# Interest Calculator vs Ubox CB

The clearest difference is in-app purchases: Ubox CB at none against Interest Calculator's 1. Ubox CB also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Interest Calculator's advantage is update cadence (every 2 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Interest Calculator sells 1 one-off in-app purchase. Ubox CB asks for nothing beyond the download.

Interest Calculator ships an update every 2 weeks, Ubox CB every 5 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Interest Calculator | Ubox CB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (117 ratings)](https://appshunter.io/ios/app/interest-calculator-compound/id1578162162/reviews)** | — |
| Number of ratings | **117** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 36 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Miguel Varela Marcos](https://appshunter.io/developer/1523027791) | [ControlBox Corp.](https://appshunter.io/developer/468161899) |

## What reviewers say

### Interest Calculator

[App page](https://appshunter.io/ios/app/interest-calculator-compound/id1578162162)

Calculate compound interest and ROI with customizable settings for periods and tax rates. Visualize your investment growth with detailed charts and breakdowns. Generate PDF reports and access a web version for comprehensive financial planning.

**Highlights:** Customizable periods (years, months, weeks, days), Single or multiple tax rate calculations, Visual charts (pie, line, tax vs. inflation), Period-by-period breakdown, Inverse calculations for ROI, PDF report generation, Companion web version

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No ads | $4.99 | one-time |


### Ubox CB

[App page](https://appshunter.io/ios/app/ubox-cb/id6479729239)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interest Calculator free?

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

### Is Ubox CB free?

Ubox CB is free to download, with no in-app purchases.

### Do Interest Calculator or Ubox CB have ads?

Interest Calculator shows ads; Ubox CB does not.

### Which is updated more often, Interest Calculator or Ubox CB?

Interest Calculator ships an update every 2 weeks, and Ubox CB every 5 months. Most recently, Interest Calculator was updated on October 24, 2026 and Ubox CB on October 11, 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.*