# PolyWorks|DataLoop vs Sound Union

The clearest difference is update cadence: PolyWorks|DataLoop at every 2 months against Sound Union's every 14 months. Sound Union's advantage is iOS requirement (13.4 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PolyWorks|DataLoop ships an update every 2 months, Sound Union every 14 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PolyWorks|DataLoop | Sound Union |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/polyworksdataloop/id1497059661/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Free | — |
| Size | 11 MB | 160 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [InnovMetric Software Inc](https://appshunter.io/developer/422670141) | [Sound Union, Inc.](https://appshunter.io/developer/1709497253) |

## What reviewers say

### PolyWorks|DataLoop

[App page](https://appshunter.io/ios/app/polyworksdataloop/id1497059661)

Monitor 3D measurement activities and access inspection projects on the go. View detailed results, reports, and navigate color-mapped 3D models directly from your mobile device.

**Highlights:** Monitor 3D measurement activities, Access inspection projects, View inspection results, Access formatted reports, Navigate color-mapped 3D models

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Union

[App page](https://appshunter.io/ios/app/sound-union/id6468079951)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is PolyWorks|DataLoop free?

PolyWorks|DataLoop is free to download, with no in-app purchases.

### Is Sound Union free?

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

### Do PolyWorks|DataLoop or Sound Union have ads?

Neither PolyWorks|DataLoop nor Sound Union shows ads.

### Which is updated more often, PolyWorks|DataLoop or Sound Union?

PolyWorks|DataLoop ships an update every 2 months, and Sound Union every 14 months. Most recently, PolyWorks|DataLoop was updated on November 3, 2026 and Sound Union on October 30, 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.*