# BauCalc vs KeyNook

The clearest difference is price: BauCalc at Free against KeyNook's $3.99. BauCalc also leads on iOS requirement (17.5 vs 26.0). KeyNook's advantage is update cadence (every 5 days vs every 26 months). On ads, in-app purchases and device support there is nothing between them.

BauCalc is free to download; KeyNook costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BauCalc ships an update every 26 months, KeyNook every 5 days. The most recent releases landed on October 6, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | BauCalc | KeyNook |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 5 days** |
| Size | 1 MB | 4 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [Albert Frank](https://appshunter.io/developer/1523866321) | [Stanislaw Schoenberg](https://appshunter.io/developer/333176382) |

## What reviewers say

### BauCalc

[App page](https://appshunter.io/ios/app/baucalc/id6503719713)

**Features:** macOS Compatibility

**In-app purchases:** none


### KeyNook

[App page](https://appshunter.io/ios/app/keynook-passwordmanager/id6782906800)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BauCalc free?

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

### Is KeyNook free?

KeyNook costs $3.99, with no in-app purchases.

### Do BauCalc or KeyNook have ads?

Neither BauCalc nor KeyNook shows ads.

### Which is updated more often, BauCalc or KeyNook?

BauCalc ships an update every 26 months, and KeyNook every 5 days. Most recently, BauCalc was updated on October 6, 2026 and KeyNook on September 26, 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.*