Topography vs HK Traffic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Topography
This tool helps civil engineers, architects, and surveyors measure surface areas and convert coordinates. It allows users to calculate polygon areas, convert coordinates to UTM EGSA87 Datum, and export measurements in DXF, KML, or TXT formats via email.
- Convert coordinates to UTM EGSA87 Datum
- Calculate polygon area in square meters
- Export measurements in DXF format
- Export measurements in KML format
- Export measurements in TXT format
- Input coordinates manually
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The application is very useful to Civil Engineers, Architects, Surveyors, and those interested in measuring a surface area or converting its coordinates to UTM EGSA87. This tool enables users to: 1. Convert the coordinates (x,y) to UTM EGSA87 Datum 2. Calculate the area of a polygon in square meters (m2) 3. Send the above measurements by e-mail in [dxf] file format. The dxf file can be opened in a MAC or a PC by any drawing application like Autocad. 4. Send measurements by e-mail in [kml] file format. The kml file can be opened in a MAC or a PC or iPhone by GoogleEarth application. 5. Send measurements by e-mail in [TXT] file format. The text file contains coordinates either in EGSA87 Datum or Latitude and Longitude in decimal degrees or UTM coordinates. The measurements mentioned above can be provided not only by placing the iPhone in each border of a surface area, but also from distance (when users are on their bed or their sofa). Users may also have their final measurements by entering the coordinates either in EGSA87 Datum or Latitude and Longitude in decimal degrees.
HK Traffic
This app provides real-time traffic updates for Hong Kong, including road conditions, accidents, and jams. It features interactive maps, live camera feeds, and user-shared traffic news to help you navigate efficiently and find parking.
- Real-time traffic conditions
- Live road camera snapshots
- User-shared traffic news
- Interactive traffic map
- Parking availability map
- Vehicle maintenance reminders
- Journey time predictions
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HK Traffic is an application that provides real-time traffic conditions in Hong Kong. HK Traffic allows you to view traffic conditions in various regions of Hong Kong anytime, anywhere, including road conditions, traffic accidents, traffic jams, etc. In addition, HK Traffic also provides instant updates of traffic events, allowing you to keep abreast of the latest traffic conditions. Traffic situation: Traffic Snapshot: Traffic Snapshot provides snapshots of road cameras provided by the Transport Department, allowing you to check the traffic conditions in various areas of Hong Kong at any time. These camera snapshots are updated regularly to keep you up to date with the latest traffic information. Traffic News: Traffic News provides instant updates on traffic events, including traffic jams, traffic accidents and more. In addition to being able to grasp the traffic conditions in various regions of Hong Kong in real time, you can also interact with other users, share and view traffic news provided by other users. Through this function, you can have a more comprehensive understanding of the traffic conditions in Hong Kong and choose the best route. Traffic Map: Traffic Map is an interactive map that allows you to easily view traffic conditions in various areas of Hong Kong. Through this function, you can quickly understand the traffic conditions in any area and choose the best route. Parking Map: Parking Map lets you see nearby parking lots and provides real-time availability information. Through this function, you can easily find the nearest parking lot and choose the most convenient parking location. Practical functions: My Ride: My Ride can record your car wash fee, calculate fuel consumption, and remind car owners about insurance dates or due maintenance and other matters. Through this function, you can easily manage your vehicle and keep abreast of the maintenance status of the vehicle. Journey forecast: Journey forecast can make predictions based on your customized cross-sea tunnel and the fastest or shortest distance, and provide traffic snapshots along the road. Through this function, you can predict the time to reach your destination and choose the best route. Level Slope Meter: Level Slope Meter can help you measure the slope of the road surface, allowing you to drive more safely. Through this function, you can keep abreast of the slope of the road and choose the safest driving method. Interesting features: Meter Simulator: The taxi meter simulator can simulate the operation of a taxi meter while the user is driving, adding fun to driving. Whether you are a Hong Kong local or a tourist, HK Traffic is your must-have transportation tool. Download HK Traffic now to make your travel more convenient! ----- In the future, we will provide you with more and more comprehensive functions. If you have any comments, please email to support@linkingapp.com
Screenshots
Verdict
The clearest difference is price: HK Traffic at Free against Topography's $3.99. HK Traffic also leads on rating (4.8 vs 2.3) and update cadence (every 3 weeks vs every 2 months). Topography's advantage is ads (none vs shown) and review sentiment (59% vs 35%). On in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
HK Traffic is free to download; Topography costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HK Traffic holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: HK Traffic has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 59% of Topography's written reviews are positive against 35% of HK Traffic's, so the app with the better star average is not the one people write more warmly about.
Topography ships an update every 2 months, HK Traffic every 3 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Topography | HK Traffic |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.3 (3 ratings) | 4.8 (16 ratings) — better |
| Positive reviews | 58.6% of reviews — better | 34.7% of reviews |
| Number of ratings | 3 | 16 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.1 | 15.6 — better |
| Further details — not scored | ||
| Size | 2 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Georgios Graikousis | Chung Yeung Chan |
Customer experience
Topography
HK Traffic
In-app purchases
Topography
No in-app purchases
HK Traffic
No in-app purchases
Questions
Is Topography free?
Is HK Traffic free?
Which has better reviews, Topography or HK Traffic?
Do Topography or HK Traffic have ads?
Which is updated more often, Topography or HK Traffic?
Other comparisons
