# Construction Calculator A1 vs Flow by Ecostp

The clearest difference is ads: Flow by Ecostp at none against Construction Calculator A1's shown. Flow by Ecostp also leads on iOS requirement (13.0 vs 15.0). Construction Calculator A1's advantage is update cadence (every 4 weeks vs every 5 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Construction Calculator A1 ships an update every 4 weeks, Flow by Ecostp every 5 months. The most recent releases landed on October 27, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Construction Calculator A1 | Flow by Ecostp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (29 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Monetization | Ad-supported | — |
| Size | 161 MB | 37 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [ECOSTP TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1812592504) |

## What reviewers say

### Construction Calculator A1

[App page](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051)

This app provides specialized calculators for construction professionals, including concrete, rebar, and area/volume calculations. It offers material quantity estimation, unit conversion, and professional features like BOQ export and project organization. Designed for contractors, builders, and engineers on job sites worldwide.

**Highlights:** Concrete material quantity calculation, Rebar bending schedule and weight calculation, Feet-inch arithmetic without decimal conversion, Area and volume calculations for 15+ shapes, Construction-specific unit conversions, Bill of Quantities (BOQ) export to PDF/Excel, Save and organize calculations by project

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Flow by Ecostp

[App page](https://appshunter.io/ios/app/flow-by-ecostp/id6745502402)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator A1 free?

Construction Calculator A1 is free to download, with no in-app purchases.

### Is Flow by Ecostp free?

Flow by Ecostp is free to download, with no in-app purchases.

### Do Construction Calculator A1 or Flow by Ecostp have ads?

Construction Calculator A1 shows ads; Flow by Ecostp does not.

### Which is updated more often, Construction Calculator A1 or Flow by Ecostp?

Construction Calculator A1 ships an update every 4 weeks, and Flow by Ecostp every 5 months. Most recently, Construction Calculator A1 was updated on October 27, 2026 and Flow by Ecostp on October 15, 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.*