# ValidApp CRT vs Fireflux

The clearest difference is update cadence: Fireflux at every 3 weeks against ValidApp CRT's every 39 months. ValidApp CRT's advantage is iOS requirement (13.0 vs 18.0). 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.

ValidApp CRT ships an update every 39 months, Fireflux every 3 weeks. The most recent releases landed on September 15, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | ValidApp CRT | Fireflux |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 weeks** |
| Size | 17 MB | 76 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Consejo Regulador del Tequila A. C.](https://appshunter.io/developer/1566031771) | [Fluxo Technologies S.A.P.I. de C.V.](https://appshunter.io/developer/1735988091) |

## What reviewers say

### ValidApp CRT

[App page](https://appshunter.io/ios/app/validapp-crt/id6449137052)

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

**In-app purchases:** none


### Fireflux

[App page](https://appshunter.io/ios/app/fireflux/id6497567104)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ValidApp CRT free?

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

### Is Fireflux free?

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

### Do ValidApp CRT or Fireflux have ads?

Neither ValidApp CRT nor Fireflux shows ads.

### Which is updated more often, ValidApp CRT or Fireflux?

ValidApp CRT ships an update every 39 months, and Fireflux every 3 weeks. Most recently, ValidApp CRT was updated on September 15, 2026 and Fireflux on May 17, 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.*