# RacePrep vs AI Crew Chief

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.

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.

## The numbers

| Metric | RacePrep | AI Crew Chief |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/raceprep-maintenance-tracker/id6478397256/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#185** |
| Size | 38 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [RaceYear](https://appshunter.io/developer/1732687200) | [JunziTech Solutions LLC](https://appshunter.io/developer/1803950800) |

## What reviewers say

### RacePrep

[App page](https://appshunter.io/ios/app/raceprep-maintenance-tracker/id6478397256)

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.

**Highlights:** Preventative maintenance tracking, Lap counting dashboard, Weekly inspection tasks, Shopping list, Parts and supplies database, Race team management

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RacePrep +1 Car (10 Total) M | $2.99 | per month |
| RacePrep +1 Car (2 Total) M | $2.99 | per month |
| RacePrep +1 Car (3 Total) M | $2.99 | per month |
| RacePrep +1 Car (4 Total) M | $2.99 | per month |
| RacePrep +1 Car (6 Total) M | $2.99 | per month |
| RacePrep +1 Car (5 Total) M | $2.99 | per month |
| RacePrep +1 Car (8 Total) M | $2.99 | per month |
| RacePrep +1 Car (7 Total) M | $2.99 | per month |
| RacePrep +1 Car (9 Total) M | $2.99 | per month |
| Team Plan + 1st Car (Monthly) | $7.99 | per month |
| RacePrep +1 Car (4 Total) | $25.00 | per year |
| RacePrep +1 Car (3 Total) | $25.00 | per year |
| RacePrep +1 Car (2 Total) | $25.00 | per year |
| Annual plan, 3 Months free | $59.99 | per year |
| Team Plan + 1st Car (Annual) | $59.99 | per year |


### AI Crew Chief

[App page](https://appshunter.io/ios/app/ai-crew-chief/id6759270231)

**Currently charting:** #185 Top Paid · Sports (US App Store)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crew Chief Pro Monthly | $9.99 | per month |
| Crew Chief Standard Yearly | $99.99 | per year |


## Frequently asked questions

### Is RacePrep free?

RacePrep is free to download, with in-app purchases available.

### Is AI Crew Chief free?

AI Crew Chief costs $9.99, and also offers in-app purchases.

### Do RacePrep or AI Crew Chief have ads?

Neither RacePrep nor AI Crew Chief shows ads.

### Which is updated more often, RacePrep or AI Crew Chief?

RacePrep ships an update monthly, and AI Crew Chief every 6 days. Most recently, RacePrep was updated on October 24, 2026 and AI Crew Chief on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*