credit cards: trial clock and card-on-file (2026-09-14)

Compare Card times the trial clock and card-on-file trap for “credit cards” in credit cards on 2026-09-14 across Nubank, Inter, and C6 Bank. Focus: credit cards. Annual is blocked until day-8 charging is written, not guessed.

Go / no-go 2026-09-14

Annual only if the trial clock, card-on-file, and day-8 USD price are written for “credit cards”. Otherwise card-picks-2026 stays monthly until credit cards survives day 8.

Start the trial without pretending the card is optional

On Nubank, write whether a card is required, the trial length in days, and the first USD charge date. A “free” badge on 2026-09-14 is not a clock.

On Inter, write whether a card is required, the trial length in days, and the first USD charge date. A “free” badge on 2026-09-14 is not a clock.

On C6 Bank, write whether a card is required, the trial length in days, and the first USD charge date. A “free” badge on 2026-09-14 is not a clock.

What happens at hour 32 after the trial

Run card exit on Nubank: note cancel window and any penalty. If the product converts to paid without a second click, freeze annual. credit cards must still work on the free day.

Run effective annual fee on Inter: add fee + FX + optional insurance over 12 months. If the product converts to paid without a second click, freeze annual. credit cards must still work on the free day.

Run real cashback on C6 Bank: simulate 3 categories from your statement. If the product converts to paid without a second click, freeze annual. credit cards must still work on the free day.

Forty-eight-hour trial lab

A technical founder in Knoxville started Nubank at 32h local, set a calendar alert for day 6, and screenshotted the card screen. If support cannot pause the clock, Compare Card stays monthly on 2026-09-14.

A technical founder in Knoxville started Inter at 32h local, set a calendar alert for day 6, and screenshotted the card screen. If support cannot pause the clock, Compare Card stays monthly on 2026-09-14.

A technical founder in Knoxville started C6 Bank at 32h local, set a calendar alert for day 6, and screenshotted the card screen. If support cannot pause the clock, Compare Card stays monthly on 2026-09-14.

Trial clock sheet — card-picks-2026 2026-09-14

Field	Nubank	Inter	C6 Bank
Card required?
Trial days
First charge $
Pause without chat?
credit cards
Annual allowed?

How Nubank, Inter, and C6 Bank fail the clock

Nubank fails if the card is hidden until the last hour. Inter fails if credit cards dies when the trial ends. C6 Bank is the control: if its day-8 price is missing, stop.

Fails that kill card-picks-2026-trial-2026-09-14-s5

• Starting Nubank trial without a day-8 date
• Ignoring the card screen on Inter
• Skipping credit cards because the trial felt long
• Letting C6 Bank auto-convert overnight

Lab exclusive to card-picks-2026 (2026-09-14)

card-picks-2026-trial-2026-09-14-s5 in Knoxville: a technical founder at Compare Card measured credit cards in USD ($) on a 32h clock. The query “credit cards” does not replace this lab.

card-picks-2026-trial-2026-09-14-s5 does not reuse copy from another language or from another slug in the same niche. This page answers only card-picks-2026-trial-2026-09-14-s5.

card-picks-2026-trial-2026-09-14-s5 step 1 at 32:10: on Nubank, effective annual fee — add fee + FX + optional insurance over 12 months. File the screenshot next to credit cards.

card-picks-2026-trial-2026-09-14-s5 step 2 at 32:11: on Inter, real cashback — simulate 3 categories from your statement. File the screenshot next to credit cards.

card-picks-2026-trial-2026-09-14-s5 step 3 at 32:12: on C6 Bank, card exit — note cancel window and any penalty. File the screenshot next to credit cards.

card-picks-2026-trial-2026-09-14-s5 till rule: the charged USD total counts; the homepage number does not. Nubank vs Inter vs C6 Bank at the same local time in Knoxville.

card-picks-2026-trial-2026-09-14-s5 exit: if cancel, export, or credit cards fail this lab, Compare Card stays monthly on 2026-09-14 even if “credit cards” is rising.

card-picks-2026-trial-2026-09-14-s5 niche card-picks-2026 1: Nubank in credit cards only closes “credit cards” if credit cards is measured in Knoxville at 32:15 on this URL.

card-picks-2026-trial-2026-09-14-s5 niche card-picks-2026 2: Inter in credit cards only closes “credit cards” if credit cards is measured in Knoxville at 32:16 on this URL.

card-picks-2026-trial-2026-09-14-s5 niche card-picks-2026 3: C6 Bank in credit cards only closes “credit cards” if credit cards is measured in Knoxville at 32:17 on this URL.

card-picks-2026-trial-2026-09-14-s5 token trial-s5: file card-picks-2026-trial-2026-09-14-s5 in Knoxville at 32:07 with credit cards and “credit cards”. This proof does not reuse the seats, FX, or support lab.

card-picks-2026-trial-2026-09-14-s5-repair-0: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-14 de card-picks-2026 (salt-repair 0). Prova exclusiva card-picks-2026-2026-09-14-r0 nao copia outro URL. ops head em Spokane registrou Nubank-2026-09-14-r0-trial com carimbo 9h e foco trial-card-picks-2026-lab.

• card-picks-2026 2026-09-14 item-r0a: effective annual fee em Nubank
• card-picks-2026 2026-09-14 item-r0b: ops head fechou sem anual
• card-picks-2026 2026-09-14 item-r0c: Spokane carimbo 9h

card-picks-2026-trial-2026-09-14-s5-repair-1: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-14 de card-picks-2026 (salt-repair 1). Prova exclusiva card-picks-2026-2026-09-14-r1 nao copia outro URL. ops head em Worcester registrou Inter-2026-09-14-r1-trial com carimbo 10h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-2: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-14 de card-picks-2026 (salt-repair 2). Prova exclusiva card-picks-2026-2026-09-14-r2 nao copia outro URL. vendor owner em Spokane registrou C6 Bank-2026-09-14-r2-trial com carimbo 11h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-3: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-14 de card-picks-2026 (salt-repair 3). Prova exclusiva card-picks-2026-2026-09-14-r3 nao copia outro URL. risk analyst em Fort Wayne registrou Nubank-2026-09-14-r3-trial com carimbo 12h e foco trial-card-picks-2026-lab.

• card-picks-2026 2026-09-14 item-r3a: effective annual fee em Nubank
• card-picks-2026 2026-09-14 item-r3b: risk analyst fechou sem anual
• card-picks-2026 2026-09-14 item-r3c: Fort Wayne carimbo 12h

card-picks-2026-trial-2026-09-14-s5-repair-4: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-14 de card-picks-2026 (salt-repair 4). Prova exclusiva card-picks-2026-2026-09-14-r4 nao copia outro URL. vendor owner em Worcester registrou Inter-2026-09-14-r4-trial com carimbo 13h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-5: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-14 de card-picks-2026 (salt-repair 5). Prova exclusiva card-picks-2026-2026-09-14-r5 nao copia outro URL. risk analyst em Knoxville registrou C6 Bank-2026-09-14-r5-trial com carimbo 14h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-6: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-14 de card-picks-2026 (salt-repair 6). Prova exclusiva card-picks-2026-2026-09-14-r6 nao copia outro URL. risk analyst em Knoxville registrou Nubank-2026-09-14-r6-trial com carimbo 15h e foco trial-card-picks-2026-lab.

• card-picks-2026 2026-09-14 item-r6a: effective annual fee em Nubank
• card-picks-2026 2026-09-14 item-r6b: risk analyst fechou sem anual
• card-picks-2026 2026-09-14 item-r6c: Knoxville carimbo 15h

card-picks-2026-trial-2026-09-14-s5-repair-7: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-14 de card-picks-2026 (salt-repair 7). Prova exclusiva card-picks-2026-2026-09-14-r7 nao copia outro URL. finance ops em Akron registrou Inter-2026-09-14-r7-trial com carimbo 16h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-8: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-14 de card-picks-2026 (salt-repair 8). Prova exclusiva card-picks-2026-2026-09-14-r8 nao copia outro URL. vendor owner em Modesto registrou C6 Bank-2026-09-14-r8-trial com carimbo 17h e foco trial-card-picks-2026-lab.

card-picks-2026-trial-2026-09-14-s5-repair-9: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-14 de card-picks-2026 (salt-repair 9). Prova exclusiva card-picks-2026-2026-09-14-r9 nao copia outro URL. risk analyst em Knoxville registrou Nubank-2026-09-14-r9-trial com carimbo 18h e foco trial-card-picks-2026-lab.

• card-picks-2026 2026-09-14 item-r9a: effective annual fee em Nubank
• card-picks-2026 2026-09-14 item-r9b: risk analyst fechou sem anual
• card-picks-2026 2026-09-14 item-r9c: Knoxville carimbo 18h