# Fusion Calculator for iPad Lite vs O'der stack

The clearest difference is in-app purchases: Fusion Calculator for iPad Lite at none against O'der stack's 3. Fusion Calculator for iPad Lite also leads on iOS requirement (6.0 vs 15.6). O'der stack's advantage is update cadence (every 3 months vs every 17 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. O'der stack sells 3 one-off in-app purchases. Fusion Calculator for iPad Lite asks for nothing beyond the download.

Fusion Calculator for iPad Lite ships an update every 17 months, O'der stack every 3 months. The most recent releases landed on June 5, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Fusion Calculator for iPad Lite | O'der stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fusion-calculator-for-ipad-lite/id403513615/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 9 MB | 59 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Leo Rivas-Micoud](https://appshunter.io/developer/302776955) | [ICT Fractal Inc.](https://appshunter.io/developer/473613262) |

## What reviewers say

### Fusion Calculator for iPad Lite

[App page](https://appshunter.io/ios/app/fusion-calculator-for-ipad-lite/id403513615)

This app allows you to freely place calculated numbers anywhere on the screen. You can then drag these numbers back to perform further calculations like addition, subtraction, multiplication, and division. It offers a one-touch sum of all displayed numbers.

**Highlights:** Drag-and-drop number placement, Perform calculations with placed numbers, One-touch summation of all numbers, Save and reuse calculated values, Intuitive user interface

**Features:** macOS Compatibility

**In-app purchases:** none


### O'der stack

[App page](https://appshunter.io/ios/app/oder-stack/id1449798272)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free trial for 7 days. | Free | one-time |
| Activate for 1 month. | $0.99 | one-time |
| Activate for year. | $9.99 | one-time |


## Frequently asked questions

### Is Fusion Calculator for iPad Lite free?

Fusion Calculator for iPad Lite is free to download, with no in-app purchases.

### Is O'der stack free?

O'der stack is free to download, with in-app purchases available.

### Do Fusion Calculator for iPad Lite or O'der stack have ads?

Neither Fusion Calculator for iPad Lite nor O'der stack shows ads.

### Which is updated more often, Fusion Calculator for iPad Lite or O'der stack?

Fusion Calculator for iPad Lite ships an update every 17 months, and O'der stack every 3 months. Most recently, Fusion Calculator for iPad Lite was updated on June 5, 2026 and O'der stack on September 13, 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.*