Square vs Toast vs Clover for marketing data: what each POS actually exports

Restaurant POS comparisons usually focus on hardware fees, processing rates, and reliability. Those matter. But for marketing — and increasingly, for AI tools that need to read your sales data — what actually matters is what the POS lets you export.

We pulled real exports from Square, Toast, and Clover across 12 restaurants in March 2026. The differences were larger than any of the brochures suggest.

Square

Best raw data access. CSV and API exports include item-level sales, modifiers, time-of-day buckets, and customer email/phone when collected at checkout. Square's customer directory is exportable in full, including last-visit date.

Weakness: customer collection is opt-in at the kiosk. Without explicit prompting, you'll capture under 20% of guests. With a $1 loyalty incentive at the prompt, that climbs to 55–70%.

Toast

Strongest item-level reporting and modifier tracking. Toast exports include per-server sales, voids, comps, and table-level dwell time — none of which Square or Clover surface natively.

Weakness: customer email/phone is locked behind Toast's own loyalty program. You can't easily export a clean customer list to use elsewhere. API access is gated to higher tiers.

Clover

Most flexible at the hardware level — runs on standalone terminals or hand-helds. Reporting is the weakest of the three: time-of-day buckets are coarse, modifiers don't always export cleanly, and API access varies by merchant bank.

Weakness: because Clover is resold by banks, two restaurants on "Clover" can have meaningfully different feature sets and export options. Always check before signing.

The three fields that matter most for marketing

• Customer email or phone, attached to a transaction. Without this, no remarketing is possible. Square wins on access; Toast wins on capture rate via loyalty.
• Item-level sales by hour and day. Drives menu engineering, staffing, and promotion timing. Toast is the cleanest export here.
• Modifier data. Tells you which add-ons drive ticket size and which signature dishes are getting customized away from. Toast is the only one that exports this reliably.

The verdict

If you're optimizing for marketing data and willing to pay a premium, Toast. If you're optimizing for cost and self-serve data access, Square. Clover only if your bank or processor relationship makes it the obvious choice — and even then, ask for a sample export before you commit.