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Carista OBD2 Car Scanner: what 46 low-star reviews complain about

We read 46 one-to-three-star reviews written between 2026-04-30 and 2026-09-04 and kept the ones that describe a specific unmet need. Grouped with reviews of other apps that say the same thing, they land in 2 repeated complaints. Store listing.

What reviewers complain about

• Workflow interrupted by surprise payment requirement
• Website lists unsupported features
• Unnecessary sign-in process
• Unfair to pay recurring fees after expensive hardware purchase
• Trial hides error detection behind paywall
• Subscriptions too expensive for individuals
• Subscription-only model
• Subscription requires proprietary hardware purchase
• Subscription prompts despite active payment
• Secretly charged monthly fees for 8 months despite purchasing a one-time monthly subscription

The opportunities these reviews point to

1. 0179OBD-II diagnostic app for modern vehicles with PID support17 of 234
2. 0256Locked — subscribe to read this opportunity2 of 3

Score out of 100, then how many of the cluster's reviews are about this app out of its total. Category: Automotive.