# DOI Ethics vs KAZA TFCA

The clearest difference is update cadence: DOI Ethics at every 3 months against KAZA TFCA's every 9 months. KAZA TFCA's advantage is iOS requirement (15.6 vs 18.6). 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.

DOI Ethics ships an update every 3 months, KAZA TFCA every 9 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | DOI Ethics | KAZA TFCA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doi-ethics/id1498505971/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | — |
| Size | 79 MB | 35 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [U.S. Department of the Interior](https://appshunter.io/developer/1498505970) | [US Forest Service](https://appshunter.io/developer/949583790) |

## What reviewers say

### DOI Ethics

[App page](https://appshunter.io/ios/app/doi-ethics/id1498505971)

This app offers clear summaries of federal ethics rules and regulations for DOI employees. It includes interactive videos, resources, and a section for completing and submitting DOI-related forms, ensuring easy access to important information.

**Highlights:** Up-to-date federal ethics rules, Summaries of ethics laws, Interactive videos, Handy resources, Forms and Reporting section

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

**In-app purchases:** none


### KAZA TFCA

[App page](https://appshunter.io/ios/app/kaza-tfca/id1643160427)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DOI Ethics free?

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

### Is KAZA TFCA free?

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

### Do DOI Ethics or KAZA TFCA have ads?

Neither DOI Ethics nor KAZA TFCA shows ads.

### Which is updated more often, DOI Ethics or KAZA TFCA?

DOI Ethics ships an update every 3 months, and KAZA TFCA every 9 months. Most recently, DOI Ethics was updated on November 3, 2026 and KAZA TFCA on November 7, 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.*