# Simple Compound Interest vs ZeiCal

The clearest difference is ads: ZeiCal at none against Simple Compound Interest's shown. ZeiCal also leads on update cadence (weekly vs every 6 months) and iOS requirement (15.1 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple Compound Interest ships an update every 6 months, ZeiCal weekly. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Simple Compound Interest | ZeiCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (23 ratings)](https://appshunter.io/ios/app/simple-compound-interest/id1020564831/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 5 MB | 39 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stack3](https://appshunter.io/developer/375916874) | [JUNGLAE JO](https://appshunter.io/developer/6780321351) |

## What reviewers say

### Simple Compound Interest

[App page](https://appshunter.io/ios/app/simple-compound-interest/id1020564831)

Easily calculate the future value of your investments. Input your initial capital, monthly contributions, annual interest rate, and investment duration to see your projected final return, total invested amount, and growth rate. Save multiple scenarios and view monthly progress.

**Highlights:** Calculate final return, Calculate total investment amount, Calculate return rate, Save investment conditions, Show monthly increase

**Features:** Vision Pro support

**In-app purchases:** none


### ZeiCal

[App page](https://appshunter.io/ios/app/zeical/id6780321349)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Compound Interest free?

Simple Compound Interest is free to download, with no in-app purchases.

### Is ZeiCal free?

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

### Do Simple Compound Interest or ZeiCal have ads?

Simple Compound Interest shows ads; ZeiCal does not.

### Which is updated more often, Simple Compound Interest or ZeiCal?

Simple Compound Interest ships an update every 6 months, and ZeiCal weekly. Most recently, Simple Compound Interest was updated on October 2, 2026 and ZeiCal on October 7, 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.*