Best Fit Firearm · AI Hand Scan

Discover Your Perfect Fit With AI-Powered Precision

It's like having an expert in your pocket. Scan your hand and get personalized gun recommendations using AI — tailored to your grip length, trigger reach, and unique hand profile.

  • Quick Fit & Custom Fit
  • iPhone & iPad
  • 6,000+ Handguns
  • 130+ Manufacturers
4.4★
App Store
6,000+
Handguns
130+
Brands

One app to scan your hand and find your perfect firearm fit — built and shipped by Exarth.

4.4★App Store rating
6,000+Handguns
130+Manufacturers
iOSiPhone & iPad

Overview

A complete AI fit platform, from scan to match

Quick Fit and Custom Fit hand scanning, AI analysis, personalized recommendations, and firearm exploration — on iPhone and iPad in one seamless experience that turns a simple coin-reference scan into your ideal handgun match.

  • Coin-reference scan
  • AI best-fit match
  • 6,000+ handguns
  1. 1Scan your hand with a coin for reference.
  2. 2Let AI analyze grip length & trigger reach.
  3. 3Find your fit across 6,000+ handguns.
View on the App Store
Fit toolkit
AI hand scanningPlace a coin in your palm and let AI capture grip length, trigger reach & hand dimensions.
Personalized matchingTailored handgun suggestions from 6,000+ models matched to your unique hand profile.
130+ manufacturersExplore a comprehensive catalog, compare specs, and save favorites with confidence.
Challenge & solution

From guesswork to perfect fit

AI

Precise hand scanning

6,000+

Handguns to match

The challenge

The Challenge

Finding the perfect firearm fit has always been a challenge. Traditional methods rely on trial and error, making it difficult to find a gun that matches your unique hand dimensions. Without proper fit, comfort, precision, and safety are compromised.

  • Trial-and-error firearm shopping
  • Poor fit affecting comfort & safety
  • No data-driven fit guidance
Fit by feelGuessworkNo scan dataWrong size

Fitting

Trial & error

Grip

Mismatch

Methods

Old & manual

  • 0Scan data
  • HighMismatch risk
  • ManualSizing

Traditional methods · No precise fit data

The solution

The Solution

GR1P AI revolutionizes how shooters find their perfect fit. Using advanced AI and a simple coin-reference hand scan, the app captures grip length, trigger reach, and hand dimensions to recommend the ideal handgun from over 6,000 models across 130+ manufacturers.

  • AI-powered hand measurement
  • Personalized firearm recommendations
  • 6,000+ handguns · 130+ manufacturers
GR1POne app
Hand ScanAI MatchExplorePerfect Fit

One app · Scan to perfect fit

GR1P AI · Key features

Your perfect fit, powered by AI

From a simple coin-reference hand scan to personalized firearm recommendations — GR1P AI makes finding the right handgun fit simple, accurate, and data-driven.

01/06 features

Tap a feature to preview it

Technology

Built on a modern, proven stack

A scalable, type-safe foundation powering GR1P AI — from coin-reference hand scanning and AI matching to a 6,000+ handgun catalog and cloud infrastructure.

Chosen for

Speed

Optimised for fast, responsive apps.

Security

Hardened with best-practice defaults.

Scalability

Grows with your users and team.

Maintainability

Clean, documented, easy to extend.

01

Mobile

3 tools

Native iPhone & iPad experience.

  • iOS
  • Swift
  • iPadOS

One codebase scaling from iPhone to iPad.

02

Scanning & AI

3 tools

Coin-reference scan & best-fit matching.

  • Vision AI
  • ARKit
  • ML matching

Vision-based hand scans with AI fit matching.

03

Backend & Data

3 tools

Catalog, accounts & subscriptions.

  • Node.js
  • PostgreSQL
  • StoreKit

Type-safe services backing 6,000+ handguns.

04

Cloud & DevOps

3 tools

Scalable hosting & automated delivery.

  • AWS
  • Docker
  • CI/CD

Auto-scaling cloud infra with CI/CD pipelines.

GR1P AI

Key Mobile Screens

Core GR1P AI flows — onboarding, coin-reference hand scanning, AI recommendations, favorites, and Ultimate Access on iPhone & iPad.

Philosophy

UX & Design Approach

A precision-first design philosophy that prioritizes accuracy, simplicity, and user confidence — combining AI hand scanning with a comprehensive firearm database.

PrecisionAccuracySimplicityMobile-first
Design pillars
04
Accessibility
AA
App Store
4.4★
Audience
Shooters & buyers
Platforms
iPhone & iPad
Catalog
6,000+ handguns
Accessibility
WCAG AA

Every screen is shaped around real shooters — precision first, a simple guided scan, and fit recommendations you can trust from one quick coin scan.

  1. Pillar 01

    AI-Powered Precision

    AIPinpoint scans

    Advanced hand scanning technology analyzes your grip length, trigger reach, and hand dimensions with pinpoint accuracy.

    Accurate fit analysis from one quick coin scan.

  2. Pillar 02

    Simple 4-Step Process

    4Guided steps

    From hand scan to perfect-fit recommendation, the journey is straightforward and user-friendly.

    Anyone reaches their fit in four clear steps.

  3. Pillar 03

    Comprehensive Database

    130+Manufacturers

    Explore over 6,000 handguns from 130+ top manufacturers with detailed specifications and fit analysis.

    Confident comparisons across the full catalog.

  4. Pillar 04

    Privacy & Safety First

    100%Your data

    Your data belongs to you. We prioritize privacy and safety above all else, ensuring your information is always protected.

    Scan data stays private and protected, always.

Tokens

Design System

A precision-focused visual language — blue primary and yellow accent on confident dark surfaces, matching gr1p.ai across iPhone & iPad.

4Colors
6Type sizes
5Spacing
6Radii + shadows
4Easings
8Icons
4Breakpoints

Color palette4

Typography6

Heading

Space Grotesk 800 · 32px

Subheading

Inter 500 · 20px

Body text for product listings, collections, and guides.

Inter 400 · 16px

Caption labels

Inter 400 · 14px

Small helper text

Inter 400 · 12px

Bold heading

Space Grotesk 700 · 18px

Components4

Add to cart Wishlist
Organic In stockHeirloom
DefaultHoverActiveOff

Spacing scale5

XS4px
SM8px
MD16px
LG24px
XL32px

Border radius3

8px lg

12px xl

16px 2xl

Shadows3

shadow-sm

shadow-md

shadow-lg

Motion & easing4

StandardMost transitions

cubic-bezier(.4,0,.2,1)

DecelerateEnter / reveal

cubic-bezier(0,0,.2,1)

AccelerateExit / dismiss

cubic-bezier(.4,0,1,1)

SpringPlayful emphasis

cubic-bezier(.22,1,.36,1)