# ASCO Sizing & Calculator Tools vs Modbus 40001

The clearest difference is update cadence: Modbus 40001 at every 5 weeks against ASCO Sizing & Calculator Tools's every 4 months. ASCO Sizing & Calculator Tools's advantage is iOS requirement (11.0 vs 15.1). On price, ads, 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.

ASCO Sizing & Calculator Tools ships an update every 4 months, Modbus 40001 every 5 weeks. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ASCO Sizing & Calculator Tools | Modbus 40001 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/asco-sizing-and-calculator-tools/id1345954602/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 39 MB | 58 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ASCO Valve](https://appshunter.io/developer/742734952) | [PHILIP JULIAN ROBINSON](https://appshunter.io/developer/1865579763) |

## What reviewers say

### ASCO Sizing & Calculator Tools

[App page](https://appshunter.io/ios/app/asco-sizing-and-calculator-tools/id1345954602)

This app helps users quickly calculate fluid flow rates or valve Cv values. It also features an actuator sizing tool using Numasizing® technology and includes helpful conversion calculators. Additionally, users can find their nearest authorized distributor.

**Highlights:** Flow rate calculation, Valve Cv determination, Actuator sizing with Numasizing®, Cylinder type selection, Conversion calculators, Distributor locator

**Features:** macOS Compatibility

**In-app purchases:** none


### Modbus 40001

[App page](https://appshunter.io/ios/app/modbus-40001/id6799202584)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ASCO Sizing & Calculator Tools free?

ASCO Sizing & Calculator Tools is free to download, with no in-app purchases.

### Is Modbus 40001 free?

Modbus 40001 is free to download, with no in-app purchases.

### Do ASCO Sizing & Calculator Tools or Modbus 40001 have ads?

Neither ASCO Sizing & Calculator Tools nor Modbus 40001 shows ads.

### Which is updated more often, ASCO Sizing & Calculator Tools or Modbus 40001?

ASCO Sizing & Calculator Tools ships an update every 4 months, and Modbus 40001 every 5 weeks. Most recently, ASCO Sizing & Calculator Tools was updated on October 23, 2026 and Modbus 40001 on October 16, 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.*