# Pump Rate Calculator vs DP

The clearest difference is update cadence: Pump Rate Calculator at every 2 months against DP's every 16 months. On price, ads, in-app purchases and monetization model there is nothing between them.

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

Pump Rate Calculator ships an update every 2 months, DP every 16 months. The most recent releases landed on September 14, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | Pump Rate Calculator | DP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/dp-select/id934888136/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | Free | Free |
| Size | 3 MB | 15 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ash Point Ltd.](https://appshunter.io/developer/567630274) | [DP Pumps](https://appshunter.io/developer/934888135) |

## What reviewers say

### Pump Rate Calculator

[App page](https://appshunter.io/ios/app/pump-rate-calculator/id567630271)

This utility app helps oilfield professionals quickly calculate pump rates, volume pumped, and time spent pumping. Simply input the pump coefficient and tap along with the pump strokes for instant results.

**Highlights:** Calculate pump rate, Calculate volume pumped, Calculate time pumping, Track time started, Input pump coefficient

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### DP

[App page](https://appshunter.io/ios/app/dp-select/id934888136)

This tool helps users configure and select DP pumps for their specific applications. It provides detailed product information, including technical specifications, hydraulic curves, and dimensions, based on your selection criteria.

**Highlights:** Intuitive product configuration, Selection via hydraulic data (Q, H), Replacement product comparison, Direct pump type selection, Technical specification sheets, Hydraulic curves, Dimensions and drawings

**In-app purchases:** none


## Frequently asked questions

### Is Pump Rate Calculator free?

Pump Rate Calculator is free to download, with no in-app purchases.

### Is DP free?

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

### Do Pump Rate Calculator or DP have ads?

Neither Pump Rate Calculator nor DP shows ads.

### Which is updated more often, Pump Rate Calculator or DP?

Pump Rate Calculator ships an update every 2 months, and DP every 16 months. Most recently, Pump Rate Calculator was updated on September 14, 2026 and DP on July 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*