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Skim vs Udio

Features, pricing, ratings, and pros and cons, side by side.

Verdict

Skim is listed under Productivity and Udio under Audio & Speech AI. Skim scores higher in FinderAtlas's editorial review (7.6 vs 6.9 out of 10). Only Udio has a free plan or trial. Only Udio is available on iOS.

Best overall

Skim

  • Renters
  • Freelancers
  • Small business owners
  • Consumers signing contracts

Choose Skim if

  • You want a tool built for quick pre-signature review of leases, contractor quotes and terms of service, drafting a reply to push back on a clause.
  • Simple one-off $9 price covering up to 3 documents, with no subscription.
  • No account or prompt writing required.

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.
Best value
Udio
Best for beginners
Skim
Best for business
Udio

Features

15 features compared.

  • Five red flags
    Skim
    Available
    Udio
    Not available
  • Plain-English rewrite
    Skim
    Available
    Udio
    Not available
  • Paste-ready reply
    Skim
    Available
    Udio
    Not available
  • PDF upload or pasted text
    Skim
    Available
    Udio
    Not available
  • No account
    Skim
    Available
    Udio
    Not available
  • Free sample
    Skim
    Available
    Udio
    Not available
  • One-time pricing
    Skim
    Available
    Udio
    Not available
  • Text-to-song generation
    Skim
    Not available
    Udio
    Available
  • Extend and Remix
    Skim
    Not available
    Udio
    Available
  • Audio inpainting
    Skim
    Not available
    Udio
    Available
  • Audio-guided generation
    Skim
    Not available
    Udio
    Available
  • Voices
    Skim
    Not available
    Udio
    Available
  • Sessions
    Skim
    Not available
    Udio
    Available
  • Library and sharing
    Skim
    Not available
    Udio
    Available
  • iOS app
    Skim
    Not available
    Udio
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Skim
    Paid
    Udio
    Freemium
  • Free plan
    Skim
    No
    Udio
    Yes
  • Starting price
    Skim
    $9
    Udio
    $0
  • Plans
    Skim
    1 plan
    Udio
    3 plans

Skim plans

  • Skim Check

    Most popular

    $9/one-time

    One payment covering up to 3 documents, no account needed.

    • Five red flags per document
    • Rewrite for each flag
    • Paste-ready reply
    • Up to 3 documents
    • Stripe Checkout

Udio plans

  • Free

    $0

    10 daily credits plus a 100-credit monthly limit

    • 10 daily credits
    • 100 monthly credits
    • Three 2-minute songs per day

  • Standard

    Most popular

    $10/month

    Up to 2,400 credits per month

    • 2,400 monthly credit limit
    • Unlimited 2-minute song creations within credits
    • Up to 6 songs at once
    • Voice Control
    • Audio-guided generation

  • Pro

    $30/month

    Up to 6,000 credits per month

    • 6,000 monthly credit limit
    • Up to 10 songs at once
    • Everything in Standard
    • Priority generation queue

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

Skim
7.6overall
Udio
6.9overall

  • Clause Detection

    Skim
    7.0
    Udio
    Not rated

  • Output Usefulness

    Skim
    7.5
    Udio
    Not rated

  • Ease of Use

    Skim
    8.5
    Udio
    Not rated

  • Pricing Clarity

    Skim
    9.0
    Udio
    Not rated

  • Transparency

    Skim
    6.0
    Udio
    Not rated

  • Audio Quality

    Skim
    Not rated
    Udio
    8.5

  • Vocal Realism

    Skim
    Not rated
    Udio
    8.5

  • Editing Control

    Skim
    Not rated
    Udio
    8.0

  • Export & Ownership

    Skim
    Not rated
    Udio
    3.0

  • Value for Money

    Skim
    Not rated
    Udio
    6.5

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Skim

Pros

  • Simple one-off $9 price covering up to 3 documents, with no subscription
  • No account or prompt writing required
  • Output includes a rewrite and a ready-to-send reply, not just a list of risks
  • Free sample report to judge quality before paying
  • Privacy page clearly states what is and is not stored

Cons

  • Only the first 20,000 characters of a document are analyzed
  • Document text goes to xAI, whose retention Skim does not control
  • Fixed five-flag output with no follow-up chat
  • Operator, company and contact details are not disclosed on the site
  • Not legal advice, and no independent reviews found

Udio

Pros

  • 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

Cons

  • 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

Platforms

  • Web
    Skim
    Supported
    Udio
    Supported
  • Windows
    Skim
    Not supported
    Udio
    Not supported
  • macOS
    Skim
    Not supported
    Udio
    Not supported
  • iOS
    Skim
    Not supported
    Udio
    Supported
  • Android
    Skim
    Not supported
    Udio
    Not supported
  • API
    Skim
    Not supported
    Udio
    Not supported
  • Browser Extension
    Skim
    Not supported
    Udio
    Not supported

Company

  • Company
    Skim
    Not listed
    Udio
    Udio (Uncharted Labs)
  • Founded
    Skim
    Not listed
    Udio
    2023
  • Headquarters
    Skim
    Not listed
    Udio
    New York, NY
  • Listing
    Skim
    Not claimed
    Udio
    Claimed

Frequently asked questions

Is Skim better than Udio?

It depends on your workflow. Skim is built for quick pre-signature review of leases, contractor quotes and terms of service, drafting a reply to push back on a clause. Udio is built for generating song drafts with vocals.

What are the key feature differences between Skim and Udio?

Skim: Find the five contract clauses most likely to cost you money before you sign. Udio: Generate songs with vocals from text prompts and lyrics, with in-browser editing.

Does Skim or Udio have a free plan?

Udio has a free plan or trial; Skim is paid only.

Which is cheaper, Skim or Udio?

Skim starts at $9 and Udio starts at $0. See the pricing table above for what each tier includes.