# DEC Opcodes vs Cyber Soroban

The clearest difference is price: DEC Opcodes at Free against Cyber Soroban's $0.49. DEC Opcodes also leads on update cadence (every 8 days vs every 2 months) and ratings volume (3 vs 1). Cyber Soroban's advantage is in-app purchases (none vs 1) and iOS requirement (16.0 vs 18.0). On rating, ads and device support there is nothing between them.

DEC Opcodes is free to download; Cyber Soroban costs $0.49 up front. DEC Opcodes sells 1 one-off in-app purchase. Cyber Soroban asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DEC Opcodes against 5.0 for Cyber Soroban. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

DEC Opcodes ships an update every 8 days, Cyber Soroban every 2 months. The most recent releases landed on September 20, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | DEC Opcodes | Cyber Soroban |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/dec-opcodes/id6760246055/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cyber-soroban/id6767681268/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 42 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [John Kennedy](https://appshunter.io/developer/284943103) | [satoshi amasaki](https://appshunter.io/developer/1891268722) |

## What reviewers say

### 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 |


### Cyber Soroban

[App page](https://appshunter.io/ios/app/cyber-soroban/id6767681268)

Experience a futuristic abacus with a cyberpunk aesthetic. Flick luminous beads on a neon display for calculation. Enjoy immersive sound effects and a unique visual style inspired by TRON.

**Highlights:** Cyberpunk UI with neon glow, Luminous gem-like beads, Electronic click and glass chime sounds, Full 13-column abacus calculation, Landscape-only immersive experience

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

**In-app purchases:** none


## Frequently asked questions

### Is DEC Opcodes free?

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

### Is Cyber Soroban free?

Cyber Soroban costs $0.49, with no in-app purchases.

### Which has better reviews, DEC Opcodes or Cyber Soroban?

DEC Opcodes and Cyber Soroban are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do DEC Opcodes or Cyber Soroban have ads?

Neither DEC Opcodes nor Cyber Soroban shows ads.

### Which is updated more often, DEC Opcodes or Cyber Soroban?

DEC Opcodes ships an update every 8 days, and Cyber Soroban every 2 months. Most recently, DEC Opcodes was updated on September 20, 2026 and Cyber Soroban on August 25, 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.*