ask the publisher before purchasing if your intended use needs clarification.
What about updates and support?
Since Ver.0.1.1, HarmoFlow supports automatic update checks and notifications. See automatic update notifications for how to use the notification icon.
Check the BOOTH product page for current release information and sales conditions. Section 5 of the EULA does not oblige the publisher to provide updates, new features, support, or an operation guarantee unless separately stated. Before updating, follow the backup and update steps. Contact the publisher through the HarmoFlow BOOTH product inquiry option or the messaging feature (「メッセージ」 in Japanese) on the Mametaro-an shop.