# Calc Engine vs CountTally

The clearest difference is ads: Calc Engine at none against CountTally's shown. CountTally's advantage is iOS requirement (14.0 vs 18). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Calc Engine sells 1 one-off in-app purchase and CountTally sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Calc Engine | CountTally |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calc-engine/id1061766849/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Daily | — |
| Monetization | Free | — |
| Size | 17 MB | 44 MB |
| Requires iOS | 18 | **14.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [Wienold-IT UG (haftungsbeschraenkt)](https://appshunter.io/developer/6781501881) |

## What reviewers say

### Calc Engine

[App page](https://appshunter.io/ios/app/calc-engine/id1061766849)

A highly customizable calculator with advanced features like graphing, equation solving, and unit conversion. Design your own keyboards and functions to streamline your workflow across Apple devices.

**Highlights:** Customizable keyboard layouts, User-defined functions and constants, Live equation graphing, Equation solving, Extensive unit conversions, Programmer mode (hex, binary, octal), Cross-device syncing

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calc Engine+ | $9.99 | one-time |


### CountTally

[App page](https://appshunter.io/ios/app/counttally/id6781501879)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CountTally Pro (Monthly) | $1.99 | per month |
| CountTally Premium (Monthly) | $5.99 | per month |
| CountTally Pro (Yearly) | $12.99 | per year |
| CountTally Premium (Yearly) | $49.99 | per year |
| CountTally Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is Calc Engine free?

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

### Is CountTally free?

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

### Do Calc Engine or CountTally have ads?

CountTally shows ads; Calc Engine does not.

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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.*