# FastAI - Sprint Form Analysis — Form critique for sprinters.

> AI-powered sprint form analysis and improvement tool for athletes. (iPhone/iPad app by Fastai LLC.)

- Source: https://appshunter.io/ios/app/fastai-sprint-form-analysis/id6743063713 (this page in markdown: same URL + `.md`)
- Developer: [Fastai LLC](https://appshunter.io/developer/1801091210)
- Category: Sports, Health & Fitness
- Price: Free with in-app purchases
- Rating: 5.00/5 from 4 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 144 MB
- Languages: American English
- Released: 2025-03-31
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fastai-sprint-form-analysis/id6743063713/reviews.md

## What is FastAI?

FastAI is a tool for sprinters to analyze, track, and improve their sprinting.

How it works:
1) Users upload a side view of their top speed sprinting to FastAI.
2) The video is processed using an AI model. Key frames like touchdown, toe-off, and strike are extracted from the video, and the model will then analyze the users form. 
3) The AI will determine what technique errors the user is making (over-striding, poor hip flexion, poor knee extension, etc).
 
FastAI will deliver personalized cues and drills for the user to target their respective weaknesses. The app will also grade each analysis, provide quantitative data of joint angles, and will keep a log of past analyses.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- AI-powered video analysis
- Identification of technique errors
- Personalized drills and cues
- Quantitative data on joint angles
- Log of past analyses
- Progress tracking

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| FastAI Yearly Subscription | $49.99 | per year |
| FastAI Monthly Subscription | $9.99 | per month |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/fastai-sprint-form-analysis/id6743063713/reviews.md

### 5/5 — 40 yard dash

*2025-08-05*

After submitting my video and getting feedback I took about .2 seconds off my 40 yard dash!

### 5/5 — Amazing app

*2025-07-17*

Really helpful and can substitute as a deadbeat coach.

### 5/5 — Thank you

*2025-06-14*

This help me so much now I don’t need a coach to fix mistakes

## Frequently asked questions about FastAI

### What is FastAI used for?

FastAI is a tool designed for sprinters to analyze, track, and improve their sprinting form. It uses AI to process videos and identify technique errors, providing personalized drills and cues for improvement.

### How does FastAI analyze sprint form?

Users upload a side-view video of their top-speed sprint. The app's AI model processes key frames to analyze form, identifying issues like over-striding or poor hip flexion.

### What kind of feedback does FastAI provide?

FastAI delivers personalized cues and drills targeting specific weaknesses identified in the analysis. It also provides quantitative data on joint angles and grades each analysis.

### Does FastAI have ads?

No, FastAI does not contain advertisements. The app is free to download and use, with optional in-app purchases for subscription plans.

### What are the subscription options for FastAI?

FastAI offers a monthly subscription for $9.99 and a yearly subscription for $49.99, providing access to premium features and ongoing analysis.

### What devices does FastAI support?

FastAI is available on iPhone and iPad devices, indicated by its support for iOS platforms.

### How often is FastAI updated?

The latest version of FastAI is 1.18, and it was last updated on June 12, 2025. This suggests a relatively active development cycle.

### What is the age rating for FastAI?

FastAI has an age rating of 4+, making it suitable for a wide range of users interested in sports analysis.

## Version history (last 5 releases)

### 1.18 — 2025-06-12

Updated onboarding flow. Bug fixes.

### 1.17 — 2025-05-30

Added pre-recorded video upload functionality. Bug fixes.

### 1.16 — 2025-05-27

Kinematic threshold updates, Added functionality to sprinting log.

### 1.13 — 2025-05-25

Added ground contact speed keypoint.

### 1.11 — 2025-05-24

Data caching fix

## Apps similar to FastAI

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sprint Start & Sprint Watch](https://appshunter.io/ios/app/sprint-start-and-sprint-watch/id1254746611) | 4.4 (74) | Free | Sports |
| [JAWKU](https://appshunter.io/ios/app/jawku/id1184083672) | 4.0 (244) | Free | Sports |
| [Sprint Pacer](https://appshunter.io/ios/app/sprint-pacer/id6740884555) | — | Free | Sports |
| [Sprint Timer - On Your Mark](https://appshunter.io/ios/app/sprint-timer-on-your-mark/id1624679242) | 4.7 (3) | Free | Sports |
| [Running & gait analysis - Ochy](https://appshunter.io/ios/app/running-and-gait-analysis-ochy/id1531481638) | 3.5 (6) | Free | Sports |
| [Perfect Stopwatch](https://appshunter.io/ios/app/perfect-stopwatch/id1598567322) | 4.6 (171) | Free | Sports |

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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 2026-06-10.*