Comparison

Plot Digitizer vs Roley.ai

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Plot Digitizer

Extract numerical data from 2D plot images. Easily obtain X and Y coordinates from scanned graphs or photos, allowing you to view, export, or share the digitized information.

Highlights
  • Extract data from plot images
  • Crop and align plots
  • Set X and Y axes anchor points
  • Digitize data series
  • Label data series
  • Export digitized data
  • View fitted equations
Features
Read full description

Plot Digitizer is an app to extract numerical data from plot images. It is often necessary to obtain original (x, y) data from graphs, e.g. from scanned scientific plots, when data values are not available. Plot Digitizer allows you to easily get the numbers in such cases. Digitizing is a nine-step process: 1. Open a picture or take a photo of the plot; 2. Crop the picture to isolate the plot; 3. Align the plot, if required; 4. Do some fine-tuning cropping, if required; 5. Set the X and Y axes anchor points using your finger or an Apple Pencil; 6. Adjust the Axes Titles and anchor points; 7. Digitize the data series using your finger or an Apple Pencil; 8. Label the data series; 9. View, export the digitized data or view fitted equations. At the end of the process, you can copy the data to the clipboard, share it with another app, view a digital plot or fitted equations from the digitized data. Disclaimer: The plot image shown in the screnshots is taken from: A. Danesh, D.-H. Xu, D.H. Tehrani, A.C. Todd. Improving predictions of equation of state by modifying its parameters for super critical components of hydrocarbon reservoir fluids. Fluid Phase Equilibria 112 (1995) 45-61.

About

Roley.ai

Features
Read full description

This app allows users to record audio sales conversations for review by the Roley.ai sales analysis engine. Reports are currently only available in their linked web account (not available through the app). The app simply provides the utility of recording and uploading the call.

Screenshots

Plot Digitizer4 screens
Roley.ai3 screens

Verdict

The call

The clearest difference is price: Roley.ai at Free against Plot Digitizer's $3.99. Plot Digitizer's advantage is update cadence (every 3 days vs every 11 days). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Roley.ai is free to download; Plot Digitizer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Plot Digitizer ships an update every 3 days, Roley.ai every 11 days. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
Plot Digitizer versus Roley.ai: the parameters behind the verdict, then further details
ParameterPlot DigitizerRoley.ai
Price$3.99Free — better
Rating2.3 (3 ratings) — better—
Positive reviews20.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 days — betterEvery 11 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 — better15.1
Further details — not scored
Size44 MB61 MB
Age rating4+4+
DeveloperDaniel MedeirosRoley.ai CORP

In-app purchases

None

Plot Digitizer

No in-app purchases

None

Roley.ai

No in-app purchases

Questions

Is Plot Digitizer free?
Plot Digitizer costs $3.99, with no in-app purchases.
Is Roley.ai free?
Roley.ai is free to download, with no in-app purchases.
Do Plot Digitizer or Roley.ai have ads?
Neither Plot Digitizer nor Roley.ai shows ads.
Which is updated more often, Plot Digitizer or Roley.ai?
Plot Digitizer ships an update every 3 days, and Roley.ai every 11 days. Most recently, Plot Digitizer was updated on October 1, 2026 and Roley.ai on October 9, 2026.

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