App builder

Your own crypto charts app
with every level and note saved.

Describe the pairs and timeframes you study and Netiva’s AI builds a web app for candlestick charts from your market-data API, saved setups, drawn levels and research notes — with code you own.

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Starter prompt

Build a crypto charts web app for a small research community. Pull OHLCV candles from my market-data provider’s API for pairs such as BTC/USD and ETH/BTC, with timeframes from 15 minutes to 1 week, candle or line style and log scale. Members sign in and save chart setups with indicators such as SMA 50 and RSI 14. Levels, trend lines and ranges form one shared layer per pair, saved as time and price points so they show at every timeframe and filter by member. Each research note names its author, links to a setup and records its last candle time, thesis status, review date and the author’s position.

Build it in Netiva Paste the prompt into a new workspace and adjust it to your business.
Overview

Who this crypto charts app is for

Crypto analysis rarely lives in one place. The chart sits on a charting site, the levels you drew are locked inside that account, the reasoning is in a doc and last month’s screenshot no longer matches any live chart. When a call plays out or fails, no one can see the chart as it looked then. A crypto charts app built with Netiva keeps pairs, saved setups, drawn levels and research notes together, pulls candles from the market-data API you choose and pins each note to the last candle it used, so readers see the chart you saw.

Key features

What your crypto charts app can do

  • Candles at every timeframe

    Charts draw open, high, low, close and volume from the market-data API you choose, with your key stored securely. Switch a pair from 15-minute to weekly candles without leaving the page.

    • Candlestick, OHLC bar and line styles with a volume pane
    • Linear or log price scale for multi-year ranges
    • Recent candles cached, where your plan allows, to stay within the rate limit
    • Times shown in UTC or in the viewer’s time zone

  • Saved chart setups

    A setup stores the pair, timeframe, style, indicators and range, so a chart you built last week reopens exactly as you left it. Each member signs in and sees their own setups.

    • Indicator settings per setup, such as SMA 50 or RSI 14
    • Rolling ranges that follow the latest candle, or fixed dates
    • Setups filtered by pair and timeframe in saved views
    • A private or public switch on every setup

  • Levels, lines and ranges

    Drawings are saved as records with time and price points instead of screen positions. They form one shared layer per pair, so a support level marked on the daily chart also shows on the hourly one.

    • Horizontal levels, trend lines, range boxes and text labels
    • Labels such as weekly open or prior range high
    • One layer per pair, with each mark tagged by the member who drew it
    • Marks listed, filtered by member and corrected in the spreadsheet-like grid

  • Research notes with review dates

    Each note is tied to a setup and records when its data ends, a thesis status and a date to revisit it. Published notes get their own pages, and authors get an email when a review comes due.

    • Draft, published, under review, invalidated and played-out statuses
    • Public pages that draw the chart only up to the note’s data time
    • A position disclosure shown on every public note
    • A weekly email listing the notes due for review
Data model

The collections behind it

Netiva keeps your records in built-in collections. Here’s a starting structure — the agent adapts it to your prompt, and you can change it any time.

Markets

Every pair you chart, mapped to the ID your data provider expects.

  • Pair (required) BTC/USD, ETH/BTC, SOL/USDT… Text
  • Base asset (required) Text
  • Quote currency (required) USD, USDT, EUR, BTC… Text
  • Provider symbol (required) The pair or instrument ID your market-data API uses Text
  • Price source (required) Aggregated index or a single venue; prices differ between the two Text
  • Price decimals Decimal places for axis labels and level prices Number
  • Coverage notes First candle available, known gaps, missing intervals Paragraph

Chart setups

A saved chart: pair, timeframe, style, indicators and range, reopened from its own link.

  • Title (required) Text
  • Market (required) Relation to Markets
  • Timeframe (required) 15m, 1h, 4h, 1D or 1W Text
  • Style (required) Candles, OHLC bars or line, on a linear or log scale Text
  • Indicators SMA 50, EMA 200, RSI 14, Bollinger 20/2… Text
  • Range Rolling, such as the last 200 candles, or fixed start and end dates Text
  • Owner (required) Filled in from the signed-in member Text
  • Visibility (required) Private or public Text

Annotations

One shared layer of levels, trend lines and ranges per pair, stored as time and price points.

  • Market (required) Puts the mark in this pair’s shared layer, at every timeframe Relation to Markets
  • Kind (required) Horizontal level, trend line, range box or text label Text
  • Start time (required) Stored in UTC Date & time
  • Start price (required) Number
  • End time Trend lines and range boxes only Date & time
  • End price Trend lines and range boxes only Number
  • Label Weekly open, prior range high… Text
  • Drawn by (required) Filled in from the signed-in member; the layer filters by member Text

Research notes

Written analysis tied to a chart, with a thesis status and a date to check it again.

  • Title (required) Text
  • Setup (required) Gives the note its pair, timeframe and chart Relation to Chart setups
  • Author (required) Filled in from the signed-in member Text
  • Body (required) The thesis, what would invalidate it and the levels that matter HTML
  • Data as of (required) Close time of the last candle the author looked at Date & time
  • Status (required) Draft, published, under review, played out or invalidated; drafts stay private Text
  • Review on Puts the note in the author’s review email Date
  • Position disclosure (required) No position, long, short or paid coverage; shown on public pages Text

Required field. Types are Netiva collection field types.

Screens

Pages and screens to start with

A typical first version. Ask the agent for more, or annotate the preview to change any of them.

  • Chart workspace

    The full chart for one setup: switch timeframe, toggle indicators, draw levels and lines, then save the changes back to the setup.

    Signed-in users

  • My setups

    Your saved setups as cards showing pair, timeframe and style, filtered by pair or timeframe, with a button to start a new chart.

    Signed-in users

  • Pair levels

    The shared layer for one pair: every level, trend line and range with its label and who drew it, filtered to your own marks or one member’s, beside that pair’s notes.

    Signed-in users

  • My notes

    All of your notes by status, with a filter for the reviews now due and a button to start a new note from any of your setups.

    Signed-in users

  • Public note

    A published note with its chart drawn up to the data-as-of time, the author’s marks, a position disclosure and a not-investment-advice line.

    Public

  • Examples library

    Published notes grouped by thesis status — open, played out or invalidated — so students and new members can study annotated charts beside what followed.

    Public
How it works

From prompt to a live crypto charts app

  1. Name your pairs and data source

    Tell Netiva which pairs and timeframes you chart and which market-data provider you use. The agent drafts collections for markets, setups, annotations and notes, and your API key is stored securely.

  2. Get the first chart right

    Open a setup in the live preview and compare its candles with your provider’s own chart for the same pair. Annotate anything off, such as a time zone shift or a missing volume pane, and the agent fixes it.

  3. Bring over your levels and notes

    Enter the levels and past notes you already keep in the collection grid, or ask the collection assistant to draft records and tidy dates and tickers across many rows at once.

  4. Open it to members

    Publish in one click, invite members to sign in and turn on the weekly review email. Each edit is checkpointed, so an indicator change that breaks a chart can be undone by rolling back.

Why Netiva

Netiva vs a traditional build

Building a crypto charts app with Netiva compared with a traditional build
Criterion With Netiva Traditional build
Chart annotations Levels and lines saved as time and price points that redraw on fresh candles at any timeframe Screenshots marked up in an image editor and pasted into a doc that goes stale
Publishing analysis Notes and their charts on public pages you publish, with a disclosure line and a review date A share link from a charting site plus a separate write-up somewhere else
Getting started Describe what you need in chat and watch it take shape in a live preview Hire developers, or stitch together templates, plugins and a hosting plan
Content and data Built-in collections with nine field types, bound straight to your pages Set up and connect a separate database or CMS
Making changes Ask the agent; every change is checkpointed and reversible File a ticket, wait for a sprint, redeploy
Hosting and domain Global hosting and automatic SSL; connect a custom domain from the Starter plan Buy hosting, then install and renew SSL certificates yourself
Code ownership Clean production code you own and can export Locked into a template, plugin or agency setup
Examples

Ways teams use it

  • An independent crypto analyst

    One setup per pair and timeframe holds the indicators the analyst relies on. Each note records its data-as-of time and a review date, and the Monday email lists theses that are due, so invalidated calls stay on record instead of quietly disappearing.

  • An instructor teaching market structure

    Annotated examples are pinned to fixed date ranges and published to one page, so every student opens the same candles the class discussed. Two instructors edit the app together in one workspace and roll back any change that breaks a chart.

  • A research community of a few hundred members

    Members sign in and keep their own setups and notes, while each pair’s levels sit in one shared layer that anyone can filter down to a single member. A note goes public only when its author marks it published, with that author’s position shown beside it.

Good to know

Before you build

  • Bring your own market data

    Netiva doesn’t supply prices. Pick a provider that covers your pairs, intervals and history. Some have no 4-hour candles, and many cap how many candles one request returns, so long ranges need several calls and a cache.

  • Check the display license

    Market-data plans often restrict public display, require a credit line or limit how long you may cache candles and whether you may pass them on. Confirm all three before a chart leaves the signed-in area and before you turn caching on.

  • Opinion, clearly disclosed

    Label public notes as education or opinion and show each author’s position. US law requires anyone paid to promote a crypto asset security to disclose the payment, and the UK has regulated cryptoasset promotions since 8 October 2023. Get legal review before selling signals.

  • Daily candles depend on the cut-off

    Crypto trades around the clock, so there’s no official daily close. Many providers start each day at 00:00 UTC, some let you pick a time zone and venues quote different prices. Record each pair’s source and state the cut-off on public pages.

Compliance note

Netiva builds the charting web app only. It doesn’t supply prices, mine, hold or move funds, place trades or give investment advice. Candles come from the market-data provider you choose, under that provider’s license. Notes published through the app are their authors’ opinions, not recommendations. If you plan to sell trade signals, manage money for others or accept payment to cover a coin, get legal review in each country you publish to.

FAQ

Questions about building a crypto charts app

Where does a crypto charts app get its candle data?

From the market-data API you connect, with your key stored securely. The app requests open, high, low, close and volume for each pair and interval, and caches recent candles, where your plan allows storing them, so repeat views don’t burn through your rate limit. Netiva doesn’t supply prices, so how far back your charts go and which smaller tokens they cover depend on your provider’s plan.

Can I chart 4-hour candles if my provider doesn’t offer them?

Yes, as long as it offers hourly candles. Ask the agent to combine each block of four: the open of the first candle, the highest high, the lowest low, the close of the last one and the total volume. Aligning the blocks to 00:00 UTC keeps them in step with 4-hour charts from providers that use UTC.

Why doesn’t my daily candle match another charting site?

Crypto markets never close, so each data source decides when a day begins, and many use 00:00 UTC. Sources also differ in which venues they include, so the open, high, low and close can all shift. Store each pair’s price source in the app and state the daily cut-off on public pages so readers compare like with like.

Do drawn levels stay in place when I switch timeframes?

Yes. Each level, trend line or range is saved as time and price points, not screen positions, so the app redraws it correctly on a 15-minute chart or a weekly one. Marks belong to the pair rather than a single setup, so a support level you drew on the daily BTC/USD chart also appears on your hourly setup. The layer is shared, so filter it to your own marks or one member’s.

Can I publish charts and research notes for anyone to read?

Yes. When an author marks a note published, it gets a public page showing the chart up to its data-as-of time, the author’s marks and a position disclosure, while setups stay private unless their owner makes them public. Check that your data plan allows public display. You can build on the free plan; your own domain needs the Starter plan or higher.

Can I add RSI, moving averages or Bollinger Bands?

Yes. Ask the agent for them, and each setup stores its own settings. Common defaults are a 14-period RSI and Bollinger Bands two standard deviations either side of a 20-period moving average. The formulas live in clean code you own, so you or a reviewer can read them, change them in the editor or export the whole app.

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Drafted with AI assistance from Netiva’s product pages and reviewed by the Netiva team. Example data models, screens and prompts are illustrative starting points, not customer projects.

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