The Cross-Platform TouchGFX Alternative for Embedded GUI

TouchGFX works well on STM32 — but when your hardware roadmap moves beyond STM32, or when MISRA C compliance becomes a requirement, Sparklet is the embedded GUI framework engineering teams move to.

Get Free Evaluation Contact Sales

What Is the Best TouchGFX Alternative for Embedded GUI Development?

A TouchGFX alternative is an embedded GUI framework that provides the same visual design, widget rendering, and animation capabilities as TouchGFX — without TouchGFX's core constraints: STM32 platform dependency, C++ language requirement, and absence of MISRA C compliance. Engineers search for a TouchGFX alternative when a hardware change, a safety requirement, or a multi-vendor product strategy makes TouchGFX's STM32-only model unworkable. Sparklet is written in pure C, is MISRA C compliant, runs on nine hardware platforms, and ships with a professional no-code design tool — making it the leading TouchGFX alternative for teams building beyond STM32.

This page covers the three most common scenarios driving teams to seek a TouchGFX alternative, a side-by-side comparison, honest guidance on when TouchGFX remains appropriate, and a practical migration path. For a deeper feature-by-feature breakdown, see Sparklet vs TouchGFX. For platform coverage details, see supported platforms.

The three constraints that most frequently trigger a TouchGFX alternative search are STM32-only silicon lock-in (a hardware change forces a full GUI rewrite), C++ runtime overhead (incompatible with MISRA C and adds Flash cost on MCUs below 512 KB), and design tool limitations that worsen on non-STM32 targets where CubeMX integration doesn't apply.

TouchGFX vs Sparklet: Side-by-Side Comparison

CriteriaSparkletTouchGFX
LanguagePure CC++
License ModelRoyalty-free (per seat)Free on STM32 only
MISRA C CompliantFull complianceNot compliant (C++)
Platform Support9+ silicon vendorsSTM32 only (officially)
Hardware AccelerationDMA2D, D/AVE2D, Mali GPU, PXPDMA2D (STM32 only)
Visual Design ToolFlint (full WYSIWYG)TouchGFX Designer
State Machine EditorUML-based in FlintLimited
Figma ImportSupported in FlintNot available
Bare-Metal SupportYesYes
Professional SupportDirect-to-engineer SLAST ecosystem
Royalty-Free at VolumeYes — all platformsSTM32 only
C++ Runtime OverheadZero (pure C)Present — Flash cost

Three Areas Where Sparklet Outperforms TouchGFX

Platform portability, language model, and safety compliance — the three differentiators that most commonly drive migration from TouchGFX to Sparklet.

Silicon-Agnostic vs STM32-Only

TouchGFX is designed and optimised exclusively for STM32 microcontrollers. It leverages STM32's DMA2D peripheral for hardware acceleration, is validated against ST's evaluation kits, and is distributed through STM32CubeMX. Porting TouchGFX to Renesas RA or RH850, NXP i.MX RT, or Infineon TRAVEO T2G is not a supported pathway — it requires re-implementing hardware acceleration drivers without vendor support, and risks the loss of the performance advantages that made TouchGFX attractive in the first place.

Sparklet is silicon-agnostic by design. The same UI codebase, compiled against Sparklet's HAL layer, runs on Renesas, NXP, STM32, Infineon, Nuvoton, and Rockchip with hardware-accelerated rendering on each platform. A hardware change requires a HAL swap, not a GUI framework rewrite — protecting months of UI design and development work.

  • Renesas RH850: D/AVE2D hardware accelerator natively integrated for automotive HMI
  • NXP i.MX RT1170: 2D GPU acceleration and PXP pixel pipeline fully integrated
  • Renesas RA8D1: Mali-Limav GPU integration for mid-range MPU performance
  • STM32: DMA2D and Chrom-ART supported — same acceleration as TouchGFX
  • Infineon TRAVEO T2G: automotive-grade platform with dedicated HMI rendering support

Why Teams Switch from TouchGFX to Sparklet

Features Image

Migrating from TouchGFX to Sparklet

A four-step process covering screen rebuild, API substitution, HAL swap, and build system update. Validate on the Windows PC simulator before running on target hardware.
Step 1

Step 1 — Screen Rebuild in Flint Designer

Recreate existing TouchGFX screen designs in Flint by reconstructing layouts visually. Flint's WYSIWYG environment makes this faster than it sounds — most screens can be rebuilt and connected to data in hours rather than days. The visual recreation approach also produces a sustainable Flint project file, unlike TouchGFX's C++ generated output which is difficult to maintain outside the Designer tool.

Step 2

Step 2 — API Substitution: C++ Widget Model → Sparklet C API

Map TouchGFX's C++ widget model to Sparklet's C API. The conceptual widget taxonomy is similar — both frameworks have buttons, labels, images, charts, meters — with different calling conventions. Both frameworks follow an event-driven model where widget interactions fire callbacks; only signatures differ, not the pattern. Engineers with TouchGFX experience consistently report a measured learning curve of days, not weeks.

Step 3

Step 3 — HAL Layer Swap

Replace TouchGFX's display and touch driver integration with Sparklet's HAL callbacks. If changing silicon simultaneously, this is where the platform-specific work sits — implementing the framebuffer flush function and input read interface for the new target. Sparklet's HAL abstraction keeps all non-platform-specific GUI code entirely unchanged, making a simultaneous hardware change tractable.

Step 4

Step 4 — Build System Update and Simulator Validation

Remove TouchGFX's STM32CubeMX integration and replace with Sparklet's build configuration for the target platform. Validate on the Sparklet Windows PC simulator before running on target hardware — the PC simulator runs the same Sparklet library compiled for Windows, catching rendering and logic issues before hardware access is required. This dramatically reduces the iteration cycle on a new platform.

FAQs: TouchGFX Alternative

Sparklet is the closest functional equivalent to TouchGFX that runs natively on Renesas (RH850, RA6M3, RA8D1), NXP (i.MX RT1170, i.MX 8), and other non-STM32 platforms. Like TouchGFX, Sparklet includes a visual design tool, hardware-accelerated rendering, and a professional development workflow. Unlike TouchGFX, Sparklet is silicon-agnostic — the same UI codebase runs on all supported platforms with platform-specific hardware acceleration handled transparently inside the HAL layer.

Evaluate Sparklet as Your TouchGFX Alternative

Free evaluation binary available for all supported platforms — including Renesas, NXP, and Windows simulator. Build your first cross-platform embedded GUI screen today with Flint UI Designer. No hardware required for the initial evaluation.

Get Free Evaluation