Peakline: Hong Kong 3D Map
Hiking trails, GPX & flyovers
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Explore Hong Kong in first person, compose with an adjustable lens, discover the offline star map, and share your route as an image.
Peakline puts all of Hong Kong on your iPhone in 3D. Every hill, street and harbour is drawn from the Government's own survey data. Open your GPX and the trail lies on the hills it climbs, then turn it into a flight over Hong Kong.
THE MAP
• A clean, stylized 3D model of the whole territory: buildings, flyovers, terrain, roads and their markings
• From Lantau's peaks to Sai Kung's coast: Yau Tsim Mong comes with the app, and the detailed Hong Kong map is an optional download, recommended over Wi-Fi, and works offline once downloaded
• Sun position, sunlight, moon phases and shadows simulated for your chosen date and time
• After sunset, windows light up one by one, street lights glow along the roads, and thousands of stars and five planets come out where they really are
• Your place on the map and the way you face, used only on your iPhone
TRAILS
• Open any GPX file — from your watch, a race or a friend's WhatsApp — by sharing it to Peakline
• The elevation and climb along the way, and what's underfoot: asphalt, steps, dirt
• Add a race's checkpoints on the elevation, rename them, and take them with the GPX when you export it
PHOTOGRAPHY AND SHARING
• Long-press for a ground, rooftop or window view, then move and look around using on-screen controls
• Compose with an 8–1200 mm equivalent lens and optional Sun/Moon direction guides
• Explore the offline star map for your chosen date and time; simulated atmosphere and light pollution are illustrative, not live weather or a guarantee of what you will see
• Save and share a camera reference photo with its address, coordinates, lens, viewing angles and date/time
VIDEO
• Turn your trail into a flyover in a few taps: the camera follows you up every ridge while your distance and climb count up
• At dawn, at golden hour or under the stars
• Free trial: one HD (1080p) video and three 720p videos, with the Peakline mark
PEAKLINE PRO AND PURCHASES
• Pro (monthly or yearly): unlimited HD videos with no watermark. The yearly plan starts with 7 days free
• Or buy a single HD video, or a pass for one day or three
• No account to make. Purchases stay with your Apple ID: restore them in Settings on a new iPhone
• Pro renews automatically unless cancelled in your App Store subscriptions at least 24 hours before the end of the current period
PRIVACY
No ads, no analytics, no tracking. Route processing and video creation happen on your iPhone. You choose whether to share or open a location in an external map.
PLEASE NOTE
Peakline is for planning, reliving and sharing. Map data can be out of date, so don't rely on it alone where your safety depends on it: check the weather, carry a proper map and tell someone your route.
Requires an iPhone with iOS 26 or later.
Map data © HKSAR Government (Lands Department, through the CSDI Portal and DATA.GOV.HK)
Paths © OpenStreetMap contributors
Terms of Use: https://chungtau.github.io/peakline-site/terms/
Privacy Policy: https://chungtau.github.io/peakline-site/privacy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Explore Hong Kong from a new perspective.
• Long-press the map to enter a ground, rooftop or window view, with on-screen controls to move and look around.
• Frame your view with an 8–1200 mm equivalent lens, and show directions to the Sun and Moon.
• Explore an offline star map and simulated sunlight, moonlight and regional skyglow for your selected date and time.
• Save and share camera reference photos with the address, coordinates and composition details.
• Choose a date and fine-tune the time by the minute.
• New guidance for photography controls and Wi-Fi download prompts.
• Improves camera controls, date selection and card animations; fixes delayed toggle taps and clipped sunset shadows.
The developer, Siu Chung Chan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Siu Chung Chan
- Size
- Up to 155.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Three days' pass $1.99
- A day's pass $1.99
- Pro - yearly $17.99
- Pro - monthly $2.99
- One HD video $0.99
- Copyright
- © 2026 Siu Chung Chan