# SphinxSurvey (SphinxMobile) vs CASC

SphinxSurvey (SphinxMobile) and CASC are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SphinxSurvey (SphinxMobile) ships an update every 3 weeks, CASC fortnightly. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | SphinxSurvey (SphinxMobile) | CASC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 39 MB | 87 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ergole Informatique](https://appshunter.io/developer/529774372) | [CyberCe](https://appshunter.io/developer/1125407569) |

## What reviewers say

### SphinxSurvey (SphinxMobile)

[App page](https://appshunter.io/ios/app/sphinxsurvey-sphinxmobile/id6475711485)

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

**In-app purchases:** none


### CASC

[App page](https://appshunter.io/ios/app/casc-i-sceta/id6776899072)

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

**In-app purchases:** none


## Frequently asked questions

### Is SphinxSurvey (SphinxMobile) free?

SphinxSurvey (SphinxMobile) is free to download, with no in-app purchases.

### Is CASC free?

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

### Do SphinxSurvey (SphinxMobile) or CASC have ads?

Neither SphinxSurvey (SphinxMobile) nor CASC shows ads.

### Which is updated more often, SphinxSurvey (SphinxMobile) or CASC?

SphinxSurvey (SphinxMobile) ships an update every 3 weeks, and CASC fortnightly. Most recently, SphinxSurvey (SphinxMobile) was updated on October 27, 2026 and CASC on October 20, 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.*