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Leaflet for Swift&Algorithm

by 雷 戴

  • Developer Tools
  • Free
View on the App Store
Rating
0.0
0 ratings
Last update
Sep 25, 2026
Version 1.6.9
Size
56 MB
Category
Developer Tools
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

Leaflet helps you learn Swift/SwiftUI and Data Structure/Algorithms better.

Leaflet has four main functions:

【1】Algorithm Animation Visualization
Through exquisite and intuitive animation demos, abstract algorithms and data structures are made visual — every step of execution is clearly visible. This is the core highlight of Leaflet.

  • Animation Demos: Carefully selected classic algorithms (sorting, searching, graph algorithms, dynamic programming, recursion, etc.) built with SwiftUI + Combine for smooth animations that make algorithm execution crystal clear.
  • Interactive Playback: Support play, pause, step forward / step backward, and adjustable playback speed — control your learning pace freely.
  • Data Structure Visualization: Arrays, linked lists, stacks, queues, trees, graphs and other data structures are presented graphically; insert, delete, and traverse operations are intuitive at a glance.
  • Synchronized Code View: Animation demos are displayed alongside the corresponding Swift source code, letting you learn code while watching the animation — more efficient learning.
  • Complexity Analysis: Visually shows the time / space complexity trends of algorithms, helping you build performance-analysis thinking.

Learning algorithms is no longer dry code reading, but a vivid visual experience — every algorithm becomes something you can "see and touch".

【2】Swift Tutorial

  • Swift one-hour micro class, quickly master the core knowledge points of Swift grammar
  • Swift5 complete tutorial covering all language features from beginner to advanced
  • Swift Code Style Guide for writing more standardized code
  • Swift design pattern practice

【3】Swift + SwiftUI + Combine
SwiftUI's declarative UI paired with Combine's functional reactive framework — simple to learn, high-performance, and reliable, enabling developers to quickly build elegant applications.

【4】Algorithm Solutions
Curated representative algorithm problems implemented in Swift, covering data structures and algorithm analysis to help you master algorithm complexity and performance analysis.

Part of the application is based on the open source protocol from the following open source libraries, Gratitude:
https://github.com/raywenderlich/swift-algorithm-club , Algorithms and data structures in Swift, with explanations!
https://github.com/andyRon/swift-algorithm-club-cn, swift-algorithm-club's translation. Learn algorithms and data structures using Swift.

What’s new

Release notes for the latest version, as written by the developer.

v1.6.9

[ + ] Search Improve
[ - ] Fix Search Algorithm Not Working

Rank history

Daily position in the Guinea-Bissau charts. #1 is at the top.

Best rank
#2
Current rank
#2
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

53/100

Not flagged as small & simple

  • Developer size0% · 25

    Developer: 6 apps on the charts

  • Audience size– · 20

    No data, weight redistributed

  • App size60% · 10

    Size: 56 MB

  • Price model80% · 15

    Price model: free with in-app purchases

  • Demand proof80% · 30

    Best rank #2, 4 countries

An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2

How the score works

Version history

  • 1.6.9LatestReleased Sep 25, 2026