# クロス積算電卓　エスティ２ vs Saisunkun

The clearest difference is in-app purchases: クロス積算電卓　エスティ２ at none against Saisunkun's 1. Saisunkun's advantage is update cadence (every 2 weeks vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Saisunkun sells 1 in-app purchase, starting at $2.99 per month. クロス積算電卓　エスティ２ asks for nothing beyond the download.

クロス積算電卓　エスティ２ ships an update every 14 months, Saisunkun every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | クロス積算電卓　エスティ２ | Saisunkun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 weeks** |
| Size | 53 MB | 18 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KLASS Corporation](https://appshunter.io/developer/880017365) | [masafumi etoh](https://appshunter.io/developer/1689334069) |

## What reviewers say

### クロス積算電卓　エスティ２

[App page](https://appshunter.io/ios/app/id1525855293)

**Features:** macOS Compatibility

**In-app purchases:** none


### Saisunkun

[App page](https://appshunter.io/ios/app/saisunkun/id6449476032)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Saisunkun premium 月額プラン | $2.99 | per month |


## Frequently asked questions

### Is クロス積算電卓　エスティ２ free?

クロス積算電卓　エスティ２ is free to download, with no in-app purchases.

### Is Saisunkun free?

Saisunkun is free to download, with in-app purchases available.

### Do クロス積算電卓　エスティ２ or Saisunkun have ads?

Neither クロス積算電卓　エスティ２ nor Saisunkun shows ads.

### Which is updated more often, クロス積算電卓　エスティ２ or Saisunkun?

クロス積算電卓　エスティ２ ships an update every 14 months, and Saisunkun every 2 weeks. Most recently, クロス積算電卓　エスティ２ was updated on October 25, 2026 and Saisunkun 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.*