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What’s New Version 2.10.0
Sustaining Membership, properly unified.
• Your membership now follows you everywhere — if you're already a Sustaining
Member through any Classic Mini DIY service, the app recognizes it
automatically. No double subscriptions, ever.
• Maintenance tracking now unlocks for every active member, however you joined.
• Members-only Discord: claim your personal invite right from the app — no
more shared links.
• Smarter subscription management that knows where you subscribed and takes
you to the right place to manage it.
• One consistent list of member benefits across every screen.
Fixes: the Discord invite no longer reappears on every launch, and member
status updates more reliably after purchase, restore, or sign-in. Now go
check your tappet clearances.
Description
Transform Your Classic Mini Experience with Professional-Grade Technical Tools. The Classic Mini DIY Toolbox is the ultimate companion app for Classic Mini enthusiasts, mechanics, and restorers. Whether you're building a race car, restoring a barn find, or fine-tuning your daily driver, this comprehensive toolkit puts professional-grade calculations and technical reference data right in your pocket.
POWERFUL CALCULATION TOOLS
Compression Ratio Calculator
Optimize your engine's performance with precision compression ratio calculations. Input your bore, stroke,
head gasket thickness, deck height, and piston specifications to get accurate compression ratios. Perfect for
selecting the right pistons, head gaskets, and planning engine builds. Supports different piston dome/dish
configurations and helps you achieve your target compression for street driving or racing applications.
Advanced Gearbox Calculator
Master your drivetrain setup with comprehensive gear ratio analysis. Calculate final drive ratios, determine
speed vs RPM relationships, and understand how tire size changes affect your gearing. Essential for autocross,
track days, or highway cruising optimization. Compare different transmission and differential combinations to
find the perfect setup for your driving style.
SU Carburetor Needle Configurator
Navigate the complex world of SU carburetor tuning with confidence. Our extensive needle database includes
detailed specifications for hundreds of needle profiles. Get tuning recommendations based on your engine
modifications, altitude, and performance goals. Visual needle profile charts help you understand how different
needles affect fuel delivery across the RPM range.
COMPREHENSIVE REFERENCE DATABASE
Torque Specifications
Never guess at bolt torques again. Our complete database covers engine internals, suspension components,
drivetrain assemblies, and body hardware. Organized by system and component, with both metric and imperial
values. Includes special procedures and notes for critical fasteners.
Common Clearances & Tolerances
Professional-grade clearance specifications for engine rebuilds. Covers bearing clearances, ring gaps, valve
guides, timing chain stretch limits, and wear tolerances. Essential for determining what's serviceable and
what needs replacement during rebuilds.
WHY CLASSIC MINI ENTHUSIASTS CHOOSE OUR APP
- Offline Functionality - All calculations and reference data work without an internet connection
- Professional Accuracy - Data verified against factory service manuals and technical bulletins
- Regular Updates - Continuously expanded database with new parts and applications
- User-Friendly Interface - Clean, intuitive design optimized for garage and workshop use
- Comprehensive Coverage - From 1959 Austin Seven to 2000 Rover Mini and beyond
- Expert Curation - Content developed by experienced Classic Mini mechanics and racers
PERFECT FOR:
- Home mechanics working on their own cars
- Professional shops specializing in classic BMC vehicles
- Racing teams optimizing performance
- Restoration specialists maintaining authenticity
- Parts suppliers verifying compatibility
- Classic Mini clubs and technical forums
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
In-App Purchases US pricing
Support CMDIY Subscription
Sustaining Member · Monthly$1.99
Capabilities
In-App Purchases
Accessibility
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Version history 18 versions
Build 886687712v2.10.02026-06-12 01:39:06
Sustaining Membership, properly unified.
• Your membership now follows you everywhere — if you're already a Sustaining
Member through any Classic Mini DIY service, the app recognizes it
automatically. No double subscriptions, ever.
• Maintenance tracking now unlocks for every active member, however you joined.
• Members-only Discord: claim your personal invite right from the app — no
more shared links.
• Smarter subscription management that knows where you subscribed and takes
you to the right place to manage it.
• One consistent list of member benefits across every screen.
Fixes: the Discord invite no longer reappears on every launch, and member
status updates more reliably after purchase, restore, or sign-in. Now go
check your tappet clearances.
Build 886263703v2.9.02026-05-29 15:57:09
A fresh new look.
The Toolbox has been redesigned end to end to match the Classic Mini DIY brand — new typography, refreshed olive-and-orange colors, and cleaner page layouts across every screen, in both light and dark mode.
Also in this release:
• Home Screen and Control Center widgets now work on iOS 18 and later (previously limited to the newest devices only)
• Refreshed headers and navigation across the calculators, reference guides, your garage, and settings
• Sharper dark-mode colors and consistency polish throughout
Build 884523974v2.8.02026-04-20 02:02:09
- Improves the profile experience, to help unify the behavior across all channels, web and mobile
Build 883522674v2.7.02026-03-19 18:44:13
What's New
- Context-aware onboarding flow that adapts to new vs. returning users
- Unified membership experience with streamlined subscription flow
- Toolbar refresh button on the Maintenance Log for manual data sync
Bug Fixes
- Fixed vehicles not loading after migration due to stale sync timestamps
- Fixed maintenance intervals not appearing for migrated vehicles — instances are now auto-created if missing
- Fixed Supabase Realtime warnings and improved channel lifecycle management
- Fixed content alignment on the Maintenance Log screen
- Fixed subscription presentation and StoreKit simulator issues
- Improved data migration reliability with Edge Function recovery path
Under the Hood
- Batch upsert for initial maintenance instances (single request instead of N)
- Optimized existence checks with contains(where:) instead of filter + isEmpty
- Fixed flaky unit tests caused by singleton state during test execution
Build 883441713v2.6.02026-03-17 17:24:55
What's New:
- Improved onboarding experience for new users and returning members
- Unified membership flow makes it easier to become a Sustaining Member
- Pull-to-refresh now works reliably on the Maintenance Log screen
Bug Fixes:
- Fixed an issue where vehicles and maintenance data could appear missing after an account update
- Improved data sync reliability when switching between devices
- General stability improvements
Build 883403737v2.5.02026-03-16 19:13:26
- Redesigned onboarding: A fresh welcome experience for new users with clear setup steps
- Welcome-back flow: If your session expires, a streamlined sign-in flow helps you restore your data quickly
- Membership onboarding: A guided step-by-step experience when becoming a Sustaining Member — subscribe, sign in,
join Discord, all in one place
- Backend improvements: Faster, more reliable data sync behind the scenes
- Bug fixes and performance improvements
Build 883347536v2.4.02026-03-14 03:23:41
What's New
- Improved app stability and performance throughout
- Fixed an issue where maintenance data could be incorrectly cleared when switching accounts
- Fixed subscription status not updating immediately after purchase
- Improved sign-in reliability with better error handling
- Smoother vehicle and maintenance data syncing with fewer interruptions
- Widget now stays in sync with the latest app version
- General bug fixes and under-the-hood improvements
Build 881832146v2.3.12026-01-26 03:33:14
- Improvements to the error handling with subscription flows
- Improvements to edge cases related to subscription flows
Build 881858332v2.3.22026-01-26 19:25:42
- Minor improvements under the hood
Build 881028444v2.3.02025-12-27 11:12:58
- Fixes bugs with authenticated and paid subscriber features
Build 880219501v2.2.22025-12-01 07:38:57
- Additional bugfixes for the authentication flow
- Requires an account now when becoming a sustaining member to ensure the maintenance log works properly
Build 880205091v2.2.12025-11-30 19:47:41
- Bugfixes with the loading behavior on the maintenance log
- Bugfixes with saving maintenance history
- Minor tweaks to display text on pages
- More reliable subscription management
Build 880022355v2.22025-11-24 07:13:52
- Under the hood fixes to the maintenance log tool. This will require a one-time upgrade of your data, which should work automatically. If that doesn't work, please get in touch with me at classicminidiy@gmail.com
- The maintenance log is hopefully clearer now in how it works
- Fixes a number of under-the-hood items to make the app more reliable
Build 879566407v2.12025-11-08 00:40:43
- Fixes sign-up flow a bit
- Fixes some notification bugs
- Fixes countdown for service intervals
- Adjusts home screen UI to be a bit more logical
Build 879346206v2.02025-11-04 20:17:03
- Brand new maintenance log with comprehensive service intervals, maintenance reminders, and multiple Mini tracking for easy maintenance on your Classic Mini(notifications and tracking require an account)
- Performance and bug fixes to considerably improve application speed
Build 878737216v1.22025-10-08 16:35:00
- Adds Electrical Diagrams with a built-in PDF viewer for easy access while working on your Mini
- Minor bugfixes
- Adds a share button for easy sharing of the app to friends
- Adds review button in settings in case you'd like to leave a glowing review
- Updates App Icon to something a bit more visible on the home screen
Build 878637879v1.12025-10-06 01:45:03
- Added support for iOS 17 and above
- Changed home screen name to read "Mini Toolbox" instead of the much longer "Classic Mini DIY Toolkit"
- Bug fixes related to dark mode on some views
- Usability fixes on accordions for the torque specs page
- Improved select boxes on the gearbox calculator and compression calculator
- Fixes the loading speed of the various views
Build 877528527v1.02025-10-03 00:18:06
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Availability 1 of 1 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 2 | 5.0 | 2.10.0 |
Change log 22 changes · US
✎
releaseNotes updated
Sustaining Membership, properly unified.
• Your membership now follows you everywhere — if you're already a Sustaining
Member through any Classic Mini DIY se
✎
description updated
Transform Your Classic Mini Experience with Professional-Grade Technical Tools. The Classic Mini DIY Toolbox is the ultimate companion app for Classic Mini enth
✎
subtitle updated
A Classic Mini's Best Friend
✎
name updated
Classic Mini Toolbox - CMDIY
◆
Version 2.10.0 released
Sustaining Membership, properly unified.
• Your membership now follows you everywhere — if you're already a Sustaining
Member through any Classic Mini DIY service, the app recognizes it
automatically. No double subscriptions, ever.
• M
◆
Version 2.9.0 released
A fresh new look.
The Toolbox has been redesigned end to end to match the Classic Mini DIY brand — new typography, refreshed olive-and-orange colors, and cleaner page layouts across every screen, in both light and dark mode.
Also in this r
◆
Version 2.8.0 released
- Improves the profile experience, to help unify the behavior across all channels, web and mobile
◆
Version 2.7.0 released
What's New
- Context-aware onboarding flow that adapts to new vs. returning users
- Unified membership experience with streamlined subscription flow
- Toolbar refresh button on the Maintenance Log for manual data sync
Bug Fixes
◆
Version 2.6.0 released
What's New:
- Improved onboarding experience for new users and returning members
- Unified membership flow makes it easier to become a Sustaining Member
- Pull-to-refresh now works reliably on the Maintenance Log screen
Bug Fixes
◆
Version 2.5.0 released
- Redesigned onboarding: A fresh welcome experience for new users with clear setup steps
- Welcome-back flow: If your session expires, a streamlined sign-in flow helps you restore your data quickly
- Membership onboarding: A guided st
◆
Version 2.4.0 released
What's New
- Improved app stability and performance throughout
- Fixed an issue where maintenance data could be incorrectly cleared when switching accounts
- Fixed subscription status not updating immediately after purchase
- Impr
◆
Version 2.3.2 released
- Minor improvements under the hood
◆
Version 2.3.1 released
- Improvements to the error handling with subscription flows
- Improvements to edge cases related to subscription flows
◆
Version 2.3.0 released
- Fixes bugs with authenticated and paid subscriber features
◆
Version 2.2.2 released
- Additional bugfixes for the authentication flow
- Requires an account now when becoming a sustaining member to ensure the maintenance log works properly
◆
Version 2.2.1 released
- Bugfixes with the loading behavior on the maintenance log
- Bugfixes with saving maintenance history
- Minor tweaks to display text on pages
- More reliable subscription management
◆
Version 2.2 released
- Under the hood fixes to the maintenance log tool. This will require a one-time upgrade of your data, which should work automatically. If that doesn't work, please get in touch with me at classicminidiy@gmail.com
- The maintenance log is h
◆
Version 2.1 released
- Fixes sign-up flow a bit
- Fixes some notification bugs
- Fixes countdown for service intervals
- Adjusts home screen UI to be a bit more logical
◆
Version 2.0 released
- Brand new maintenance log with comprehensive service intervals, maintenance reminders, and multiple Mini tracking for easy maintenance on your Classic Mini(notifications and tracking require an account)
- Performance and bug fixes to cons
◆
Version 1.2 released
- Adds Electrical Diagrams with a built-in PDF viewer for easy access while working on your Mini
- Minor bugfixes
- Adds a share button for easy sharing of the app to friends
- Adds review button in settings in case you'd like to leave a gl
◆
Version 1.1 released
- Added support for iOS 17 and above
- Changed home screen name to read "Mini Toolbox" instead of the much longer "Classic Mini DIY Toolkit"
- Bug fixes related to dark mode on some views
- Usability fixes on accordions for the torque specs
◆
Version 1.0 released