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 – a comprehensive maintenance-tracking application for iOS and macOS designed to establish the provenance your vehicle deserves.
The Value of 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. Prospective buyers, insurance adjusters, and fellow enthusiasts all recognize the premium value of a complete, verifiable service history. Rennch provides the digital framework to create that documentation with the rigor it demands.
Built for the Detail-Oriented Owner
Comprehensive Service Archives
Chronicle every service interval, modification, and repair with precision. Document service providers, labor costs, parts expenditures, and odometer readings. Add detailed notes about work performed, parts specifications, and observations. Your vehicle’s complete narrative, accessible across all your devices.
Automated VIN Decoding
Enter any 17-character VIN and Rennch retrieves complete specifications from the NHTSA database – year, make, model, trim level, engine configuration, and transmission type. Accurate foundational data for vehicles ranging from modern daily drivers to older collector cars.
Document Digitization
Transform dealer invoices, independent shop records, and vehicle history reports into structured digital data. The integrated OCR system extracts service dates, providers, costs, and work descriptions from photographed documents, building your archive efficiently without manual transcription.
Import Historical Maintenance from Your Mechanic and CarFax
Unique in the space, Rennch uses proprietary code to parse and import printed receipts and records from your independent mechanic, manufacturer’s service centers, and CarFax vehicle history. By pulling historical records into Rennch, owners have a reliable, timeless record of provenance to showcase their car’s unique history.
Parts and Consumables Tracking
Maintain an inventory of replacement parts, fluids, and consumables with purchase documentation and cost tracking. Direct Amazon integration provides quick access to reordering while supporting continued application development through my affiliate program.
Proactive Maintenance Planning
Create interval-based maintenance schedules aligned with manufacturer specifications or your own preferred service timing. Export scheduled items to iOS Reminders or Calendar, with deep links that return to Rennch for reference and completion tracking.
Flexible Data Migration
Existing records in spreadsheets can be imported seamlessly via CSV, supporting both standard and specialized layouts. Preserve years of documentation during the transition to digital record-keeping.
Universal Platform Access with iCloud Sync
Your complete archive synchronizes automatically across iPhone, iPad, and Mac via CloudKit. Access records at the service facility, reference history in your office, or review documentation wherever your devices go.
Professional Reporting
Generate comprehensive maintenance reports filtered by timeframe, service category, or specific vehicle. Export to PDF for pre-sale documentation packages, insurance substantiation, or personal archival.
Made for Enthusiasts
With built-in VIN verification, detailed records support, and a click-to-search online parts engine, Rennch is the starting point for documenting car maintenance. Members of national enthusiasts 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.”
Straightforward Ownership
Rennch provides a 7-day trial supporting two vehicles, allowing you to evaluate its suitability for your needs. Following the trial:
- Full application: $9.99 one-time purchase for three vehicles
- Incremental expansion: $2.99 per additional vehicle slot
- Cross-platform licensing: All purchases apply to both iOS and macOS through iCloud
No subscriptions. No recurring fees. Purchase once, own permanently.
Ongoing Development
Planned enhancements include deployment to the Android platform and future support for Windows OS devices.
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).
Comments are closed