# Calc Engine vs DataPocket

The clearest difference is update cadence: Calc Engine at daily against DataPocket's weekly. DataPocket's advantage is iOS requirement (16.4 vs 18). On price, ads, 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 DataPocket sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Calc Engine ships an update daily, DataPocket weekly. The most recent releases landed on August 31, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Calc Engine | DataPocket |
| --- | --- | --- |
| 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 | No |
| Update frequency | **Daily** | Weekly |
| Monetization | Free | — |
| Size | 17 MB | 24 MB |
| Requires iOS | 18 | **16.4** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [KENJIRO OBORA](https://appshunter.io/developer/1025407585) |

## 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 |


### DataPocket

[App page](https://appshunter.io/ios/app/datapocket/id6618158585)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| WebLink 5 Tickets | $4.99 | one-time |


## Frequently asked questions

### Is Calc Engine free?

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

### Is DataPocket free?

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

### Do Calc Engine or DataPocket have ads?

Neither Calc Engine nor DataPocket shows ads.

### Which is updated more often, Calc Engine or DataPocket?

Calc Engine ships an update daily, and DataPocket weekly. Most recently, Calc Engine was updated on August 31, 2026 and DataPocket on September 20, 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.*