# DOC%ZINS vs SimplyTHG

The clearest difference is price: SimplyTHG at Free against DOC%ZINS's $11.99. SimplyTHG also leads on update cadence (every 2 months vs every 5 months). DOC%ZINS's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On in-app purchases and device support there is nothing between them.

SimplyTHG is free to download; DOC%ZINS costs $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DOC%ZINS ships an update every 5 months, SimplyTHG every 2 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DOC%ZINS | SimplyTHG |
| --- | --- | --- |
| Price | $11.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 24 MB | 96 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FinTeachWorld GmbH & Co. KG](https://appshunter.io/developer/1717763542) | [SimplyCharge GmbH](https://appshunter.io/developer/1865726014) |

## What reviewers say

### DOC%ZINS

[App page](https://appshunter.io/ios/app/doczins/id1107519108)

This app provides financial professionals with a powerful digital calculator for fast, accurate financial calculations. It offers various tools for interest rates, repayment, cash flow, savings models, and investment analysis, enabling users to confidently answer financial questions in real-time.

**Highlights:** Nominal and effective interest rate calculations, Dynamic and repayment calculations, Total cost and interest charge overview, Three-stage cash flow analysis, Dynamic savings and pension models, Multiple financing options, Investment and net present value calculations

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

**In-app purchases:** none


### SimplyTHG

[App page](https://appshunter.io/ios/app/simplythg/id6757274546)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DOC%ZINS free?

DOC%ZINS costs $11.99, with no in-app purchases.

### Is SimplyTHG free?

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

### Do DOC%ZINS or SimplyTHG have ads?

SimplyTHG shows ads; DOC%ZINS does not.

### Which is updated more often, DOC%ZINS or SimplyTHG?

DOC%ZINS ships an update every 5 months, and SimplyTHG every 2 months. Most recently, DOC%ZINS was updated on October 26, 2026 and SimplyTHG on October 25, 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.*