# NAND-16

5 Hacker News commenters recommended NAND-16 and 2 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** People recommend it as a smooth, interactive way to learn how a computer works from NAND gates, even on phones; the most common caveat is incorrect circuit rendering.

## Why people recommend it

- Smooth visuals on phones (2 comments): "I enjoyed learning by doing and I’m impressed by how well this ran on a phone" ([source](https://news.ycombinator.com/item?id=49910603)) "Impressed by visuals working so smoothly on mobile" ([source](https://news.ycombinator.com/item?id=49898804))
- Interactive, well-made visuals (2 comments): "Impressed by visuals working so smoothly on mobile" ([source](https://news.ycombinator.com/item?id=49898804)) "its well done, interactive and has great visuals" ([source](https://news.ycombinator.com/item?id=49902654))

## What people warn about

- Incorrect circuit rendering (2 comments): "The problem is the rendering is wrong." ([source](https://news.ycombinator.com/item?id=49908200)) "Circuits on the PCB terminate at nonsensical points or overlap where they shouldn't." ([source](https://news.ycombinator.com/item?id=49912213))

## Alternatives hackers recommend

- [Circuit Artist](https://hackerapproved.com/p/circuit-artist.md): 11 recommend
- [CircuitJS](https://hackerapproved.com/p/circuitjs.md): 7 recommend
- [Falstad Circuit Simulator](https://hackerapproved.com/p/falstad-circuit-simulator.md): 6 recommend

## Cite as

Hacker Approved, "NAND-16", https://hackerapproved.com/p/nand-16/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).