# 不動産電卓 @返済くんCalc vs Greatweek.com

The clearest difference is in-app purchases: Greatweek.com at none against 不動産電卓 @返済くんCalc's 2. Greatweek.com also leads on update cadence (weekly vs every 3 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 不動産電卓 @返済くんCalc sells 2 in-app purchases, starting at $0.49 per 2 months. Greatweek.com asks for nothing beyond the download.

不動産電卓 @返済くんCalc ships an update every 3 months, Greatweek.com weekly. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 不動産電卓 @返済くんCalc | Greatweek.com |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/greatweekcom/id1662945960/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Freemium | **Free** |
| Size | 7 MB | 32 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ichiro tanioka](https://appshunter.io/developer/557079290) | [Great Week LLC](https://appshunter.io/developer/1599041995) |

## What reviewers say

### 不動産電卓 @返済くんCalc

[App page](https://appshunter.io/ios/app/calc/id806789471)

This app is a must-have calculation tool for real estate and housing sales professionals, also ideal for individuals simulating home purchases. It offers advanced features like reverse loan limit calculation and remaining balance calculation, with basic functions available for free.

**Highlights:** Reverse loan limit calculation, Remaining balance calculation, Brokerage fee calculation, Mortgage loan calculations, Area conversion (Tsubo ⇔ m2), Consumption tax calculation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO版へアップグレード | $0.49 | per 2 months |
| PRO版へアップグレード | $1.99 | per year |


### Greatweek.com

[App page](https://appshunter.io/ios/app/greatweekcom/id1662945960)

This app streamlines property development business management. It offers access to multiple lenders for project finance and includes innovative tools for expense management and bookkeeping.

**Highlights:** Project finance access, Expense management, Bookkeeping tools, Business management, Lender access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 不動産電卓 @返済くんCalc free?

不動産電卓 @返済くんCalc is free to download, with in-app purchases available.

### Is Greatweek.com free?

Greatweek.com is free to download, with no in-app purchases.

### Do 不動産電卓 @返済くんCalc or Greatweek.com have ads?

Neither 不動産電卓 @返済くんCalc nor Greatweek.com shows ads.

### Which is updated more often, 不動産電卓 @返済くんCalc or Greatweek.com?

不動産電卓 @返済くんCalc ships an update every 3 months, and Greatweek.com weekly. Most recently, 不動産電卓 @返済くんCalc was updated on September 9, 2026 and Greatweek.com on September 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.*