Every Turn of the Wrench Tells a Story.
For collectors and enthusiasts who understand that a vehicle’s documented history is as valuable as the vehicle itself, Chez Mer Studios is pleased to introduce Rennch v1.0 – the most complete vehicle maintenance platform available on Apple devices, designed to establish the provenance your vehicle deserves.
THE VALUE OF DOCUMENTATION
The automotive market rewards documentation. Whether you’re maintaining a classic 911, preserving a vintage M3, or tracking service on your daily driver, meticulous records aren’t just good practice – they’re essential to your vehicle’s long-term value.
| 10-20% Higher | Up to 40% Lost | Zero Recurring Cost |
|---|---|---|
| Resale premium for vehicles with complete, documented service histories | Value erosion for undocumented vehicles at point of sale | One-time purchase. No subscription. No hidden fees. Ever. |
Rennch brings the auto service binder into the modern era – transforming paper records, shoeboxes of receipts, and faded service logs into a permanent, professional digital archive that’s always with you, always in sync.
CORE FEATURES
1. Document DIY Repairs & Upgrades with Photos & Receipts
Rennch provides a comprehensive service log for every repair, modification, and upgrade – capturing date, mileage, cost, parts used, technician notes, and supporting photos or receipts. Whether you did it yourself or had it done professionally, every event is timestamped, searchable, and permanently attached to that vehicle’s record.
Benefit: Creates an indisputable paper trail that increases buyer confidence and resale value.
2. Scan to Import Mechanic Records & Carfax Reports
Rennch’s built-in document scanner uses Apple’s VisionKit OCR engine to read and extract data directly from physical service records, mechanic invoices, and Carfax Vehicle History Reports. Detected VIN numbers are verified automatically. Extracted service events populate the vehicle’s history with a single review step, eliminating manual data entry for existing records.
Benefit: Instantly digitizes years of prior service history – no typing required. Preserves records that would otherwise degrade or be lost.
3. Create Detailed Maintenance Reports & Records
Rennch generates professional PDF Service History Reports on demand – formatted for pre-sale disclosure, insurance documentation, or personal records. Reports include vehicle summary, complete service timeline, mileage progression, cost analysis, and attached photos. Reports can be saved, printed, or shared directly from the app.
Benefit: A press-ready document that demonstrates the vehicle’s full history to buyers, dealers, or insurers at any moment.
4. Import VIN-Verified Details & Maintenance Schedules
Rennch connects to the NHTSA vPIC database to decode any vehicle’s VIN, importing factory specifications including engine, drivetrain, trim, and manufacturer-recommended service intervals. This ensures maintenance schedules are accurate for your specific vehicle – not a generic model year estimate – and surfaces recall notices relevant to your VIN.
Benefit: Eliminates guesswork on service intervals and parts specifications. Every recommendation is calibrated to your exact vehicle.
5. Export Service Schedule to Apple Reminders & Calendar
Upcoming service events – oil changes, inspections, tire rotations, and custom intervals – can be sent directly to Apple Reminders or Apple Calendar with a single tap. Reminders include vehicle name, service type, and due mileage or date, keeping owners on schedule without requiring them to open the app.
Benefit: Integrates vehicle maintenance into the user’s existing productivity workflow. No missed services.
6. Manage Garage Parts & Consumables On Hand
The Inventory module tracks oils, filters, fluids, brake pads, and any other consumables stored in the garage. Each item is linked to the vehicle and service type it supports. Reorder thresholds trigger shopping list alerts when stock runs low. The system knows what your car needs and whether you have it on hand before you lift the hood.
Benefit: Eliminates last-minute parts runs. Ensures the right product is ready for every scheduled service.
7. Glovebox Tracks Key Documents & Renewals
The Glovebox is a secure digital document vault integrated directly into each vehicle’s profile. Users can scan or upload critical documents including insurance cards, vehicle registration, title, emissions test results, safety inspection certificates, warranty documents, extended warranties, service contracts, owner’s manuals, recall notices, purchase agreements, window stickers, and more. Documents are categorized, searchable via OCR, and tracked for expiration – with color-coded alerts as renewal dates approach.
Benefit: Every critical vehicle document is available instantly – at roadside, at the dealership, or during a sale. Expiration tracking prevents lapses in coverage or registration.
8. Click to Reorder Saved Parts, Oil, Filters & More
Rennch’s Parts module surfaces manufacturer-recommended products for each VIN-verified vehicle – the correct oil weight, oil filter, air filter, cabin filter, fuel filter, brake pads, and more – with direct Amazon ordering links. Users can save preferred brands, add custom parts, and reorder with a single tap.
Benefit: The right part, for the right car, in one tap. No more cross-referencing part numbers or searching compatibility.
9. Track All Maintenance Costs by Vehicle
Every service entry captures cost data – parts, labor, or total spend – associated with that specific vehicle. The Reports module aggregates this data into lifetime maintenance cost summaries, cost-per-mile analysis, and service category breakdowns. Vehicle-level financials are visible at a glance and included in PDF exports.
Benefit: Owners understand the true cost of ownership over time, enabling smarter decisions on maintenance, upgrades, and when to sell.
10. Sync Vehicle Records Across Devices
All vehicle data – service history, Glovebox documents, inventory, parts, photos, and reports – syncs automatically across iPhone, iPad, and Mac via Apple’s CloudKit infrastructure. Data is encrypted in transit and at rest. Rennch works fully offline and syncs automatically when connectivity is restored.
Benefit: Records are always current across every device. Loss of a phone does not mean loss of a vehicle’s history.
THREE PILLARS OF VALUE
| TRACK WHAT MATTERS | SHOW EVERY DETAIL | VIN-VERIFIED SPECS |
|---|---|---|
| Log comprehensive maintenance, repairs, and upgrades – complete with parts info, photos, and receipts. | Print, save, and export detailed vehicle maintenance records, complete with photos and receipts. | Unlock manufacturer specs and suggested maintenance schedules with VIN-verified records. |
PLATFORM & TECHNOLOGY
Rennch is built natively for Apple platforms using SwiftUI and SwiftData – not a cross-platform framework – ensuring native performance, full Accessibility support, and deep integration with Apple ecosystem services.
| 📱 iPhone & iPad (iOS 17+) | 💻 Mac (macOS 14+ Sonoma) |
|---|---|
| Full-featured mobile experience with camera scanning | Full desktop experience with native macOS UI |
| ☁️ iCloud / CloudKit Sync | 🔍 Apple VisionKit OCR |
|---|---|
| Encrypted, automatic sync across all devices | On-device document scanning and text extraction |
| 📅 Calendar & Reminders Integration | 🚗 NHTSA vPIC VIN Decoder |
|---|---|
| Service schedule exports to native Apple apps | Government-sourced factory specs per vehicle |
| 🛒 Amazon Affiliate Parts Ordering | 🤖 Android (Fall 2026) |
|---|---|
| One-tap reorder of VIN-correct parts | Planned expansion to broaden market reach |
MADE FOR ENTHUSIASTS
With built-in VIN verification, detailed records support, and a click-to-search online parts engine, Rennch is the definitive starting point for documenting car maintenance. Members of national enthusiast clubs – including Porsche Club of America, Classic Car Club of America, Mustang Club of America, National Council of Corvette Clubs, and many more – receive a twenty percent (20%) discount for purchases in 2026 with code “Drive2026”.
FROM THE DEVELOPER
“I’ve always tracked maintenance in a written log and on a spreadsheet, complete with part numbers and photos. As the years passed, both my paper records and spreadsheets became cumbersome,” said developer Kevin Donahue. “I was surprised that there weren’t any apps on the market for the true enthusiasts who want to document every maintenance cycle, repair, or upgrade to prove the provenance of their beloved car.”
Developed by Chez Mer Studios – founded by a Porsche racer and automotive enthusiast – Rennch is purpose-built by people who live this problem every day.
PRICING & AVAILABILITY
NO SUBSCRIPTIONS. NO ADS. NO DATA FARMING.
$10 LIFETIME PURCHASE.
Own it forever. Your data stays yours.
| Plan | Price | Vehicles | Best For |
|---|---|---|---|
| 7-Day Free Trial | Free | Unlimited | Try Before You Buy |
| Rennch Pro | $9.99 | 3 Vehicles | Enthusiasts & Collectors |
| Additional Vehicle Slot | $1.99 each | +1 per purchase | Growing Collections |
| Shop Mode | $4.99 | Unlimited | Professional Shops |
The 7-day free trial provides full feature access with no payment required. All purchases are processed through Apple’s StoreKit 2 framework – no account creation, no third-party billing. Cross-platform licensing means all purchases apply to both iOS and macOS through iCloud.
PRODUCT ROADMAP
Q2 2026 – Bulk Parts Add: Support for quickly adding multiple parts to inventory simultaneously – streamlining the initial setup experience for users with an existing parts collection.
Fall 2026 – Android Launch: Rennch expands to Android, opening the platform to the full mobile market and enabling cross-platform household use.
Future – Apple Intelligence Integration: AI-powered maintenance suggestions derived from the vehicle’s actual service history and upcoming schedule. Example: “Your next service is an oil change planned for April 2026. Consider rotating your tires and replacing your wiper blades at this interval to consolidate downtime.”
BEGIN DOCUMENTING YOUR CHERISHED AUTO
Download Rennch v1.0 at www.rennch.app and establish the documented provenance your vehicle deserves.
Whether you’re maintaining a single enthusiast car or managing an entire collection, Rennch provides the framework to create records that preserve both mechanical integrity and long-term value.
Media Fact Sheet
Additional information is available in the Rennch app media kit. Press inquiries should be addressed to Kevin Donahue (kevin@chezmerstudios.com).
