# CSU UPAS vs CaseXcel

The clearest difference is in-app purchases: CSU UPAS at none against CaseXcel's 4. CSU UPAS also leads on iOS requirement (9.0 vs 15.1). CaseXcel's advantage is update cadence (every 11 days vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CaseXcel sells 4 in-app purchases, starting at $9.99 per month. CSU UPAS asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for CSU UPAS against 5.0 for CaseXcel. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

CSU UPAS ships an update every 2 months, CaseXcel every 11 days. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CSU UPAS | CaseXcel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/csu-upas/id1126067765/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/casexcel-case-interview-prep/id6748584932/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 61 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Colorado State University](https://appshunter.io/developer/527760765) | [ANIELLO DI POLITO](https://appshunter.io/developer/1822838772) |

## What reviewers say

### CSU UPAS

[App page](https://appshunter.io/ios/app/csu-upas/id1126067765)

This app controls a personal air sampler device. It allows users to customize settings like sample name, flow rate, start time, duration, and GPS location before running the sensor. Data can then be downloaded to your phone or tablet.

**Highlights:** Bluetooth sensor pairing, Customize sample name, Adjust flow rate, Set sensor start time and duration, Configure GPS settings, Download UPAS files

**Features:** macOS Compatibility

**In-app purchases:** none


### CaseXcel

[App page](https://appshunter.io/ios/app/casexcel-case-interview-prep/id6748584932)

Practice essential consulting interview skills daily in under 10 minutes. Improve mental math, market sizing, structuring, and framework recall with structured, timed drills. Access a reference library of frameworks without fluff.

**Highlights:** Daily mental math drills, Timed case math calculations, Market sizing estimation practice, MECE structuring drills, Framework recall flashcards, Reference library of frameworks

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CaseXcel Premium | $9.99 | per month |
| CaseXcel Annual (Best Value!) | $39.99 | per year |
| CaseXcel Pro Lifetime | $59.99 | one-time |
| CaseXcel Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is CSU UPAS free?

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

### Is CaseXcel free?

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

### Which has better reviews, CSU UPAS or CaseXcel?

CSU UPAS and CaseXcel are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do CSU UPAS or CaseXcel have ads?

Neither CSU UPAS nor CaseXcel shows ads.

### Which is updated more often, CSU UPAS or CaseXcel?

CSU UPAS ships an update every 2 months, and CaseXcel every 11 days. Most recently, CSU UPAS was updated on October 5, 2026 and CaseXcel on October 15, 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.*