# Structural Engineering Calc. vs Flash Color

The clearest difference is price: Flash Color at Free against Structural Engineering Calc.'s $5.99. Flash Color also leads on update cadence (every 5 weeks vs every 10 months). Structural Engineering Calc.'s advantage is rating (4.5 vs 1.0) and in-app purchases (none vs 2). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Flash Color is free to download; Structural Engineering Calc. costs $5.99 up front. Flash Color sells 2 in-app purchases, starting at $6.99 per 7 days. Structural Engineering Calc. asks for nothing beyond the download.

Structural Engineering Calc. holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Structural Engineering Calc. has 21 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

Structural Engineering Calc. ships an update every 10 months, Flash Color every 5 weeks. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Structural Engineering Calc. | Flash Color |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.5 (21 ratings)](https://appshunter.io/ios/app/structural-engineering-calc/id590507987/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/flash-color/id6783018980/reviews) |
| Number of ratings | **21** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 4 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [CHRISTOFFER SKAAHEIM](https://appshunter.io/developer/6783018982) |

## What reviewers say

### Structural Engineering Calc.

[App page](https://appshunter.io/ios/app/structural-engineering-calc/id590507987)

This app provides 59 essential structural engineering formulas for columns, beams, base plates, composite beams, and connections. It offers instant demand/capacity checks, a built-in AISC section database, and material references, supporting both USCS and SI units for on-site or office use.

**Highlights:** 59 structural formulas, Instant demand/capacity checks, Built-in AISC section database, Material and code references, USCS & SI unit support, Pass/Fail visual indicators

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

**In-app purchases:** none


### Flash Color

[App page](https://appshunter.io/ios/app/flash-color/id6783018980)

Transform your device into a versatile light source with customizable features. Enjoy a dynamic party mode that syncs with music, adjustable screen colors for various moods and tasks, and an SOS signal for emergencies. Offers both free and premium functionalities.

**Highlights:** Adjustable LED brightness and beam width, Music-synced strobe party mode, Customizable screen colors, SOS Morse code signal, Color palette customization (Pro), Beat sensitivity control (Pro)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $6.99 | per 7 days |
| Weekly | $19.99 | per month |


## Frequently asked questions

### Is Structural Engineering Calc. free?

Structural Engineering Calc. costs $5.99, with no in-app purchases.

### Is Flash Color free?

Flash Color is free to download, with in-app purchases available.

### Which has better reviews, Structural Engineering Calc. or Flash Color?

Structural Engineering Calc. is rated higher. Structural Engineering Calc. averages 4.5 out of 5 from 21 ratings, while Flash Color averages 1.0 from 1 ratings.

### Do Structural Engineering Calc. or Flash Color have ads?

Neither Structural Engineering Calc. nor Flash Color shows ads.

### Which is updated more often, Structural Engineering Calc. or Flash Color?

Structural Engineering Calc. ships an update every 10 months, and Flash Color every 5 weeks. Most recently, Structural Engineering Calc. was updated on October 14, 2026 and Flash Color 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.*