# Milton Roy Metering Pump Tools vs PipeDN

The clearest difference is in-app purchases: Milton Roy Metering Pump Tools at none against PipeDN's 3. Milton Roy Metering Pump Tools also leads on iOS requirement (9.0 vs 15.1). PipeDN's advantage is update cadence (every 3 weeks vs every 49 months). On price, ads and device support there is nothing between them.

Both are free to download. PipeDN sells 3 in-app purchases, starting at $7.99 per month. Milton Roy Metering Pump Tools asks for nothing beyond the download.

Milton Roy Metering Pump Tools ships an update every 49 months, PipeDN every 3 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Milton Roy Metering Pump Tools | PipeDN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/milton-roy-metering-pump-tools/id710694120/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 40 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Milton Roy LLC](https://appshunter.io/developer/710694123) | [AQUILES DE LIMA](https://appshunter.io/developer/1883397199) |

## What reviewers say

### Milton Roy Metering Pump Tools

[App page](https://appshunter.io/ios/app/milton-roy-metering-pump-tools/id710694120)

This app assists pump users and process engineers with selecting and supporting metering pumps. It offers tools for pump calibration, material compatibility guidance for chemicals, and unit conversions for process specifications.

**Highlights:** Metering pump calibration calculator, Material compatibility data for chemicals, Unit conversion tool, Calibration history log, Pump selection assistance

**Features:** macOS Compatibility

**In-app purchases:** none


### PipeDN

[App page](https://appshunter.io/ios/app/pipedn/id6760237428)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PipeDN Pro | $7.99 | per month |
| PipeDN Pro | $49.99 | per year |
| PipeDN Pro | $79.99 | one-time |


## Frequently asked questions

### Is Milton Roy Metering Pump Tools free?

Milton Roy Metering Pump Tools is free to download, with no in-app purchases.

### Is PipeDN free?

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

### Do Milton Roy Metering Pump Tools or PipeDN have ads?

Neither Milton Roy Metering Pump Tools nor PipeDN shows ads.

### Which is updated more often, Milton Roy Metering Pump Tools or PipeDN?

Milton Roy Metering Pump Tools ships an update every 49 months, and PipeDN every 3 weeks. Most recently, Milton Roy Metering Pump Tools was updated on October 2, 2026 and PipeDN on October 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.*