# Finance Calculator Plus vs Fast Interest Calculator

The clearest difference is price: Fast Interest Calculator at Free against Finance Calculator Plus's $2.99. Fast Interest Calculator also leads on update cadence (every 6 weeks vs every 23 months) and iOS requirement (12.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Fast Interest Calculator is free to download; Finance Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Finance Calculator Plus ships an update every 23 months, Fast Interest Calculator every 6 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Finance Calculator Plus | Fast Interest Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 6 weeks** |
| Size | 1 MB | 51 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [Camilo Ortegon](https://appshunter.io/developer/993583183) |

## What reviewers say

### Finance Calculator Plus

[App page](https://appshunter.io/ios/app/finance-calculator-plus/id1636998293)

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

**In-app purchases:** none


### Fast Interest Calculator

[App page](https://appshunter.io/ios/app/fast-interest-calculator/id6475480484)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Finance Calculator Plus free?

Finance Calculator Plus costs $2.99, with no in-app purchases.

### Is Fast Interest Calculator free?

Fast Interest Calculator is free to download, with no in-app purchases.

### Do Finance Calculator Plus or Fast Interest Calculator have ads?

Neither Finance Calculator Plus nor Fast Interest Calculator shows ads.

### Which is updated more often, Finance Calculator Plus or Fast Interest Calculator?

Finance Calculator Plus ships an update every 23 months, and Fast Interest Calculator every 6 weeks. Most recently, Finance Calculator Plus was updated on October 25, 2026 and Fast Interest Calculator on October 27, 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.*