# DCircuit Lab vs A

The clearest difference is rating: DCircuit Lab at 3.0 against A's 2.3. DCircuit Lab also leads on price ($3.99 vs $4.99). A's advantage is update cadence (every 5 weeks vs every 10 months) and review sentiment (26% vs 11%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

DCircuit Lab costs $3.99 and A $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DCircuit Lab holds the better App Store score, 3.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 11% of DCircuit Lab's written reviews are positive against 26% of A's, so the app with the better star average is not the one people write more warmly about.

DCircuit Lab ships an update every 10 months, A every 5 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | DCircuit Lab | A |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/dcircuit-lab/id382544208/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/a-truss-pro/id412684176/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 11.1% of reviews | **26.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 3 MB | 10 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Fabrizio Boco](https://appshunter.io/developer/466239616) | [Jutarus Ratanasethakul](https://appshunter.io/developer/1454380236) |

## What reviewers say

### DCircuit Lab

[App page](https://appshunter.io/ios/app/dcircuit-lab/id382544208)

Design and simulate digital circuits with a comprehensive set of tools. Explore combinatorial and sequential logic, including gates, flip-flops, and custom components. Dynamic simulation with timing charts helps analyze circuit behavior.

**Highlights:** Combinatorial and sequential circuit simulation, Single-step and step-by-step simulation modes, Dynamic simulation with timing charts, Wide range of logic gates and flip-flops, Custom component creation via truth tables, Integrated video tutorials

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

**In-app purchases:** none


### A

[App page](https://appshunter.io/ios/app/a-truss-pro/id412684176)

Analyze 2D truss problems quickly on your mobile device. Create standard or custom truss structures, manage material properties, and generate PDF reports with flexible unit options.

**Highlights:** Standard truss templates (18 types), Custom truss creation, Flexible unit system, Built-in material library, PDF reporting and email export

**In-app purchases:** none


## Frequently asked questions

### Is DCircuit Lab free?

DCircuit Lab costs $3.99, with no in-app purchases.

### Is A free?

A costs $4.99, with no in-app purchases.

### Which has better reviews, DCircuit Lab or A?

DCircuit Lab is rated higher. DCircuit Lab averages 3.0 out of 5 from 3 ratings, while A averages 2.3 from 3 ratings.

### Do DCircuit Lab or A have ads?

Neither DCircuit Lab nor A shows ads.

### Which is updated more often, DCircuit Lab or A?

DCircuit Lab ships an update every 10 months, and A every 5 weeks. Most recently, DCircuit Lab was updated on October 16, 2026 and A on October 14, 2026.

---

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