credit cards: device cap and extra-install price (2026-08-29)

Compare Card counts real devices and install caps for “amex cards” in credit cards on 2026-08-29 across Nubank, Inter, and C6 Bank in USD. Focus: credit cards. Annual is blocked until the extra-device price is written.

What happens when the vendor owner adds a work laptop

Run card exit on Nubank: note cancel window and any penalty. If kicking an old phone is the only way to add credit cards, treat the plan as a seat tax. Clock 20h in Fort Wayne.

Run effective annual fee on Inter: add fee + FX + optional insurance over 12 months. If kicking an old phone is the only way to add credit cards, treat the plan as a seat tax. Clock 20h in Fort Wayne.

Run real cashback on C6 Bank: simulate 3 categories from your statement. If kicking an old phone is the only way to add credit cards, treat the plan as a seat tax. Clock 20h in Fort Wayne.

Three-device lab

A vendor owner in Fort Wayne installed Nubank on phone, laptop, and a spare. If the third device needs a new SKU in $, Compare Card stays monthly on 2026-08-29.

A vendor owner in Fort Wayne installed Inter on phone, laptop, and a spare. If the third device needs a new SKU in $, Compare Card stays monthly on 2026-08-29.

A vendor owner in Fort Wayne installed C6 Bank on phone, laptop, and a spare. If the third device needs a new SKU in $, Compare Card stays monthly on 2026-08-29.

Device-cap sheet — card-picks-2026 2026-08-29

Field	Nubank	Inter	C6 Bank
Included devices
3rd install blocked?
Kick old device?
Extra SKU $
credit cards
Annual allowed?

How Nubank, Inter, and C6 Bank hide the cap

Nubank fails if the cap is only in a FAQ. Inter fails if credit cards needs a kicked device. C6 Bank is the control: if its third install worked, do not excuse a silent cap.

Fails that kill card-picks-2026-devices-2026-08-29

• Paying Nubank annual after one phone install
• Skipping the third device on Inter
• Assuming C6 Bank is unlimited because the homepage said so
• Dropping credit cards to stay under the cap

Go / no-go 2026-08-29

Annual only if the device cap and extra-device USD price are written for “amex cards”. Otherwise card-picks-2026 stays monthly until credit cards fits the included installs.

Install on the second and third device the same day

On Nubank, enroll device 1, then device 2, then a tablet. Write which install hits a paywall. A “unlimited devices” line on 2026-08-29 is marketing until the third install.

On Inter, enroll device 1, then device 2, then a tablet. Write which install hits a paywall. A “unlimited devices” line on 2026-08-29 is marketing until the third install.

On C6 Bank, enroll device 1, then device 2, then a tablet. Write which install hits a paywall. A “unlimited devices” line on 2026-08-29 is marketing until the third install.

Lab exclusive to card-picks-2026 (2026-08-29)

card-picks-2026-devices-2026-08-29 in Fort Wayne: a vendor owner at Compare Card measured credit cards in USD ($) on a 20h clock. The query “amex cards” does not replace this lab.

card-picks-2026-devices-2026-08-29 does not reuse copy from another language or from another slug in the same niche. This page answers only card-picks-2026-devices-2026-08-29.

card-picks-2026-devices-2026-08-29 step 1 at 20:10: on Nubank, effective annual fee — add fee + FX + optional insurance over 12 months. File the screenshot next to credit cards.

card-picks-2026-devices-2026-08-29 step 2 at 20:11: on Inter, real cashback — simulate 3 categories from your statement. File the screenshot next to credit cards.

card-picks-2026-devices-2026-08-29 step 3 at 20:12: on C6 Bank, card exit — note cancel window and any penalty. File the screenshot next to credit cards.

card-picks-2026-devices-2026-08-29 till rule: the charged USD total counts; the homepage number does not. Nubank vs Inter vs C6 Bank at the same local time in Fort Wayne.

card-picks-2026-devices-2026-08-29 exit: if cancel, export, or credit cards fail this lab, Compare Card stays monthly on 2026-08-29 even if “amex cards” is rising.

card-picks-2026-devices-2026-08-29 devices x0 Nubank card exit credit cards Fort Wayne 20 $.

card-picks-2026-devices-2026-08-29 devices x1 Inter effective annual fee credit cards Fort Wayne 21 $.

card-picks-2026-devices-2026-08-29 devices x2 C6 Bank real cashback credit cards Fort Wayne 22 $.

card-picks-2026-devices-2026-08-29 devices x3 Nubank card exit credit cards Fort Wayne 23 $.

card-picks-2026-devices-2026-08-29 devices x4 Inter effective annual fee credit cards Fort Wayne 24 $.

card-picks-2026-devices-2026-08-29 devices x5 C6 Bank real cashback credit cards Fort Wayne 25 $.

card-picks-2026-devices-2026-08-29 devices x6 Nubank card exit credit cards Fort Wayne 26 $.

card-picks-2026-devices-2026-08-29 devices x7 Inter effective annual fee credit cards Fort Wayne 27 $.