# Kxx Programmer's Reference vs FedReg

The clearest difference is price: FedReg at Free against Kxx Programmer's Reference's $3.99. FedReg also leads on update cadence (every 6 weeks vs every 10 months). Kxx Programmer's Reference's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

FedReg is free to download; Kxx Programmer's Reference costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kxx Programmer's Reference ships an update every 10 months, FedReg every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Kxx Programmer's Reference | FedReg |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fedreg-federal-register-view/id6756493411/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Size | 6 MB | 41 MB |
| Requires iOS | **17.1** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Downs, ks7d](https://appshunter.io/developer/367909071) | [Epic Genius LLC](https://appshunter.io/developer/1193070219) |

## What reviewers say

### Kxx Programmer's Reference

[App page](https://appshunter.io/ios/app/kxx-programmers-reference/id367909068)

**In-app purchases:** none


### FedReg

[App page](https://appshunter.io/ios/app/fedreg-federal-register-view/id6756493411)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kxx Programmer's Reference free?

Kxx Programmer's Reference costs $3.99, with no in-app purchases.

### Is FedReg free?

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

### Do Kxx Programmer's Reference or FedReg have ads?

FedReg shows ads; Kxx Programmer's Reference does not.

### Which is updated more often, Kxx Programmer's Reference or FedReg?

Kxx Programmer's Reference ships an update every 10 months, and FedReg every 6 weeks. Most recently, Kxx Programmer's Reference was updated on October 27, 2026 and FedReg on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*