# Oxy Cidadão vs Tristar

The clearest difference is update cadence: Tristar at every 2 weeks against Oxy Cidadão's every 3 months. 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.

Oxy Cidadão ships an update every 3 months, Tristar every 2 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Oxy Cidadão | Tristar |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 69 MB | 76 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Elotech Gestao Publica Ltda](https://appshunter.io/developer/1423609977) | [ProReserve Serviços de Internet](https://appshunter.io/developer/946491252) |

## What reviewers say

### Oxy Cidadão

[App page](https://appshunter.io/ios/app/oxy-cidadao/id1423609978)

This app simplifies citizen engagement with public administration, offering direct access to essential services without queues or bureaucracy. Manage property and company information, obtain debt clearance certificates, and track legal processes and tax obligations.

**Highlights:** Property and company consultation, Debt clearance certificate issuance, Process tracking, Tax monitoring, Payment slip generation

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

**In-app purchases:** none


### Tristar

[App page](https://appshunter.io/ios/app/tristar/id6478596655)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oxy Cidadão free?

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

### Is Tristar free?

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

### Do Oxy Cidadão or Tristar have ads?

Neither Oxy Cidadão nor Tristar shows ads.

### Which is updated more often, Oxy Cidadão or Tristar?

Oxy Cidadão ships an update every 3 months, and Tristar every 2 weeks. Most recently, Oxy Cidadão was updated on October 24, 2026 and Tristar 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.*