# Max's Calculator vs BuyWhat

The clearest difference is in-app purchases: Max's Calculator at none against BuyWhat's 2. Max's Calculator also leads on ads (none vs shown) and iOS requirement (13.4 vs 16.6). On price, update cadence and device support there is nothing between them.

Both are free to download. BuyWhat sells 2 in-app purchases, starting at $1.99 per month. Max's Calculator asks for nothing beyond the download.

Max's Calculator ships an update every 2 weeks, BuyWhat fortnightly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Max's Calculator | BuyWhat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/maxs-calculator/id6618135955/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 24 MB | 79 MB |
| Requires iOS | **13.4** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Anthony Seung](https://appshunter.io/developer/1713664488) | [Yee Joe Leong](https://appshunter.io/developer/1873886635) |

## What reviewers say

### Max's Calculator

[App page](https://appshunter.io/ios/app/maxs-calculator/id6618135955)

This utility app offers four distinct calculator functions: standard, currency conversion, restaurant tax/tip calculation, and grocery price comparison. Users can also personalize the app's background.

**Highlights:** Standard calculator, Currency converter, Restaurant tax and tip calculator, Grocery food price calculator, Customizable background

**Features:** macOS Compatibility

**In-app purchases:** none


### BuyWhat

[App page](https://appshunter.io/ios/app/buywhat-expense-tracker/id6758603049)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BuyWhat PRO Monthly Subscription | $1.99 | per month |
| BuyWhat PRO - Yearly | $22.99 | per year |


## Frequently asked questions

### Is Max's Calculator free?

Max's Calculator is free to download, with no in-app purchases.

### Is BuyWhat free?

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

### Do Max's Calculator or BuyWhat have ads?

BuyWhat shows ads; Max's Calculator does not.

### Which is updated more often, Max's Calculator or BuyWhat?

Max's Calculator ships an update every 2 weeks, and BuyWhat fortnightly. Most recently, Max's Calculator was updated on November 4, 2026 and BuyWhat on October 31, 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.*