How to Build a Hiking Tracker App in SwiftUI

A Hiking Tracker app lets outdoor enthusiasts record GPS trails, track real-time elevation gain, and review rich post-hike stats — all stored privately on device. It's ideal for developers who want to combine CoreLocation, MapKit, and Swift Charts into a polished, subscription-powered iOS experience.

iOS 17+ · Xcode 16+ · SwiftUI Complexity: Advanced Updated: 2026-05-12

Prerequisites

Xcode 16 or later with an iOS 17+ simulator or physical device
Apple Developer account with location usage descriptions added to Info.plist
Basic familiarity with SwiftData, MapKit, and Swift Charts

1. Define the Trail data model with SwiftData

Create a @Model class that persists each hike's name, date, waypoints, and elevation samples directly on device using SwiftData.

import SwiftData
import CoreLocation

@Model
final class Trail {
    var name: String
    var date: Date
    var waypointLatitudes: [Double]
    var waypointLongitudes: [Double]
    var elevationSamples: [Double]   // metres

    init(name: String) {
        self.name = name
        self.date = .now
        self.waypointLatitudes = []
        self.waypointLongitudes = []
        self.elevationSamples = []
    }
}

2. Build the live map view with MapKit

Use SwiftUI's Map view to show the hiker's current position and overlay the growing recorded polyline in real time.

import SwiftUI
import MapKit

struct LiveMapView: View {
    @ObservedObject var recorder: TrailRecorder
    @State private var position: MapCameraPosition = .userLocation(fallback: .automatic)

    var body: some View {
        Map(position: $position) {
            UserAnnotation()
            if recorder.coordinates.count > 1 {
                MapPolyline(coordinates: recorder.coordinates)
                    .stroke(.orange, lineWidth: 3)
            }
        }
        .mapStyle(.hybrid(elevation: .realistic))
        .mapControls { MapCompass(); MapScaleView() }
    }
}

3. Record trail elevation with CoreLocation and Charts

Stream CLLocation updates through a recorder object, append altitude readings to the active trail, and plot an elevation profile with Swift Charts.

import Charts
import CoreLocation

struct ElevationChartView: View {
    let samples: [Double]

    var body: some View {
        Chart {
            ForEach(Array(samples.enumerated()), id: \.offset) { i, alt in
                AreaMark(
                    x: .value("Distance", i),
                    y: .value("Elevation (m)", alt)
                )
                .foregroundStyle(
                    .linearGradient(colors: [.green.opacity(0.7), .green.opacity(0.1)],
                                    startPoint: .top, endPoint: .bottom)
                )
            }
        }
        .chartYAxisLabel("Metres")
        .frame(height: 160)
    }
}

Common Pitfalls

Background location drains battery fast — request allowsBackgroundLocationUpdates only when recording is active and set pausesLocationUpdatesAutomatically = false carefully.
Elevation noise from GPS — raw altitude values spike; apply a simple rolling average or use verticalAccuracy to discard unreliable samples before storing.
Large polylines stall the UI — batch waypoint persistence to SwiftData every 10–20 points rather than on every didUpdateLocations callback.

Monetization with Subscriptions

A subscription model fits a Hiking Tracker perfectly — offer a free tier capped at five saved trails, then unlock unlimited trail history, offline map tiles, and detailed elevation stats behind a monthly or annual subscription using StoreKit 2. With Product.products(for:) and Transaction.currentEntitlements you can gate premium views in SwiftUI with just a handful of lines, and App Store Connect handles renewals, refunds, and family sharing automatically.

Ship Faster with Soarias

Wiring up CoreLocation permissions, SwiftData migrations, MapKit overlays, Swift Charts, and StoreKit subscriptions by hand can easily consume days of boilerplate work. Soarias scaffolds all of it from a single prompt — generating your data model, location manager, chart views, and StoreKit paywall in minutes so you can focus on the hiking experience instead of plumbing. Most developers report cutting their initial setup time from a full week down to an afternoon.

FAQ

Do I need an Apple Developer account to build this app?

You can build and run the app on a simulator or your own device without a paid account. However, to test background location updates on a real device, distribute via TestFlight, or publish to the App Store, you'll need an active Apple Developer Program membership ($99/year).

How do I submit my Hiking Tracker app to the App Store?

Archive your app in Xcode (Product → Archive), then upload it through the Organizer window to App Store Connect. Fill in your app's metadata, screenshots, and privacy nutrition labels — paying special attention to the location usage justification since Apple reviews location-based apps carefully — then submit for review. Soarias's built-in submission flow handles screenshots and metadata automatically.

Last reviewed: 2026-05-12 by the Soarias team.