# KeePassLock vs Acute Calculator

The clearest difference is price: Acute Calculator at Free against KeePassLock's $3.99. Acute Calculator also leads on update cadence (every 2 days vs every 3 months). KeePassLock's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Acute Calculator is free to download; KeePassLock costs $3.99 up front. Acute Calculator sells 3 one-off in-app purchases. KeePassLock asks for nothing beyond the download.

KeePassLock ships an update every 3 months, Acute Calculator every 2 days. The most recent releases landed on September 6, 2026 and July 16, 2026 respectively.

## The numbers

| Metric | KeePassLock | Acute Calculator |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.9 (116 ratings)](https://appshunter.io/ios/app/acute-calculator/id6476837563/reviews)** |
| Number of ratings | — | **116** |
| Positive reviews | — | 94.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 16 MB |
| Requires iOS | 17.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Torsten Harz](https://appshunter.io/developer/929763678) | [Find App, Inc.](https://appshunter.io/developer/1666757711) |

## What reviewers say

### KeePassLock

[App page](https://appshunter.io/ios/app/keepasslock/id6456412131)

**Features:** Vision Pro support

**In-app purchases:** none


### Acute Calculator

[App page](https://appshunter.io/ios/app/acute-calculator/id6476837563)

This advanced graphing calculator offers a visual editor and supports over 30 functions. It includes features like a history tape, variable storage, and an intuitive palette system for complex calculations.

**Highlights:** Visual editor, 30+ functions supported, History tape, Store variables, Intuitive palette system

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acute Plus Limited-Time Offer | $3.49 | one-time |
| Acute Plus (For Students) | $4.99 | one-time |
| Acute Plus (One Time) | $6.99 | one-time |


## Frequently asked questions

### Is KeePassLock free?

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

### Is Acute Calculator free?

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

### Do KeePassLock or Acute Calculator have ads?

Neither KeePassLock nor Acute Calculator shows ads.

### Which is updated more often, KeePassLock or Acute Calculator?

KeePassLock ships an update every 3 months, and Acute Calculator every 2 days. Most recently, KeePassLock was updated on September 6, 2026 and Acute Calculator on July 16, 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.*