# SENIN vs Construction Calc

The clearest difference is rating: Construction Calc at 5.0 against SENIN's 1.6. SENIN's advantage is in-app purchases (none vs 1) and update cadence (every 8 days vs every 3 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Construction Calc sells 1 one-off in-app purchase. SENIN asks for nothing beyond the download.

Construction Calc holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: SENIN has 10 ratings behind it against 1, so its average is the more settled of the two.

SENIN ships an update every 8 days, Construction Calc every 3 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SENIN | Construction Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (10 ratings)](https://appshunter.io/ios/app/senin/id1501481528/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/construction-calc-estimator/id6755724882/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 months |
| Monetization | Free | Free |
| Size | 70 MB | 3 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [星星 艾](https://appshunter.io/developer/985866002) | [Konstantin Khoroshun](https://appshunter.io/developer/1476700024) |

## What reviewers say

### SENIN

[App page](https://appshunter.io/ios/app/senin/id1501481528)

Control a specific neck massager model via Bluetooth. Adjust massage time, intensity, and heat settings for a comfortable experience.

**Highlights:** Bluetooth control, Adjustable massage time, Customizable strength levels, Heat level settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Construction Calc

[App page](https://appshunter.io/ios/app/construction-calc-estimator/id6755724882)

This offline calculator helps construction professionals and DIYers quickly estimate materials for various projects. It supports imperial and metric units, and all calculations are stored locally for privacy.  No internet connection is required.

**Highlights:** Offline material estimation, Calculates 8 key materials, Feet-Inch-Fraction input, Imperial & Metric units, Local data storage, No subscriptions or ads

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features | $0.99 | one-time |


## Frequently asked questions

### Is SENIN free?

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

### Is Construction Calc free?

Construction Calc is free to download, with in-app purchases available.

### Which has better reviews, SENIN or Construction Calc?

Construction Calc is rated higher. SENIN averages 1.6 out of 5 from 10 ratings, while Construction Calc averages 5.0 from 1 ratings.

### Do SENIN or Construction Calc have ads?

Neither SENIN nor Construction Calc shows ads.

### Which is updated more often, SENIN or Construction Calc?

SENIN ships an update every 8 days, and Construction Calc every 3 months. Most recently, SENIN was updated on November 3, 2026 and Construction Calc on November 5, 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.*