# クロス積算電卓・ロック解除　「エスティモバイル」 vs Saisunkun

The clearest difference is in-app purchases: クロス積算電卓・ロック解除　「エスティモバイル」 at none against Saisunkun's 1. クロス積算電卓・ロック解除　「エスティモバイル」 also leads on iOS requirement (9.0 vs 16.0). Saisunkun's advantage is update cadence (every 2 weeks vs every 13 months). On price, ads and device support 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・ロック解除　「エスティモバイル」 asks for nothing beyond the download.

クロス積算電卓・ロック解除　「エスティモバイル」 ships an update every 13 months, Saisunkun every 2 weeks. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | クロス積算電卓・ロック解除　「エスティモバイル」 | Saisunkun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Size | 14 MB | 18 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, 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・ロック解除　「エスティモバイル」

[App page](https://appshunter.io/ios/app/id880017362)

**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・ロック解除　「エスティモバイル」 free?

クロス積算電卓・ロック解除　「エスティモバイル」 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・ロック解除　「エスティモバイル」 or Saisunkun have ads?

Neither クロス積算電卓・ロック解除　「エスティモバイル」 nor Saisunkun shows ads.

### Which is updated more often, クロス積算電卓・ロック解除　「エスティモバイル」 or Saisunkun?

クロス積算電卓・ロック解除　「エスティモバイル」 ships an update every 13 months, and Saisunkun every 2 weeks. Most recently, クロス積算電卓・ロック解除　「エスティモバイル」 was updated on October 26, 2026 and Saisunkun on November 3, 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.*