Plot Digitizer vs Roley.ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Roley.ai
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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
Verdict
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
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.
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.
| Parameter | Plot Digitizer | Roley.ai |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 44 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Medeiros | Roley.ai CORP |
In-app purchases
Plot Digitizer
No in-app purchases
Roley.ai
No in-app purchases
Questions
Is Plot Digitizer free?
Is Roley.ai free?
Do Plot Digitizer or Roley.ai have ads?
Which is updated more often, Plot Digitizer or Roley.ai?
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