# Acute Calculator vs EngKit

The clearest difference is update cadence: Acute Calculator at every 2 days against EngKit's every 2 weeks. Acute Calculator also leads on iOS requirement (16.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Acute Calculator sells 3 one-off in-app purchases and EngKit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Acute Calculator ships an update every 2 days, EngKit every 2 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Acute Calculator | EngKit |
| --- | --- | --- |
| Price | Free | 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 5 MB |
| Requires iOS | **16.0** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Find App, Inc.](https://appshunter.io/developer/1666757711) | [Rodrigo Vivas](https://appshunter.io/developer/6813992944) |

## What reviewers say

### 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 |

**What reviewers like**

- ✨ Beautiful and artistic design
- 🚀 Advanced functionality beyond default
- 👍 Smooth animations and transitions
- 💡 Intuitive and user-friendly interface
- ✅ Replaces default calculator effectively

**What reviewers complain about**

- 🐛 Animation lag in history
- 🤔 Graph lacks numbers/functional purpose
- 💸 Calculus functions require payment
- ❓ Discount button crashes app
- 🐞 UI bugs and animations

**Reported bugs**

- Animation and UI bugs
- Discount button crashes app
- Animation lags and skips when sliding down history
- Calculations are incorrect
- Does not follow correct order of operations

**Requested features**

- Make app icon simpler/restrained
- Add units to graph
- Allow press and hold on graph lines for values
- Support Korean language
- Display commas while entering numbers


### EngKit

[App page](https://appshunter.io/ios/app/engkit/id6813992942)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $6.99 | one-time |


## Frequently asked questions

### Is Acute Calculator free?

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

### Is EngKit free?

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

### Do Acute Calculator or EngKit have ads?

Neither Acute Calculator nor EngKit shows ads.

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

Acute Calculator ships an update every 2 days, and EngKit every 2 weeks. Most recently, Acute Calculator was updated on October 16, 2026 and EngKit on October 14, 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.*