Riff
Draft fresh replies, DMs and posts for X, LinkedIn, Facebook and Instagram on-device
Draft fresh replies, DMs and posts for X, LinkedIn, Facebook and Instagram on-device
Generate songs with vocals from text prompts and lyrics, with in-browser editing
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.
Riff
16 features compared.
Plans as listed by each vendor. Check their sites for current prices.
$0
Free to use with no account, subscription or payment
$0
10 daily credits plus a 100-credit monthly limit
$10/month
Up to 2,400 credits per month
$30/month
Up to 6,000 credits per month
Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.
Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.
Picked by our editors. Not paid placement.
Productivity
Free online calculator suite for health, finance, pregnancy, gold, and everyday math
Audio & Speech AI
Listen to documents and web pages with natural AI voices, and dictate by voice
Productivity
AI presentation maker with auto-formatting Smart Slides and brand-controlled themes
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.
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.
Yes, both do. Riff is free and Udio is freemium, and each has a free plan or trial.
Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.