Like TINA-TI, but in your browser and built for digital logic
TINA-TI is a SPICE-based analog simulation program that Texas Instruments offers at no cost. It provides the usual DC, transient and frequency domain analyses of SPICE, schematic capture, virtual instruments for setting input waveforms and probing node voltages, and post-processing of results. It is a desktop download of about 500 MB, made by DesignSoft exclusively for TI, and this complimentary version leaves out some features of the full TINA. If that is what brought you here, digiwleea is a free, in-browser alternative with a different angle: you build a computer from the transistor up.
What TINA-TI is good at
For analog work around TI parts, such as amplifiers, filters and power circuits, it is a convenient free tool: TI's models are ready to use, and the analyses tell you real voltages, currents and frequency responses. (digiwleea is an independent project, not affiliated with Texas Instruments or DesignSoft.)
How digiwleea is different
digiwleea is not a SPICE simulator: it treats transistors as switches, the level you need for digital logic and computers rather than analog behavior. It runs in any browser with nothing to install, and its course takes you from CMOS gates through adders, latches, registers and RAM to an 8-bit CPU that you program in assembly, with an AI tutor (Wleea). TINA-TI is the better pick for analog circuits and TI parts; digiwleea is the better pick for learning digital logic and computer architecture. For other analog simulators, see the LTspice and PSpice comparisons.
| TINA-TI | digiwleea | |
|---|---|---|
| Simulation | SPICE: DC, transient and frequency domain analysis | Switch-level digital logic |
| Runs on | A desktop download (about 500 MB) | Any modern browser, nothing to install |
| Price | Free (a complimentary version of TINA) | Free lab and Act I; Premium for the full course |
| Guided course to a CPU | No | Yes, 40+ levels |
No sign-up is needed to start: open the lab and place your first transistor, or read the free theory course. The account (and the AI tutor) are optional.
See for yourself: build a logic gate from transistors in the simulator, then follow the path from sand to an 8-bit CPU.
Open the digiwleea lab →Frequently asked
Is digiwleea a good TINA-TI alternative?
Yes, if you want to understand digital logic from the ground up. digiwleea is a free, in-browser simulator with a guided 40+ level course where you build every gate from CMOS transistors and work up to a real 8-bit CPU, with an AI tutor to help.
Is digiwleea free?
The sandbox lab and the first act of the course are free and need no sign-up. An optional account adds the AI tutor and cross-device sync; the full course and expanded AI tutoring are included in the monthly or annual Premium subscription.
Do I need to install anything?
No. digiwleea runs entirely in your browser, on desktop or mobile, and works offline once loaded.