# Centrifugal Pump Spec vs Conductivity Basic for EC111B

The clearest difference is price: Conductivity Basic for EC111B at Free against Centrifugal Pump Spec's $5.99. Conductivity Basic for EC111B also leads on iOS requirement (9.0 vs 14.3). On update cadence, ads, in-app purchases and device support there is nothing between them.

Conductivity Basic for EC111B is free to download; Centrifugal Pump Spec costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Centrifugal Pump Spec ships an update every 11 months, Conductivity Basic for EC111B every 15 months. The most recent releases landed on May 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Centrifugal Pump Spec | Conductivity Basic for EC111B |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 15 months |
| Size | 1 MB | 18 MB |
| Requires iOS | 14.3 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muralidhar Shenoy](https://appshunter.io/developer/460148822) | [Jenco Instruments, Inc.](https://appshunter.io/developer/1275832649) |

## What reviewers say

### Centrifugal Pump Spec

[App page](https://appshunter.io/ios/app/centrifugal-pump-spec/id482488028)

**Features:** macOS Compatibility

**In-app purchases:** none


### Conductivity Basic for EC111B

[App page](https://appshunter.io/ios/app/conductivity-basic-for-ec111b/id1315393085)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Centrifugal Pump Spec free?

Centrifugal Pump Spec costs $5.99, with no in-app purchases.

### Is Conductivity Basic for EC111B free?

Conductivity Basic for EC111B is free to download, with no in-app purchases.

### Do Centrifugal Pump Spec or Conductivity Basic for EC111B have ads?

Neither Centrifugal Pump Spec nor Conductivity Basic for EC111B shows ads.

### Which is updated more often, Centrifugal Pump Spec or Conductivity Basic for EC111B?

Centrifugal Pump Spec ships an update every 11 months, and Conductivity Basic for EC111B every 15 months. Most recently, Centrifugal Pump Spec was updated on May 16, 2026 and Conductivity Basic for EC111B on September 14, 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.*