XSpecApp vs GHZ state
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
XSpecApp
This application displays EDXRF spectra, allowing users to manually identify elements, calculate ROIs, and add annotations. It supports saving, loading, and printing spectra with detailed information. The app can also acquire spectra using a digital pulse processor via USB, Serial, or wireless connections.
- Manual element identification
- ROI calculation for peaks
- Spectrum annotations
- Spectrum printing with ROIs
- Save and load spectra
- Acquire spectra via digital pulse processor
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XSpecApp displays EDXRF spectra providing the following capabilities: * Manual identification of elements * ROI (integrals) for identified peaks * Annotations on spectrum * Printing of spectrum with calculated ROIs * Saving and Loading of spectrum, with annotations and element information * NEW: Acquire spectra using an Amptek DP5 digital pulse processor. Supported interfaces are USB, Serial, and XSpecConnect (Wi-Fi and Bluetooth) . Please visit www.xrfconsulting.com for details on XSpecConnect.
GHZ state
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This app represents the quantum circuit for Greenberger-Horne-Zeilinger state. You can find GHZ states for various initial states.
Screenshots
Verdict
The clearest difference is in-app purchases: GHZ state at none against XSpecApp's 1. XSpecApp's advantage is iOS requirement (8.0 vs 16). On price, ads and device support 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
Both are free to download. XSpecApp sells 1 one-off in-app purchase. GHZ state asks for nothing beyond the download.
| Parameter | XSpecApp | GHZ state |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 16 |
| Further details — not scored | ||
| Size | 48 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Cross, XRF Consulting, LLC | Sungjun Kim |
In-app purchases
XSpecApp
- XSpecApp$24.99
GHZ state
No in-app purchases









