# webR vs DEC Opcodes

The clearest difference is in-app purchases: webR at none against DEC Opcodes's 1. webR also leads on iOS requirement (14.0 vs 18.0). DEC Opcodes's advantage is update cadence (every 8 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. DEC Opcodes sells 1 one-off in-app purchase. webR asks for nothing beyond the download.

webR ships an update monthly, DEC Opcodes every 8 days. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | webR | DEC Opcodes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/dec-opcodes/id6760246055/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | — | Free |
| Size | 32 MB | 42 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Luis Acevedo-Arreguin](https://appshunter.io/developer/1642773653) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### webR

[App page](https://appshunter.io/ios/app/webr/id6477336108)

**Features:** macOS Compatibility

**In-app purchases:** none


### DEC Opcodes

[App page](https://appshunter.io/ios/app/dec-opcodes/id6760246055)

Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.

**Highlights:** Instruction set reference, Historical context and photos, System specifications, Interactive assembly lessons, Search and filtering, Customizable themes, Simple assembler

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |


## Frequently asked questions

### Is webR free?

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

### Is DEC Opcodes free?

DEC Opcodes is free to download, with in-app purchases available.

### Do webR or DEC Opcodes have ads?

Neither webR nor DEC Opcodes shows ads.

### Which is updated more often, webR or DEC Opcodes?

webR ships an update monthly, and DEC Opcodes every 8 days. Most recently, webR was updated on September 17, 2026 and DEC Opcodes on September 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.*