# Riff

> Draft fresh replies, DMs and posts for X, LinkedIn, Facebook and Instagram on-device

- Category: [Productivity](https://finderatlas.com/categories/productivity)
- Pricing: Free
- Website: https://riffreply.com
- Platforms: Chrome Extension
- Made by: Zima Media OÜ, Tallinn, Estonia
- Last updated: 2026-10-25
- FinderAtlas page: https://finderatlas.com/tools/riff

## Overview

Riff is a free Chrome extension that drafts replies, comments, direct-message answers and original posts for X, LinkedIn, Facebook and Instagram. It lives in Chrome's side panel (opened from the toolbar or with Alt+Shift+R) and follows whichever post, chat or post box you are on. You give it a rough point, set dials for tone, length, how hard to pitch and how adventurous the wording should be, and it writes a version sized to that site's limits.

## Key features

- On-device AI
- Replies and comments
- DM replies and first messages
- Riff a post
- Dials
- Repurposing
- Voices and presets
- Never sends for you

## Pricing

- **Free** ($0): Free to use with no account, subscription or payment

## Best for

- Writing quick replies and comments on social posts
- Answering LinkedIn
- Messenger and Instagram DMs
- Drafting posts and X threads from rough notes

## Who uses it

- Founders
- freelancers
- sales and marketing professionals
- social media managers
- creators

## 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

## 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

## Not recommended for

- Users on browsers other than Chrome
- Mobile-only workflows
- People who want hands-off auto-posting or scheduling

## FinderAtlas editorial scores (out of 10)

- Ease of Use: 8/10
- Feature Depth: 7.5/10
- Output Quality: 6.8/10
- Privacy: 9/10
- Documentation & Support: 7.5/10

## Alternatives

- [FicWeave](https://finderatlas.com/tools/ficweave): AI fanfiction writer with visible Story Memory for consistent multi-chapter stories ([compare](https://finderatlas.com/compare/ficweave-vs-riff))

## Recent updates

- 2026-10-25 (v0.5.2): Current version listed on the Chrome Web Store
- 2026-10-21: Privacy Policy effective date, covering Slack and Microsoft Teams conversation support

## FAQ

**Does Riff post for me?**

No. Riff fills the reply, comment, message or post box and stops there. It does not schedule or publish anything, and you press send.

**Do I need an account or an API key?**

No. Riff runs on Gemini Nano, the model built into Chrome, so there are no servers to sign up for and no keys to paste.

**Which sites and browsers does it support?**

It reads posts on the desktop sites of X, LinkedIn, Facebook and Instagram and chats on LinkedIn, Facebook and Instagram. It requires desktop Chrome 138 or newer. It does not work on messenger.com yet.

**Which languages can it write in?**

It can match the post's language or write in English, Spanish, French, German or Japanese. Older Chrome versions support only English, Spanish and Japanese on-device.

**Will it agree to a price or meeting for me?**

No. If someone asks for a time, price or yes or no, Riff asks a short question back or lets them suggest one, and the decision stays yours.

**Where is my data stored?**

Your voice, links, saved points and history live in Chrome's storage on your computer. A DM conversation is read on your device and kept only until the tab closes.