# Acute Calculator vs PDF Lighter

The clearest difference is iOS requirement: Acute Calculator at 16.0 against PDF Lighter's 26.5. 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 PDF Lighter sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Acute Calculator | PDF Lighter |
| --- | --- | --- |
| 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 | — |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Find App, Inc.](https://appshunter.io/developer/1666757711) | [MANUEL NOVO LOPES](https://appshunter.io/developer/6789520870) |

## 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 |


### PDF Lighter

[App page](https://appshunter.io/ios/app/pdf-lighter/id6790327327)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $3.99 | one-time |
| Big tip | $3.99 | one-time |


## Frequently asked questions

### Is Acute Calculator free?

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

### Is PDF Lighter free?

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

### Do Acute Calculator or PDF Lighter have ads?

Neither Acute Calculator nor PDF Lighter shows ads.

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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.*