# Bend deduction and Flat length vs DW Sono

The clearest difference is price: DW Sono at Free against Bend deduction and Flat length's $2.99. DW Sono also leads on update cadence (fortnightly vs every 46 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

DW Sono is free to download; Bend deduction and Flat length costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bend deduction and Flat length ships an update every 46 months, DW Sono fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Bend deduction and Flat length | DW Sono |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/bend-deduction-and-flat-length/id1608300708/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 46 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 2 MB | 367 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Dawei Medical (Jiangsu) Co.,Ltd](https://appshunter.io/developer/1675463297) |

## What reviewers say

### Bend deduction and Flat length

[App page](https://appshunter.io/ios/app/bend-deduction-and-flat-length/id1608300708)

This app calculates the bend deduction for sheet metal, determining the initial flat length needed for a finished part. It simplifies the process by eliminating trial and error for press brake operators, designers, and laser cutter operators, saving time and material.

**Highlights:** Calculate bend deduction, Determine flat length, Input interior angle, Input flange lengths, Input K factor, Input inside radius, Input material thickness

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

**In-app purchases:** none


### DW Sono

[App page](https://appshunter.io/ios/app/dw-sono/id6755143319)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bend deduction and Flat length free?

Bend deduction and Flat length costs $2.99, with no in-app purchases.

### Is DW Sono free?

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

### Do Bend deduction and Flat length or DW Sono have ads?

Neither Bend deduction and Flat length nor DW Sono shows ads.

### Which is updated more often, Bend deduction and Flat length or DW Sono?

Bend deduction and Flat length ships an update every 46 months, and DW Sono fortnightly. Most recently, Bend deduction and Flat length was updated on November 3, 2026 and DW Sono on October 30, 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.*