# O'der stack vs Calculator with History ⁺

The clearest difference is in-app purchases: Calculator with History ⁺ at none against O'der stack's 3. Calculator with History ⁺ also leads on update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

O'der stack ships an update every 3 months, Calculator with History ⁺ weekly. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | O'der stack | Calculator with History ⁺ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 59 MB | 2 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ICT Fractal Inc.](https://appshunter.io/developer/473613262) | [RUNBIAO PENG](https://appshunter.io/developer/1893535255) |

## What reviewers say

### 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 |


### Calculator with History ⁺

[App page](https://appshunter.io/ios/app/calculator-with-history/id6762247121)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is O'der stack free?

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

### Is Calculator with History ⁺ free?

Calculator with History ⁺ is free to download, with no in-app purchases.

### Do O'der stack or Calculator with History ⁺ have ads?

Neither O'der stack nor Calculator with History ⁺ shows ads.

### Which is updated more often, O'der stack or Calculator with History ⁺?

O'der stack ships an update every 3 months, and Calculator with History ⁺ weekly. Most recently, O'der stack was updated on November 6, 2026 and Calculator with History ⁺ on October 25, 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.*