# 【LITE版】２級土木施工管理(土木) 30日合格プログラム vs Heron's Formula Calculator

The clearest difference is price: 【LITE版】２級土木施工管理(土木) 30日合格プログラム at Free against Heron's Formula Calculator's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

【LITE版】２級土木施工管理(土木) 30日合格プログラム is free to download; Heron's Formula Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

【LITE版】２級土木施工管理(土木) 30日合格プログラム ships an update every 7 months, Heron's Formula Calculator every 12 months. The most recent releases landed on October 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 【LITE版】２級土木施工管理(土木) 30日合格プログラム | Heron's Formula Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 12 months |
| Monetization | — | Paid |
| Size | 25 MB | 3 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ReCorrect Inc.](https://appshunter.io/developer/1141646408) | [kotobaz](https://appshunter.io/developer/1634727152) |

## What reviewers say

### 【LITE版】２級土木施工管理(土木) 30日合格プログラム

[App page](https://appshunter.io/ios/app/lite-30/id1436575581)

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

**In-app purchases:** none


### Heron's Formula Calculator

[App page](https://appshunter.io/ios/app/herons-formula-calculator/id1634727150)

Calculate the area of any triangle using only the lengths of its three sides. Simply input the side lengths and get an instant result.

**Highlights:** Calculate triangle area, Input three side lengths, Instant calculation results, Simple user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is 【LITE版】２級土木施工管理(土木) 30日合格プログラム free?

【LITE版】２級土木施工管理(土木) 30日合格プログラム is free to download, with no in-app purchases.

### Is Heron's Formula Calculator free?

Heron's Formula Calculator costs $2.99, with no in-app purchases.

### Do 【LITE版】２級土木施工管理(土木) 30日合格プログラム or Heron's Formula Calculator have ads?

Neither 【LITE版】２級土木施工管理(土木) 30日合格プログラム nor Heron's Formula Calculator shows ads.

### Which is updated more often, 【LITE版】２級土木施工管理(土木) 30日合格プログラム or Heron's Formula Calculator?

【LITE版】２級土木施工管理(土木) 30日合格プログラム ships an update every 7 months, and Heron's Formula Calculator every 12 months. Most recently, 【LITE版】２級土木施工管理(土木) 30日合格プログラム was updated on October 11, 2026 and Heron's Formula Calculator on October 30, 2026.

---

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