RacePrep vs AI Crew Chief
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RacePrep
This app helps racers manage preventative maintenance and upkeep schedules. It centralizes tasks with features like lap tracking, inspection checklists, and a parts database. Optimize your vehicle's care for a competitive edge.
- Preventative maintenance tracking
- Lap counting dashboard
- Weekly inspection tasks
- Shopping list
- Parts and supplies database
- Race team management
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Built by racers, for racers, RacePrep helps keep track of your preventative maintenance and upkeep schedule so you can transform meticulous care into a winning strategy. The app centralizes maintenance tasks in one place using tools such as a lap tracking dashboard, weekly inspection tasks, shopping list, parts and supplies database, and race team management. Please read our terms and conditions: https://www.raceyear.app/raceprep/terms-and-conditions
AI Crew Chief
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Power your team with data-driven performance. AI Crew Chief is your trackside AI assistant for sprint car, midget, micro, Jr. sprint, and quarter midget racing. From hot laps to the feature, get concise, technically precise setup and tuning guidance—the kind a veteran crew chief would give—backed by your own data and images. AI CREW CHIEF IN YOUR POCKET • Chat with your AI crew chief: ask questions, share driver feedback, and get 2–3 priority setup changes per session. • Upload tire photos (LF, RF, LR, RR) and get wear analysis: race ready, worn, or critically depleted—plus causes and fixes. • Send track images (layout, satellite, or map) and receive camber/toe suggestions, tire compound advice, and strategy notes. • Add shock dyno sheets for valving and ride analysis; engine dyno and fuel sheets for powerband and weather-corrected tuning. BUILT FOR YOUR CLASS Supports winged and non-winged sprint cars (305, 360, 410), midgets, micros (Outlaw 600), Jr. sprints, quarter midget classes (RSR, ARC, XWING, Stanley, Boomerang), and follows USAC, WoO, High Limit, NASCAR Youth and other series rules. Advice adapts to session type: Hot Laps, Qualifying, Heats, and Mains. TRACK & SESSION TOOLS • Track analyzer: upload track photos and link them to your session context. • Weather at a glance for general guidance. • Session-based workflow so setup advice matches whether you’re in practice, qualifying, or the main. TEAM READY Create or join a team, set your car type, track type (oval/road course), and surface. Your AI crew chief uses your team profile and uploaded data to keep recommendations relevant and rule-legal. From trackside insights to AI-powered analysis—AI Crew Chief helps your team make smarter decisions, faster. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://junzidev.com/privacy
Screenshots
Verdict
The clearest difference is price: RacePrep at Free against AI Crew Chief's $9.99. RacePrep also leads on iOS requirement (13.0 vs 15.1). AI Crew Chief's advantage is update cadence (every 6 days vs monthly) and chart position (#185 vs unranked). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RacePrep is free to download; AI Crew Chief costs $9.99 up front. RacePrep sells 15 in-app purchases, starting at $2.99 per month and AI Crew Chief sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
RacePrep ships an update monthly, AI Crew Chief every 6 days. Both last shipped on October 24, 2026.
| Parameter | RacePrep | AI Crew Chief |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | #185 — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 46 MB |
| Age rating | 12+ | 4+ |
| Developer | RaceYear | JunziTech Solutions LLC |
In-app purchases
RacePrep
- RacePrep +1 Car (10 Total) M$2.991 Month
- RacePrep +1 Car (2 Total) M$2.991 Month
- RacePrep +1 Car (3 Total) M$2.991 Month
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- RacePrep +1 Car (4 Total) M$2.991 Month
- RacePrep +1 Car (6 Total) M$2.991 Month
- RacePrep +1 Car (5 Total) M$2.991 Month
- RacePrep +1 Car (8 Total) M$2.991 Month
- RacePrep +1 Car (7 Total) M$2.991 Month
- RacePrep +1 Car (9 Total) M$2.991 Month
- Team Plan + 1st Car (Monthly)$7.991 Month
- RacePrep +1 Car (4 Total)$25.001 Year
- RacePrep +1 Car (3 Total)$25.001 Year
- RacePrep +1 Car (2 Total)$25.001 Year
- Annual plan, 3 Months free3 Months trial$59.991 Year
- Team Plan + 1st Car (Annual)$59.991 Year
AI Crew Chief
- Crew Chief Pro Monthly$9.991 Month
- Crew Chief Standard Yearly$99.991 Year
