Full Feature List

Everything Graph Plotter can do

A professional desktop charting app for analysts, researchers, and data teams. Seven chart types, powerful analytics, and complete data privacy, all from your Excel files.

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Seven Chart Types

From everyday reporting to quantitative finance: one tool covers everything.

Free

Line Chart

  • ✓Continuous lines with point markers
  • ✓Linear regression trendline overlay
  • ✓5-period moving average + value labels
  • ✓Value labels per data point (0–6 decimal places)
  • ✓Month boundary markers for time-series
  • ✓Anomaly detection with % deviation Pro
Basic

Scatter Plot

  • ✓Point cloud with optional connecting lines
  • ✓Trendline and moving average overlays
  • ✓Multi-series comparison support
  • ✓Correlation and distribution analysis
  • ✓Value labels and anomaly detection Pro
Basic

Bar Chart

  • ✓Single-series and multi-series side-by-side
  • ✓Value labels on top of each bar
  • ✓Trendline overlay
  • ✓Totals summary box
  • ✓Custom axis labels and legend names
Basic

Pie Chart

  • ✓Proportional slice visualization
  • ✓Percentage and value labels per slice
  • ✓Custom legend labels
  • ✓Automatic negative value validation
  • ✓Totals summary box
Pro

Histogram

  • ✓Automatic bin sizing, no manual tuning
  • ✓Frequency distribution analysis
  • ✓Single numeric column as input
  • ✓Spot skew, outliers, and bimodal distributions
  • ✓Works with any numeric Excel column
Pro

Gantt Chart

  • ✓Code mode: M1–M52, D1–D365, Y1–Y100
  • ✓Date mode: YYYY-MM-DD format
  • ✓Auto milestone detection (single-point tasks)
  • ✓Smart axis scaling (1, 3, or 6-unit steps)
  • ✓Requires Task, Start, and End columns
Pro

Efficient Frontier

Portfolio optimization built into your charting tool. The only desktop chart maker that computes the full Efficient Frontier directly from your Excel returns data.

✓8,000 random portfolio simulations
✓Risk-return scatter cloud (all portfolios)
✓Efficient frontier curve overlay
✓Minimum variance portfolio marker
✓Maximum Sharpe ratio portfolio marker
✓Handles missing data (auto-filters assets with >40% gaps)
✓Requires only asset return columns in Excel
✓No Python, no R, no external tools

Analytics & Overlays

Add statistical context to any chart with a single toggle.

Anomaly Detection

Pro

Set a deviation threshold (0–100%) and Graph Plotter automatically highlights every data point that deviates from the mean. Each flagged point shows its percentage deviation inline.

✓Percentage-based threshold control
✓Highlighted outlier points in red
✓Inline % deviation labels per anomaly
✓Great for QC, performance monitoring, fraud spotting

Trendlines

Basic

Linear regression overlay on any line, scatter, or bar chart. Shows the underlying direction of your data independent of noise.

✓Linear regression best-fit line
✓Available on Line, Scatter, and Bar charts
✓Toggle on/off without re-plotting

Moving Average

Basic

5-period rolling average overlaid on your data series. Smooths out volatility to reveal underlying trends in time-series data.

✓5-period rolling average
✓Optional value labels on each MA point
✓Toggle independently of trendline

Month Markers

Basic

Automatic vertical marker lines placed at month boundaries. Detects month names in your axis labels, no manual setup required.

✓Auto-detects month names in axis labels
✓Vertical boundary lines with month names
✓Useful for weekly data spanning multiple months

Totals Box

Basic

A summary box in the chart corner showing the total or sum of plotted values. One toggle, no manual calculations.

Value Labels

Free

Formatted numeric labels on every data point. Control decimal precision from 0 to 6 places, applied consistently across the whole chart.

Flexible Data Import

Load data the way it actually lives: in spreadsheets, across sheets, in complex layouts.

Supported File Formats

.xlsx .xlsm .xls Excel workbooks
.csv Comma-separated values
.ods OpenDocument Spreadsheet

Column headers auto-detected. No template required.

Multi-Sheet Support

  • ✓Browse all worksheets in a workbook from a dropdown
  • ✓Switch sheets without re-opening the file
  • ✓Auto-detects week-numbered sheets (W1–W52, Week 01, WK_5, wk_01)
  • ✓Plot across multiple sheets simultaneously using the Select Data dialog
  • ✓Month boundary markers derived automatically from week numbers

Data Preview

Basic

A full spreadsheet inspector built into the app. Verify raw values, column headers, and data types before you plot, no switching between windows.

  • ✓View the raw imported data in a table
  • ✓Inspect all columns and their values
  • ✓Confirm your data loaded correctly before plotting

Select Data Dialog

Basic

A visual interface for complex data selection across sheets and rows. Three modes:

Across Sheets

Select 1–3 cells from multiple week-sheets at once. Auto-detects W1/W2 sheet naming.

Row Series

Plot one row's data across N columns. Great for comparing periods in the same row.

Row + Column

Select a specific row and value column from any sheet for precise control.

Basic & Pro

Save your analysis.
Reload it anytime.

Save your entire analysis state as a .gpplot.json file and reload it with one click. Every setting, selection, and label is preserved exactly as you left it.

✓

Full analysis state saved

File path, sheet, columns, chart type, all toggles, custom titles, labels, and decimal settings

✓

Select Data state preserved

Complex multi-sheet selections are fully saved and restored

✓

Point annotations included Pro

Text notes added to individual data points are saved with the project

✓

Reproducible reports

Update your Excel data, reload the project, re-plot. Same chart, fresh numbers.

portfolio_analysis.gpplot.json
{
"chart_type": "efficient_frontier",
"file_path": "returns_Q4.xlsx",
"sheet": "Returns",
"title": "Q4 Portfolio Optimization",
"show_trendline": false,
"show_values": true,
"decimals": 2,
"point_notes": ["Max Sharpe: consider rebalancing"]
}

Export

High-resolution PNG output, ready for reports, presentations, and client documents.

220 DPI Resolution

Print-quality output. Sharp in PowerPoint, Word, client memos, and academic papers.

Watermark-Free (Basic+)

Free exports include a subtle 8%-opacity watermark. Basic and Pro exports are completely clean.

Unlimited Exports (Basic+)

Free tier: 3 exports per 24 hours. Basic and Pro: unlimited, no daily cap.

Privacy by Design

Your data never
leaves your machine

Graph Plotter is a desktop app. All data processing (reading, computing, plotting) happens entirely on your computer. Nothing is uploaded to any server. Not even temporarily.

Only your licensing session token communicates with our servers (to verify your subscription). Your Excel files, financial data, client information, and charts never leave your machine.

100% Offline Processing

No cloud, no uploads, no tracking

✓ Client portfolio data stays private
✓ No cloud upload, no third-party servers
✓ Works fully offline after installation
✓ Compatible with internal data policies
✓ Suitable for regulated and compliance-heavy industries

UI & Experience

Built to feel like a professional desktop tool, because it is one.

Dark & Light Theme

Switch between deep navy dark mode and clean white light mode without losing your plot state.

Pan & Zoom

Pan mode, zoom mode, and a one-click Reset button to restore the original chart view.

Point Annotations

Pro

Right-click any data point to add a text note. Notes are saved with your project file.

Fullscreen Mode

Press F11 or toggle from the menu to maximise your chart viewing area.

Custom Labels

Chart title, X-axis label, Y-axis label, and custom legend labels per series, all configurable.

Decimal Precision

Set 0–6 decimal places for all numeric displays. Applied to labels, totals, and MA values.

Session Persistence

Your login session is cached locally. Re-open the app and pick up right where you left off.

Live Reload

Reload data from file at any time. Update your Excel and re-plot without reopening. Instant refresh.

Compare Plans

All plans include the desktop app and offline processing.

Feature Free Basic Pro
Chart Types
Line Chart ✓ ✓ ✓
Scatter, Bar, Pie Charts ✗ ✓ ✓
Histogram ✗ ✗ ✓
Gantt Chart (code & date modes) ✗ ✗ ✓
Efficient Frontier ✗ ✗ ✓
Analytics
Trendlines & Moving Average ✗ ✓ ✓
Month Markers & Totals Box ✗ ✓ ✓
Value Labels & Decimal Control ✓ ✓ ✓
Anomaly Detection ✗ ✗ ✓
Data & Projects
Excel, CSV, ODS import ✓ ✓ ✓
Multi-sheet support & Data Preview ✗ ✓ ✓
Select Data dialog (3 modes) ✗ ✓ ✓
Save & Load projects (.gpplot.json) ✗ ✓ ✓
Point Annotations ✗ ✗ ✓
Export
PNG Export (220 DPI) ✓ ✓ ✓
Watermark-free export ✗ ✓ ✓
Daily export limit 3/day Unlimited Unlimited
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