# iMSO2 vs A

The clearest difference is review sentiment: iMSO2 at 100% against A's 36%. iMSO2 also leads on price (Free vs $8.99) and rating (5.0 vs 3.0). A's advantage is update cadence (every 3 weeks vs every 2 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

iMSO2 is free to download; A costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iMSO2 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of iMSO2's written reviews are positive against 36% of A's.

iMSO2 ships an update every 2 months, A every 3 weeks. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | iMSO2 | A |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/imso2/id658508510/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/a-projects/id1469182938/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **100.0% of reviews** | 35.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 11 MB | 59 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oscium LLC](https://appshunter.io/developer/411757369) | [Jutarus Ratanasethakul](https://appshunter.io/developer/1454380236) |

## What reviewers say

### iMSO2

[App page](https://appshunter.io/ios/app/imso2/id658508510)

Analyze analog and digital signals on your mobile device using specialized hardware. Offers a demo mode for simulated wave display and measurements, with full functionality unlocked by purchasing the iMSO-204 mixed signal oscilloscope hardware.

**Highlights:** Analyze analog and digital signals, Simulated wave display, Cursors with measurements, Direct signal measurements, Analog and digital triggering, Hardware integration

**Features:** macOS Compatibility

**In-app purchases:** none


### A

[App page](https://appshunter.io/ios/app/a-projects/id1469182938)

This app simplifies structural analysis for engineers and architects. It uses Direct Stiffness Analysis to calculate shear forces, bending moments, and deflections for beams, trusses, and frames. Get instant results and detailed reports for documentation and learning.

**Highlights:** Direct Stiffness Analysis, Beam, truss, and frame analysis, Shear force, bending moment, deflection calculations, User-friendly interface, Detailed analysis reports, Educational resource

**In-app purchases:** none


## Frequently asked questions

### Is iMSO2 free?

iMSO2 is free to download, with no in-app purchases.

### Is A free?

A costs $8.99, with no in-app purchases.

### Which has better reviews, iMSO2 or A?

iMSO2 is rated higher. iMSO2 averages 5.0 out of 5 from 2 ratings, while A averages 3.0 from 2 ratings.

### Do iMSO2 or A have ads?

Neither iMSO2 nor A shows ads.

### Which is updated more often, iMSO2 or A?

iMSO2 ships an update every 2 months, and A every 3 weeks. Most recently, iMSO2 was updated on October 13, 2026 and A on October 6, 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.*