# Riff vs Udio

> Riff: Draft fresh replies, DMs and posts for X, LinkedIn, Facebook and Instagram on-device
> Udio: Generate songs with vocals from text prompts and lyrics, with in-browser editing

- Riff profile: https://finderatlas.com/tools/riff
- Udio profile: https://finderatlas.com/tools/udio
- Comparison page: https://finderatlas.com/compare/riff-vs-udio
- Last reviewed: October 2026

## Verdict

Riff is listed under Productivity and Udio under Audio & Speech AI. Riff scores higher in FinderAtlas's editorial review (7.8 vs 6.9 out of 10). Both have a free plan or trial. Only Riff is available on Chrome Extension. Only Udio is available on Web and iOS.

### Choose Riff if

- You want a tool built for writing quick replies and comments on social posts.
- Free, with no account, subscription or API key.
- Generation runs on-device with Gemini Nano, so text is not sent to a server.

### Choose Udio if

- You want a tool built for generating song drafts with vocals.
- Generates songs with vocals from a prompt and lyrics.
- Extend, remix and inpainting tools for editing tracks.

## Pricing

| | Riff | Udio |
| --- | --- | --- |
| Pricing model | Free | Freemium |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | Riff | Udio |
| --- | --- | --- |
| On-device AI | Yes | Not listed |
| Replies and comments | Yes | Not listed |
| DM replies and first messages | Yes | Not listed |
| Riff a post | Yes | Not listed |
| Dials | Yes | Not listed |
| Repurposing | Yes | Not listed |
| Voices and presets | Yes | Not listed |
| Never sends for you | Yes | Not listed |
| Text-to-song generation | Not listed | Yes |
| Extend and Remix | Not listed | Yes |
| Audio inpainting | Not listed | Yes |
| Audio-guided generation | Not listed | Yes |
| Voices | Not listed | Yes |
| Sessions | Not listed | Yes |
| Library and sharing | Not listed | Yes |
| iOS app | Not listed | Yes |

## Platforms

| Platform | Riff | Udio |
| --- | --- | --- |
| Web | No | Yes |
| Windows | No | No |
| macOS | No | No |
| iOS | No | Yes |
| Android | No | No |
| API | No | No |
| Browser Extension | No | No |
| Chrome Extension | Yes | No |

## Riff strengths

- Free, with no account, subscription or API key
- Generation runs on-device with Gemini Nano, so text is not sent to a server
- Covers replies, DMs, posts and X threads in one side panel
- Never presses send, which keeps the user in control
- Dials for tone, pitch and length, plus a Fresh score to avoid repetitive openings

## Riff limitations

- Requires desktop Chrome 138 or newer and a one-time Gemini Nano download
- Output quality is limited by the small on-device model
- Chrome only; no Firefox, Safari or mobile support
- Very new, with few reviews on the Chrome Web Store

## Udio strengths

- Generates songs with vocals from a prompt and lyrics
- Extend, remix and inpainting tools for editing tracks
- Free plan with daily and monthly credits
- Official iOS app alongside the web app
- Paid credit limits were doubled or raised after the UMG deal

## Udio limitations

- Downloads of audio, video and stems are disabled on all plans
- Free plan is capped at three 2-minute songs per day
- No public API and no Android app
- Licensed platform and new models are announced but have no published launch date

## FAQ

**Is Riff better than Udio?**

It depends on your workflow. Riff is built for writing quick replies and comments on social posts. Udio is built for generating song drafts with vocals.

**What are the key feature differences between Riff and Udio?**

Riff: Draft fresh replies, DMs and posts for X, LinkedIn, Facebook and Instagram on-device. Udio: Generate songs with vocals from text prompts and lyrics, with in-browser editing.

**Does Riff or Udio have a free plan?**

Yes, both do. Riff is free and Udio is freemium, and each has a free plan or trial.

**Which is cheaper, Riff or Udio?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.