# Dirt Factor — Custom Gravel & MTB Race Plans

> Custom Gravel & MTB Race Plans (iPhone/iPad app by Kaizen Endurance.)

- Source: https://appshunter.io/ios/app/dirt-factor/id6823432067 (this page in markdown: same URL + `.md`)
- Developer: [Kaizen Endurance](https://appshunter.io/developer/6823432069)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.0 · 27 MB
- Languages: American English
- Released: 2026-10-28
- Data updated: 2026-11-01

## What is Dirt Factor?

Got a race on the calendar and a goal in your head? Dirt Factor tells you whether it adds up, then builds the plan to make it happen.

Built by a mountain bike and gravel coach, Dirt Factor starts with the race, not a generic plan. It looks at what the course really demands: the climbs, the surges, the steep low-cadence grinding and the hours in the saddle. Then it compares those demands with what you can do today.

NEEDED VS. CURRENT
Pick a race and a goal: a finish time, or a place in your age group from past results. Dirt Factor models every climb, descent and surface on the course and gives you one honest answer: the power your goal takes against the power you have now.

WHERE IS THE GAP?
See the watts each climb and section takes, compared with your own race file. Know whether it's the climbs, the descents or the last three hours.

BUILT FOR DIRT
- Surface by segment, from pavement and gravel road to rough singletrack
- A 1-5 technical trail scale: rough trail sets its own speed, whatever your watts
- Altitude: the same watts feel harder at race elevation than where you train
- Your descending, cornering and pacing, learned from your race files

A PLAN BUILT BACK FROM RACE DAY
- Blocks that work one intensity at a time, with your biggest gap as the training focus
- Fits your riding days, hours, and indoor or outdoor riding
- Race rehearsals before the big day, then a real taper
- Every session explained: when to use it, how it feels and why it's in your plan
- Targets in power, heart rate and feel, with trainer files to export

CONNECTIONS
Bring in your FTP, power curve and recent riding from Intervals.icu, Strava or Wahoo, and send your sessions to Intervals.icu or your Wahoo ELEMNT.

Featured races include Big Sugar, Mid South, Unbound, SBT GRVL, Leadville and more, or upload your own course GPX.

DIRT FACTOR PREMIUM
The free version gives you one race goal and the first two weeks of a plan. Premium adds unlimited race goals with pacing, gap and section targets, custom training plans through race day, your race files and riding style in every plan, and workouts sent to Intervals.icu or your Wahoo. Premium is an auto-renewing monthly or yearly subscription with a free trial. Payment is charged to your Apple Account, and it renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings.

Terms of Use: https://dirtfactor.app/terms/
Privacy Policy: https://dirtfactor.app/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Dirt Factor Premium Yearly | $99.00 | per year |
| Dirt Factor Premium Monthly | $12.00 | per month |


## Is Dirt Factor safe?

Not enough ratings yet to assess Dirt Factor.

## Is Dirt Factor legit?

Dirt Factor has limited verification signals. The AppsHunter Legitimacy Score for Dirt Factor is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.0.4 — 2026-10-31

- See the hours a week your race needs, with a check-in before your key training weeks.
- Change your plan's start day in Plan Settings.
- Smarter training plans, fitted to your race and your course.
- Fixes and improvements.

### 1.0.3 — 2026-10-29

- Lighter weeks ride your usual days, all easy, sized from your recent riding, plus a lighter week before each phase change.
- No group ride, or riding inside? Swap a fast group ride for a Solo Race Simulation with a trainer file.
- Durability long rides now vary: late efforts, efforts every hour and bookends, built from your race course.
- Shorter races build aerobic endurance earlier in the season.
- Clearer, practical session notes.

### 1.0.2 — 2026-10-28

What's new:
- Start your plan today: pick your start date, with an easy on-ramp week when you start mid-week.
- Smarter plans: Foundation builds consistency first, then structure, with fun sessions every week; your training focus comes from your power profile, and durability builds the long ride before adding late efforts.
- Race day: course sections, race targets, typical weather and course surface on one screen, with your last race at the bottom.
- Race readiness shows what the course demands and where you stand.
- Every workout row shows its key target, and efforts come near the end of a ride.
- Race files are named by race and date. New race: FoCo Fondo.
- Fixes and improvements.

### 1.0.0 — 2026-10-28

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-01.*