# O'der stack vs LFunCalc

The clearest difference is in-app purchases: LFunCalc at none against O'der stack's 3. LFunCalc also leads on iOS requirement (13.2 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

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

O'der stack ships an update every 3 months, LFunCalc every 5 months. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | O'der stack | LFunCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Size | 59 MB | 46 MB |
| Requires iOS | 15.6 | **13.2** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ICT Fractal Inc.](https://appshunter.io/developer/473613262) | [NOBORU IMAI](https://appshunter.io/developer/896071356) |

## 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 |


### LFunCalc

[App page](https://appshunter.io/ios/app/lfuncalc/id1501273046)

**Features:** Vision Pro support

**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 LFunCalc free?

LFunCalc is free to download, with no in-app purchases.

### Do O'der stack or LFunCalc have ads?

Neither O'der stack nor LFunCalc shows ads.

### Which is updated more often, O'der stack or LFunCalc?

O'der stack ships an update every 3 months, and LFunCalc every 5 months. Most recently, O'der stack was updated on September 13, 2026 and LFunCalc on September 9, 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.*