# クロス積算電卓・ロック解除　「エスティモバイル」 vs Billma

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 Billma'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 ads (none vs shown) and iOS requirement (9.0 vs 12.0). Billma's advantage is update cadence (every 6 weeks vs every 13 months). On price and device support there is nothing between them.

Both are free to download. Billma sells 1 in-app purchase, starting at $4.99 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, Billma every 6 weeks. The most recent releases landed on November 6, 2026 and November 7, 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」 | Billma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 6 weeks** |
| Size | 14 MB | 41 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KLASS Corporation](https://appshunter.io/developer/880017365) | [ACTN K.K.](https://appshunter.io/developer/1519939443) |

## 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


### Billma

[App page](https://appshunter.io/ios/app/billma/id1519939441)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BillmaPlus | $4.99 | 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 Billma free?

Billma 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 Billma have ads?

Billma shows ads; クロス積算電卓・ロック解除　「エスティモバイル」 does not.

### 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 Billma?

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 Billma every 6 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 November 6, 2026 and Billma on November 7, 2026.

---

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