# UniFFI

Hacker Approved page: https://hackerapproved.com/p/uniffi/

7 people recommended UniFFI in Hacker News comments, 1 had mixed feelings and none criticized it, November 2025 to October 2026. It was recommended in 5 of 12 months, in 5 threads. It does not meet the Hacker Approved badge rule.

**Verdict:** Developers use it to share Rust code with iOS and Android apps through generated language bindings, and say it works well once set up.

Summary written by Claude from 8 comments. It was written before the November 2026 recount, and 7 of those comments still count.

## Why people recommend it

- Shares Rust code across platforms (3 comments in the sample): "native for iOS and Android with common core in rust exposed through uniffi" ([source](https://news.ycombinator.com/item?id=49644694)) "makes this a lot easier across platforms" ([source](https://news.ycombinator.com/item?id=50293461)) "shared Rust code via UniFFI" ([source](https://news.ycombinator.com/item?id=49644532))
- Works well in real projects (3 comments in the sample): "I've seen it work in a few real projects now, with just a little build system friction up front." ([source](https://news.ycombinator.com/item?id=49649780)) "they were using uniffi-rs and seemed to have great results" ([source](https://news.ycombinator.com/item?id=45840826)) "once it was set up it worked extremely well" ([source](https://news.ycombinator.com/item?id=46357033))

## What people warn about

- Higher-fidelity bindings exist elsewhere (1 comment in the sample): "much higher fidelity bindings than what you can get out of E.G. UniFFI" ([source](https://news.ycombinator.com/item?id=49063160))

## Other binding generators people recommend

- [PyO3](https://hackerapproved.com/p/pyo3/): 13 recommend, 2 mixed, 1 criticize
- [flutter_rust_bridge](https://hackerapproved.com/p/flutter-rust-bridge/): 6 recommend, 0 mixed, 0 criticize

## The badge

A product earns the Hacker Approved badge when at least 10 people recommend it, recommenders outnumber critics at least 2 to 1 (mixed feelings count toward neither side), it was recommended in at least 4 of the 12 months and in at least 5 different threads, and no single thread supplies more than half of the people who recommend it. Health and money products are never badged.

## Cite as

Hacker Approved, "UniFFI", https://hackerapproved.com/p/uniffi/ (7 recommend, 1 mixed, 0 criticize; Hacker News comments, November 2025 to October 2026).

Counts updated 2 Nov 2026, with data through October 31, 2026.