About PlainAuto

PlainAuto is a dual-audience automotive reference app for both car owners and mechanics/technicians. It provides plain-language explanations of automotive concepts, from warning lights to OBD-II codes, all in one app.

Features

Car Owner Mode

• 22 warning lights with urgency levels, meanings, and what to do
• 8 emergency procedures with step-by-step instructions
• 14 maintenance schedule items with intervals and costs
• 12 DIY repair guides with tools, steps, tips, and warnings
• 15 cost estimates with money-saving tips
• 6 fluid guides (oil, coolant, brake, transmission, power steering, washer)
• 221 automotive glossary terms
• 8 mechanic visit prep guides with questions to ask and upsell warnings
• 3 seasonal prep checklists (road trip, winter, summer)
• 4 buying and selling guides with red flags
• Under-the-hood component guide
• Vehicle tracking with service history

Mechanic / Technician Mode

• 74 OBD-II codes with diagnostic steps and common causes
• 50 torque specifications with notes
• 16 repair procedures with step-by-step instructions
• 15 diagnostic decision trees with likelihood ranking
• 30 customer explanation cards for communicating repairs
• 50+ wiring color codes by manufacturer (SAE, GM, Ford, Toyota, BMW, Honda, etc.)
• 46 labor time estimates for quoting
• Parts cross-reference across major brands
• 20 bolt patterns with vehicle fitment data
• 16 fluid capacity categories by vehicle class

Premium Content

PlainAuto offers three one-time purchase tiers (no subscriptions):

• Owner Premium ($4.99) — Unlocks all car owner content: full DIY guides, cost estimates, fluid guides, mechanic prep, seasonal checklists, buying/selling guides, under-the-hood, and service history.
• Pro Upgrade ($9.99) — Unlocks all mechanic/tech content: full OBD codes, repair procedures, diagnostic trees, wiring colors, labor times, parts cross-reference, and customer cards.
• Complete Bundle ($12.99) — Unlocks everything in both Owner and Pro tiers.

Restoring Purchases

If you reinstall the app or switch devices, go to Settings > Restore Purchases to restore your previous purchases. No account is needed — purchases are tied to your Apple ID or Google account.

Disclaimer

PlainAuto is for educational and reference purposes only. It is not a substitute for professional automotive advice, diagnosis, or repair. Always consult a certified mechanic for vehicle repairs, especially safety-critical work.

Contact Support

For bug reports, feature requests, or any questions:

• Email: nutrisize.universal@gmail.com
• Website: equalinformation.com

Platforms

PlainAuto is available for iOS and Android.

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