# ZappID vs OpsPlan LCT50 Calculator

The clearest difference is update cadence: ZappID at every 4 days against OpsPlan LCT50 Calculator's every 2 months. ZappID also leads on iOS requirement (12.0 vs 14.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ZappID ships an update every 4 days, OpsPlan LCT50 Calculator every 2 months. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | ZappID | OpsPlan LCT50 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/opsplan-lct50-calculator/id1610678922/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | — | Free |
| Size | 11 MB | 54 MB |
| Requires iOS | **12.0** | 14.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fredrik Petersson](https://appshunter.io/developer/555276018) | [Operation Plans Solutions, LLC](https://appshunter.io/developer/1610678924) |

## What reviewers say

### ZappID

[App page](https://appshunter.io/ios/app/zappid/id1455029820)

**Features:** macOS Compatibility

**In-app purchases:** none


### OpsPlan LCT50 Calculator

[App page](https://appshunter.io/ios/app/opsplan-lct50-calculator/id1610678922)

Calculate LCT50 times for chemical agent deployment missions. Define room dimensions, set time limits or munitions, and select specific agents to ensure team safety and mission success.

**Highlights:** Calculate LCT50 times, Define room dimensions, Set time limit or munitions, Select specific munitions, View time limit summary, Easy-to-use interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZappID free?

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

### Is OpsPlan LCT50 Calculator free?

OpsPlan LCT50 Calculator is free to download, with no in-app purchases.

### Do ZappID or OpsPlan LCT50 Calculator have ads?

Neither ZappID nor OpsPlan LCT50 Calculator shows ads.

### Which is updated more often, ZappID or OpsPlan LCT50 Calculator?

ZappID ships an update every 4 days, and OpsPlan LCT50 Calculator every 2 months. Most recently, ZappID was updated on October 19, 2026 and OpsPlan LCT50 Calculator on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*