# Crypto Portfolio Pie Chart UI for Mobile Apps > By Lawrence Arya, Founder & CEO of VP0. Published 2026-05-31, updated 2026-06-02. 4 min read. > Source: https://vp0.com/blogs/crypto-portfolio-pie-chart-ui-mobile Show the allocation, not the hype: a portfolio screen earns trust by being accurate, calm, and never asking for the keys. **TL;DR.** A crypto portfolio pie chart shows how holdings are allocated at a glance. Build it from a free VP0 design using Swift Charts for the donut, a clear legend with values and percentages, and a calm color system. Keep it read-only and key-safe: never ask for a seed phrase or private keys, pull prices from a reputable API, and label data as delayed if it is. Design for the volatile, all-red day too. A crypto portfolio pie chart answers one question fast: where is my money allocated? The short answer: build it from a free VP0 design with Swift Charts for the donut, a clear legend showing each holding's value and percentage, and a calm, accessible color system, while keeping the whole thing read-only and key-safe. The global crypto market has at times exceeded [$2](https://www.coingecko.com/) trillion per CoinGecko, so plenty of people want a clean tracker, but trust depends entirely on honest numbers and never touching their keys. ## What the portfolio screen must get right The chart is the headline, but the trust is in the details. Use a donut or pie that encodes allocation by share, with a legend that lists each asset, its value, and its percentage, sorted largest first. Pair it with the total balance and a clear 24-hour change. Choose colors that stay distinguishable for color-blind users and do not rely on red and green alone, add labels or icons. Critically, show the data's provenance: if prices are delayed, say so. Apple's [Human Interface Guidelines on charts](https://developer.apple.com/design/human-interface-guidelines/charts) stress legible, honest data visualization, which matters double for money. ## Build it from a free design, key-safe VP0 is a free iOS design library for AI builders. Pick a dashboard or chart design, copy its link, and have Cursor or Claude Code rebuild it in SwiftUI using [Swift Charts](https://developer.apple.com/documentation/charts) for the allocation donut. Pull live prices from a reputable market API and compute allocation locally. The non-negotiable rule: this is a read-only tracker. Never ask for or store a seed phrase or private keys, if you let users connect a wallet, use a read-only address or a standard like WalletConnect, and never custody funds yourself. That keeps you out of the most dangerous territory in crypto apps. For the wallet-connection pattern done safely, see [MetaMask mobile connect wallet modal UI](/blogs/metamask-mobile-connect-wallet-modal-ui/), and for secure money-screen patterns generally, see [SwiftUI banking app template](/blogs/swiftui-banking-app-template/). ## Portfolio screen building blocks Here is what each part should communicate. | Part | Shows | Get it right | |---|---|---| | Donut chart | Allocation by share | Swift Charts, accessible colors | | Legend | Asset, value, percent | Sorted largest first | | Total balance | Net worth and 24h change | Honest, with provenance | | Data note | Delayed or live | Never imply false precision | | Empty state | No holdings yet | Guide the first add | ## Common mistakes The first and worst mistake is asking for a seed phrase or private keys, never do this; legitimate trackers do not need them. The second is red and green as the only signal, which fails color-blind users. The third is implying real-time precision when prices are delayed. The fourth is designing only the green day; a portfolio that is all down needs to stay calm and legible, not alarming. The fifth is a cramped legend with no values or percentages, which defeats the point of the chart. ## A worked example Say a user holds four assets. Your VP0-built screen shows a Swift Charts donut with four accessible colors, a legend listing each asset with its dollar value and percentage, the total balance, and a 24-hour change. A small note reads "Prices delayed up to 1 minute." There is no field anywhere for keys or seed phrases; connecting a wallet uses a read-only address. On a down day, the same calm layout simply shows the lower numbers. For the data-glance surface that pairs with it, see [iOS lock screen widget UI template free](/blogs/ios-lock-screen-widget-ui-template-free/), and for a different swipe-driven pattern, see [flashcard swipe UI like Anki Quizlet](/blogs/flashcard-swipe-ui-like-anki-quizlet/). ## Key takeaways - A crypto portfolio chart should show allocation clearly and honestly. - Build it from a free VP0 design with Swift Charts and an accessible color system. - Keep it read-only and key-safe; never ask for a seed phrase or private keys. - Show data provenance and design the all-down day, not just the green one. - Give the legend real values and percentages, sorted largest first. ## Frequently asked questions How do I build a crypto portfolio pie chart on iOS? Start from a free VP0 dashboard design, rebuild it in SwiftUI with Swift Charts for the allocation donut, and add a legend with each asset's value and percentage, pulling prices from a reputable API. Should a portfolio app ask for my seed phrase? No, never. A legitimate read-only tracker does not need your seed phrase or private keys. Any app asking for them is a serious red flag. Use a read-only address or WalletConnect instead. How do I make the chart accessible? Do not rely on red and green alone. Use distinguishable colors plus labels or icons, give the legend real numbers, and ensure text meets contrast guidelines for color-blind and low-vision users. What about a down market day? Design for it. Keep the same calm, legible layout and simply show the lower values and negative change, rather than turning the screen into an alarming wall of red. ## Frequently asked questions ### How do I build a crypto portfolio pie chart on iOS? Start from a free VP0 dashboard design, rebuild it in SwiftUI with Swift Charts for the allocation donut, and add a legend with each asset's value and percentage, pulling prices from a reputable API. ### Should a portfolio app ask for my seed phrase? No, never. A legitimate read-only tracker does not need your seed phrase or private keys. Any app asking for them is a serious red flag. Use a read-only address or WalletConnect instead. ### How do I make the chart accessible? Do not rely on red and green alone. Use distinguishable colors plus labels or icons, give the legend real numbers, and ensure text meets contrast guidelines for color-blind and low-vision users. ### What about a down market day? Design for it. Keep the same calm, legible layout and simply show the lower values and negative change, rather than turning the screen into an alarming wall of red. --- *Published on the [VP0 Journal](https://vp0.com/blogs). Free to read, index and cite with attribution.*