# Plot Digitizer vs Stairstep

The clearest difference is price: Stairstep at Free against Plot Digitizer's $3.99. Stairstep also leads on rating (5.0 vs 2.3). Plot Digitizer's advantage is update cadence (every 3 days vs every 2 weeks) and ratings volume (3 vs 1). On ads, in-app purchases and device support there is nothing between them.

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

Stairstep holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Plot Digitizer ships an update every 3 days, Stairstep every 2 weeks. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Plot Digitizer | Stairstep |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/plot-digitizer/id1497211648/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stairstep/id6781493653/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Paid | **Free** |
| Size | 44 MB | 23 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Medeiros](https://appshunter.io/developer/1091004600) | [Twarge LLC](https://appshunter.io/developer/6781456673) |

## What reviewers say

### Plot Digitizer

[App page](https://appshunter.io/ios/app/plot-digitizer/id1497211648)

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:** macOS Compatibility

**In-app purchases:** none


### Stairstep

[App page](https://appshunter.io/ios/app/stairstep/id6781493653)

View and inspect 3D models in STEP file format. Explore models with intuitive orbit, pan, and zoom controls, aided by a reference grid and scale bar. Access detailed geometry information including vertices, triangles, and dimensions.

**Highlights:** 3D model viewing, Orbit, pan, and zoom controls, Reference grid, Scale bar for size tracking, Geometry inspector, Dimension reporting

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Plot Digitizer free?

Plot Digitizer costs $3.99, with no in-app purchases.

### Is Stairstep free?

Stairstep is free to download, with no in-app purchases.

### Which has better reviews, Plot Digitizer or Stairstep?

Stairstep is rated higher. Plot Digitizer averages 2.3 out of 5 from 3 ratings, while Stairstep averages 5.0 from 1 ratings.

### Do Plot Digitizer or Stairstep have ads?

Neither Plot Digitizer nor Stairstep shows ads.

### Which is updated more often, Plot Digitizer or Stairstep?

Plot Digitizer ships an update every 3 days, and Stairstep every 2 weeks. Most recently, Plot Digitizer was updated on October 1, 2026 and Stairstep on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*