diffesq.

Free to compare.
Pro to keep.

Every comparison runs free, in full, on your device. Pro unlocks the structured formats, delta charts, and unwatermarked exports.

Free

$0

No account, no card, no expiry

Start comparing

What you get

  • Unlimited text, Markdown & source-code diffs
  • Side-by-side, unified and tree views
  • Full-fidelity plaintext — no truncation, ever
  • 30% preview of any structured-file diff
  • One watermarked sample export
  • Runs fully offline — your files never leave your device

Pro

one licence, every device you own

Most popular

$27.99 / year

$2.33 a month — save 21%

Or pay once — Lifetime $49 once

Everything in Free, plus

  • Word redlines with tracked changes
  • Excel & CSV cell-level diffs
  • Delta charts on any numeric column
  • Full JSON, YAML & XML diffs — semantic mode ignores reorderings
  • Structural source-code diffs (JavaScript, TypeScript, Python)
  • Folder-to-folder batch review & image duplicate scan
  • Large files — up to 512 MB per file depending on format, vs 5 MB free
  • Unwatermarked exports — HTML, Markdown, JSON, PDF
  • Saved profiles synced across your devices

Activate on any number of devices · payments by Stripe · refund policy

Common questions about pricing

Is Free time-limited?

No. Text, Markdown and source-code comparisons are unlimited and free forever — there is no trial clock and no account.

What does the 30% preview mean?

Structured files are diffed in full, locally, on your device. Free shows you the first 30% of the result so you can judge the comparison before paying for the rest.

Can I switch plans later?

Yes. Monthly to annual applies immediately with credit for your unused time; annual to monthly takes effect at your next renewal; and either can upgrade to Lifetime with the unused time credited at checkout.

Payments are processed securely by Stripe. Monthly and annual plans renew automatically until cancelled; the lifetime plan is a one-time charge. Prices are in US dollars. See our refund policy and terms. Billing questions? [email protected].