shouldiuse.io

VERDICT

Should I use Square?

Square APIs and SDKs allow developers to build custom apps and integrations for payments, customers, commerce, and staff solutions. - developer.squareup.com

Depends. Buy if you're a small seller or developer who wants simple payments and POS with a free tier. Avoid if you run high volume, thin margins, or can't survive sudden fund holds.

Confidence

Medium. Based on 18 public sources; snippets were truncated, so user quotes are partial.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support quality
  • Security posture

Pricing

$0/month

Square Free

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Premium plan$90/month cited

Best for

  • Small retail shops and cafes
  • Mobile and pop-up sellers
  • Developers adding payments fast
  • Solo operators wanting one stack

Not for

  • High-volume merchants chasing lower rates
  • Restaurants — Toast fits better
  • Businesses that can't survive frozen funds
  • Teams needing responsive human support

Gotchas - check before you buy

high

Sudden fund holds can freeze revenue; multiple Reddit threads document this

high

WooCommerce Square plugin had SQLi and data-exposure CVEs; patch integrations fast

medium

Do the math on flat rates: bigger tickets make 2.5%+10¢ pricier than interchange-plus

medium

Square changed tap/dip/swipe rates with seller backlash; pricing isn't guaranteed long-term

Pros and cons

Pros

  • Free plan with no monthly fee
  • Wide API surface: payments, customers, staff solutions
  • Payroll product recommended by G2 reviewers
  • Reviewers call the POS convenient and easy
  • All-in-one: POS, online store, invoicing, loans

Cons

  • Flat-rate fees expensive at volume; hidden charges reported
  • Frequent reports of sudden account holds and terminations
  • Support quality widely panned by sellers
  • Rate changes frustrated existing sellers
  • Developer forum raises unresolved SDK vulnerability questions

Sources & method

Analyzed 9/23/2026 - 18 sources - Core platform advertises encryption and PCI compliance; parent-company breach and third-party plugin CVEs are the flags.

official x3review x11security x3news x1
  • Cash App data breach at Block (Square's parent), Block confirmed a Cash App breach affecting 8M users, per Security Magazine.
  • WooCommerce Square plugin SQL injection, CVE-2026-57810: blind SQLi in the WooCommerce Square WordPress plugin, per SentinelOne.
  • WooCommerce Square insecure direct object reference, Unauthenticated sensitive-information exposure in get-token-by-id, per Wordfence.

Key stats

  • Value for money: 3/5

    Rating

  • $0/month

    Starting price

  • 18

    Sources

  • Analyzed

  • Value for money: 3/5. Flat rates are transparent, but fees draw frequent complaints
  • Ease of use: 4/5. G2 reviewers call it convenient and quick to start
  • Feature depth: 4/5. POS, payroll, online store, banking, plus full API surface
  • Support quality: 2/5. Recurring Reddit reports of holds and poor support
  • Security posture: 3/5. Strong encryption claims; parent-company breach hit 8M users
  • 7,474 Trustpilot reviews mixed; recurring hold complaints
  • Yes Free tier Square Free has no monthly fee
  • 2.5% + 10¢ Processing rate with $90/mo plan cited by CardFellow
  • $437.5M Funding raised pre-public, per StartupIntros

Pricing

Square Free

$0/month

  • No monthly fee
  • Pay per transaction

Premium plan

$90/month cited

  • 2.5% + 10¢ processing cited by CardFellow
  • Aimed at higher-volume sellers

Security

Core platform advertises encryption and PCI compliance; parent-company breach and third-party plugin CVEs are the flags.

  • Cash App data breach at Block (Square's parent)Block confirmed a Cash App breach affecting 8M users, per Security Magazine.15
  • WooCommerce Square plugin SQL injectionCVE-2026-57810: blind SQLi in the WooCommerce Square WordPress plugin, per SentinelOne.16
  • WooCommerce Square insecure direct object referenceUnauthenticated sensitive-information exposure in get-token-by-id, per Wordfence.17

Alternatives

Compare Square with each alternative.

  • Toast

    Restaurant-first POS; the go-to for food service.

    Square vs Toast

  • Stripe

    Developer-first payments APIs with deeper customization.

    Square vs Stripe

  • Shopify POS

    Retail plus online in one; strong if you sell on Shopify.

Full analysis

Based on 18 public sources; snippets were truncated, so user quotes are partial.

Great starter payments/POS for small sellers; flat fees and fund-hold risk bite as you scale. Devs may prefer Stripe.

Methodology

Based on 18 public sources; snippets were truncated, so user quotes are partial.

Sources

  1. Square Review 2026: Features, Pros And Cons - Forbesforbes.com
    review
  2. Square US Reviews - Trustpilottrustpilot.com
    review
  3. Square Point of Sale Reviews - G2g2.com
    review
  4. Square Payroll Reviews - G2g2.com
    review
  5. Square Reviews - Consumer Affairsconsumeraffairs.com
    review
  6. Never Use Square - Reddit r/smallbusinessreddit.com
    review
  7. Avoid Square at all costs - Reddit r/smallbusinessreddit.com
    review
  8. Are the fees for Square worth it? - Reddit r/Entrepreneurreddit.com
    review
  9. A Change to our Tap, Dip, and Swipe Rate - Square Communitycommunity.squareup.com
    review
  10. Square Fees Explained 2026 - Swipesumswipesum.com
    review
  11. Square Review - CardFellowcardfellow.com
    review
  12. Square Processing Fees, Plans, and Software Pricingsquareup.com
    official
  13. Payments Pricing with Square APIs and SDKsdeveloper.squareup.com
    official
  14. Understand Square's privacy and security measuressquareup.com
    official
  15. Block confirms Cash App breach affecting 8M users - Security Magazinesecuritymagazine.com
    news
  16. CVE-2026-57810: WooCommerce Square Plugin SQLi - SentinelOnesentinelone.com
    security
  17. WooCommerce Square Insecure Direct Object Reference - Wordfencewordfence.com
    security
  18. Vulnerabilities with Square version 42.0.0 - Square Developer Forumsdeveloper.squareup.com
    security

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