# DyConcept® HoloViewer vs ElbowCalc

The clearest difference is in-app purchases: DyConcept® HoloViewer at none against ElbowCalc's 1. DyConcept® HoloViewer also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. ElbowCalc sells 1 one-off in-app purchase. DyConcept® HoloViewer asks for nothing beyond the download.

DyConcept® HoloViewer ships an update every 2 months, ElbowCalc every 6 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | DyConcept® HoloViewer | ElbowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 305 MB | 37 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kathrin Bertelmann](https://appshunter.io/developer/1455448435) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### DyConcept® HoloViewer

[App page](https://appshunter.io/ios/app/dyconcept-holoviewer/id1455448766)

**Features:** macOS Compatibility

**In-app purchases:** none


### ElbowCalc

[App page](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014)

This professional tool assists engineers and fabricators in quickly calculating and visualizing flat patterns for elbows and reducers. It provides instant pattern graphs with cut coordinates to streamline fabrication and minimize material waste.

**Highlights:** Calculate various elbow types, Generate flat pattern graphs, Supports reducer bends, Provides cut coordinates, Fast and precise calculations, Share and save results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $19.99 | one-time |


## Frequently asked questions

### Is DyConcept® HoloViewer free?

DyConcept® HoloViewer is free to download, with no in-app purchases.

### Is ElbowCalc free?

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

### Do DyConcept® HoloViewer or ElbowCalc have ads?

Neither DyConcept® HoloViewer nor ElbowCalc shows ads.

### Which is updated more often, DyConcept® HoloViewer or ElbowCalc?

DyConcept® HoloViewer ships an update every 2 months, and ElbowCalc every 6 months. Most recently, DyConcept® HoloViewer was updated on October 26, 2026 and ElbowCalc on October 26, 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.*