# Conductivity Basic for EC111B vs Acid and Base Molarity Calc

The clearest difference is price: Conductivity Basic for EC111B at Free against Acid and Base Molarity Calc's $2.99. Conductivity Basic for EC111B also leads on iOS requirement (9.0 vs 13). On update cadence, ads, in-app purchases and device support there is nothing between them.

Conductivity Basic for EC111B is free to download; Acid and Base Molarity Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Conductivity Basic for EC111B ships an update every 15 months, Acid and Base Molarity Calc every 29 months. The most recent releases landed on September 14, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Conductivity Basic for EC111B | Acid and Base Molarity Calc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/acid-and-base-molarity-calc/id1352167174/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 29 months |
| Monetization | — | Paid |
| Size | 18 MB | 1 MB |
| Requires iOS | **9.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jenco Instruments, Inc.](https://appshunter.io/developer/1275832649) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Conductivity Basic for EC111B

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Acid and Base Molarity Calc

[App page](https://appshunter.io/ios/app/acid-and-base-molarity-calc/id1352167174)

This tool helps you calculate the molarity of acid or base solutions. It provides lab-ready instructions for preparing solutions of a specific molarity from concentrated stock solutions. Results can be easily copied to other applications.

**Highlights:** Molarity calculation for acid/base solutions, Preparation instructions for specified molarity, Uses dilution formula (M1V1=M2V2), Calculated results are copyable, Includes molarity formula and explanation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Conductivity Basic for EC111B free?

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

### Is Acid and Base Molarity Calc free?

Acid and Base Molarity Calc costs $2.99, with no in-app purchases.

### Do Conductivity Basic for EC111B or Acid and Base Molarity Calc have ads?

Neither Conductivity Basic for EC111B nor Acid and Base Molarity Calc shows ads.

### Which is updated more often, Conductivity Basic for EC111B or Acid and Base Molarity Calc?

Conductivity Basic for EC111B ships an update every 15 months, and Acid and Base Molarity Calc every 29 months. Most recently, Conductivity Basic for EC111B was updated on September 14, 2026 and Acid and Base Molarity Calc on June 4, 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.*