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Inkey vs Smodin

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Inkey starts at $4.99, Smodin at $12.99. Both have a free tier. Only Smodin ships a public API.

InkeyThirty-odd student tools in one account: essays, maths word problems, paraphrasing, plagiarism and AI checksSmodinStudent writing suite spanning rewriting, detection and citations

Side by side

FactInkeySmodin
CategoryEssay & Assignment HelpAI Writing Assistants
Pricing modelFreemiumFreemium
Starts at$4.99 month$12.99 month
Public APINoYes
PlatformsWebWeb, API, Chrome Ext
CompanyInkey.aiSmodin LLC
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Inkey

The value is consolidation: paraphrasing, a plagiarism check and an AI detector under one $4.99 subscription costs less than any one of them bought separately. A free-for-life tier lets you test it honestly. The catch is the word meter — 10,000 words a month is a couple of long essays, and everything you run through any of the 30 tools draws on the same pool.

Pros

  • More than 30 student tools under a single subscription
  • Plagiarism checking and AI detection included rather than sold as add-ons
  • Maths word-problem solving alongside the writing tools
  • Free tier is permanent at 1,000 words a month with no card

Cons

  • Word quotas are shared across every tool, so a paraphrase costs the same budget as an essay
  • No operating company, country or team is disclosed anywhere on the site
  • No API and no editor or browser integration
  • Five tiers separated mostly by word count rather than capability

Smodin

The value is the bundle, not any single tool being best in class — at $12.99 it replaces two or three separate student subscriptions. Do not treat its AI detector or humanizer as authoritative about anything.

Pros

  • Seven-plus distinct tools under a single $12.99 subscription
  • Strong multilingual coverage across rewriting and translation
  • API access and bulk processing available on the Premium tier
  • Free tier is workable for occasional one-off jobs

Cons

  • Detection accuracy figures are vendor-stated and independently unverified
  • The humanizer feature invites academic-integrity problems for student users
  • Writing output is capped on Starter; only Premium removes the limit
  • Little public detail about the company or team behind it

Which one fits

Choose Inkey if you need

  • Students who currently pay for a paraphraser and a plagiarism checker separately
  • Coursework that mixes written assignments with maths problems
  • Testing a writing tool without a card

Choose Smodin if you need

  • Students juggling essay drafting, citations and translation in one place
  • Non-native English writers who need rewriting plus translation together
  • Anyone consolidating several small writing subscriptions into one bill

More comparisons

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