# クロス積算電卓　エスティ２ vs noteSUM

The clearest difference is in-app purchases: クロス積算電卓　エスティ２ at none against noteSUM's 3. クロス積算電卓　エスティ２ also leads on ads (none vs shown). noteSUM's advantage is update cadence (monthly vs every 14 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. noteSUM sells 3 one-off in-app purchases. 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, noteSUM monthly. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | クロス積算電卓　エスティ２ | noteSUM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Monthly** |
| Size | 53 MB | 7 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KLASS Corporation](https://appshunter.io/developer/880017365) | [Kazuhiro Sawamura](https://appshunter.io/developer/620439638) |

## 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


### noteSUM

[App page](https://appshunter.io/ios/app/notesum/id1553539735)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number of History records | $0.99 | one-time |
| Number of Favorites | $0.99 | one-time |
| Hide Ads | $2.99 | one-time |


## 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 noteSUM free?

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

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

noteSUM shows ads; クロス積算電卓　エスティ２ does not.

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

クロス積算電卓　エスティ２ ships an update every 14 months, and noteSUM monthly. Most recently, クロス積算電卓　エスティ２ was updated on October 25, 2026 and noteSUM on October 10, 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.*