computer science

PeakFinder

PeakFinder is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand PeakFinder rather than just read about it. In short: PeakFinder is a mobile app for identifying mountains and mountain peaks. The app generates a panoramic view based on the user's location and displays the names of visible mountains.

Key takeaways

PeakFinder belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PeakFinder to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PeakFinder from memory before moving on to harder problems.

Reference excerpt

PeakFinder is a mobile app for identifying mountains and mountain peaks. The app generates a panoramic view based on the user's location and displays the names of visible mountains. It is available for the Android and iOS operating systems. First released in 2010, the initial version covered the Alps and the western United States. As of 2026, the application includes data for more than one million peaks worldwide. The app was developed by Swiss software engineer Fabio Soldati. PeakFinder is a paid application. After purchase, it can be used indefinitely on devices associated with the same platform account, and updates are provided free of charge. The application does not display advertising. Since 2022, PeakFinder has also provided a publicly accessible web-based application programming interface (API) that allows third-party websites to generate mountain panoramas using its data and rendering system.

History According to developer Fabio Soldati, the idea for PeakFinder originated during a hiking trip in Switzerland in 2010. During a hike with his sister and brother-in-law, the couple had a disagreement over the name of a mountain peak. Although Soldati was not particularly knowledgeable about mountain names, he regarded the identification problem as an interesting technical challenge. After researching available geographic datasets and technologies, he developed the first version of the application in approximately six months. The application gained popularity with little formal marketing. Its visibility was reportedly enhanced when it was featured as an "App of the Week" on Apple's platform shortly after release.

Features and technology PeakFinder generates a 360-degree panorama of the surrounding landscape using digital elevation models and identifies visible mountain peaks. The application combines terrain data from multiple sources, including NASADEM, the Shuttle Radar Topography Mission (SRTM), and European LiDAR datasets. These data are supplemented with geographic information from OpenStreetMap, GeoNames, and other regional sources. The application is known for its minimalist visualization of terrain, which avoids colour shading and instead emphasizes contrast to improve visibility in bright sunlight. PeakFinder also supports augmented reality by overlaying mountain labels and terrain outlines on the smartphone camera view. In addition to mountain identification, the application displays the Sun's path for the selected date and can optionally show the Moon's path. Because the date can be adjusted manually, the feature can be used to determine the position of sunrise and sunset for specific locations and dates, making it useful for landscape photography and planning outdoor activities. PeakFinder can be used offline after downloading the required data for a selected region in advance.

Reception PeakFinder has been featured in numerous hiking, outdoor recreation, and mountaineering publications as a tool for mountain identification. In 2023, the German newspaper Die Zeit described the application as the "Shazam for mountains", referring to its ability to identify peaks in a manner analogous to music-recognition software. The application's ability to display solar and lunar paths for arbitrary dates has also led to its use in archaeoastronomy. In collaboration with researchers associated with the Archaeological Institute of the University of Basel, additional functions were developed to support archaeoastronomical analyses.

External links Official website

References

Illustrations

Worked examples

Example 1 — a first encounter with PeakFinder

Start with the simplest possible case. Write down what PeakFinder claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to PeakFinder before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about PeakFinder ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of PeakFinder

In research: PeakFinder appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses PeakFinder in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: PeakFinder is common in secondary-school and first-year university syllabi. It links to neighbouring topics Android (operating system) software, Augmented reality applications, Geographic information systems, so understanding it makes those chapters shorter.
In everyday life: Look for PeakFinder outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study PeakFinder in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PeakFinder means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain PeakFinder out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PeakFinder in simple terms?

PeakFinder is a mobile app for identifying mountains and mountain peaks. The app generates a panoramic view based on the user's location and displays the names of visible mountains.

Why does PeakFinder matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study PeakFinder?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on PeakFinder.