# Polygraf vs Robot Stats

The clearest difference is in-app purchases: Polygraf at none against Robot Stats's 2. Polygraf also leads on iOS requirement (9.0 vs 16.4). Robot Stats's advantage is update cadence (every 9 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Robot Stats sells 2 in-app purchases, starting at $12.99 per month. Polygraf asks for nothing beyond the download.

Polygraf ships an update every 6 months, Robot Stats every 9 days. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Polygraf | Robot Stats |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (9 ratings)](https://appshunter.io/ios/app/robot-stats-vex-scouting/id6446502976/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 9 days** |
| Monetization | — | Free |
| Size | 40 MB | 53 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masaryk University](https://appshunter.io/developer/443178424) | [Lucian Badea](https://appshunter.io/developer/1631562522) |

## What reviewers say

### Polygraf

[App page](https://appshunter.io/ios/app/polygraf/id443178421)

**Features:** macOS Compatibility

**In-app purchases:** none


### Robot Stats

[App page](https://appshunter.io/ios/app/robot-stats-vex-scouting/id6446502976)

This app assists VEX Robotics teams in scouting, tracking performance, and preparing for competitions. It provides tools to analyze rankings, predict match outcomes, and generate detailed event reports using real competition data.

**Highlights:** Advanced team rankings, Event report generation, Match outcome prediction, Integrated scouting lists, Event and match analysis, Region and team insights

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coach Pro Monthly | $12.99 | per month |
| Coach Pro Yearly | $119.00 | per year |


## Frequently asked questions

### Is Polygraf free?

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

### Is Robot Stats free?

Robot Stats is free to download, with in-app purchases available.

### Do Polygraf or Robot Stats have ads?

Neither Polygraf nor Robot Stats shows ads.

### Which is updated more often, Polygraf or Robot Stats?

Polygraf ships an update every 6 months, and Robot Stats every 9 days. Most recently, Polygraf was updated on November 6, 2026 and Robot Stats on November 12, 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.*