# FacturaGAS vs CAASIM

The clearest difference is rating: CAASIM at 2.3 against FacturaGAS's 1.4. CAASIM also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (12.0 vs 15.6). FacturaGAS's advantage is ratings volume (21 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CAASIM holds the better App Store score, 2.3 against 1.4. Both are backed by a comparable volume of ratings — 21 and 7 respectively.

FacturaGAS ships an update every 8 months, CAASIM every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | FacturaGAS | CAASIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (21 ratings)](https://appshunter.io/ios/app/facturagas/id1209183804/reviews) | **[2.3 (7 ratings)](https://appshunter.io/ios/app/caasim/id1500820580/reviews)** |
| Number of ratings | **21** | 7 |
| Positive reviews | 5.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 47 MB | 20 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ATIO SA de CV](https://appshunter.io/developer/1351433777) | [Gobierno del Estado de Hidalgo](https://appshunter.io/developer/896802652) |

## What reviewers say

### FacturaGAS

[App page](https://appshunter.io/ios/app/facturagas/id1209183804)

Generate fuel consumption invoices directly from your iPhone. Find nearby service stations and check current prices at each location.

**Highlights:** Generate fuel consumption invoices, Locate nearby service stations, Check current fuel prices, iPhone compatibility

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

**In-app purchases:** none


### CAASIM

[App page](https://appshunter.io/ios/app/caasim/id1500820580)

Manage your water and sewage accounts, view bills, make payments, and find branch locations. Access services online and stay updated on your consumption history from home.

**Highlights:** Manage multiple accounts, View account statements, Online payments, Download bills and receipts, Locate branches, View consumption history, Emergency numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FacturaGAS free?

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

### Is CAASIM free?

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

### Which has better reviews, FacturaGAS or CAASIM?

CAASIM is rated higher. FacturaGAS averages 1.4 out of 5 from 21 ratings, while CAASIM averages 2.3 from 7 ratings.

### Do FacturaGAS or CAASIM have ads?

Neither FacturaGAS nor CAASIM shows ads.

### Which is updated more often, FacturaGAS or CAASIM?

FacturaGAS ships an update every 8 months, and CAASIM every 2 months. Most recently, FacturaGAS was updated on October 24, 2026 and CAASIM on October 24, 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.*