# Calcularium vs VendBuddy

The clearest difference is ads: VendBuddy at none against Calcularium's shown. VendBuddy also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.6). Calcularium's advantage is ratings volume (2.2K vs 3). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calcularium sells 7 in-app purchases, starting at $3.99 per month and VendBuddy sells 3 in-app purchases, starting at $15.00 per month. Whichever you choose, the download price is not the number that matters.

VendBuddy holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calcularium has 2.2K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of Calcularium's written reviews are positive against 100% of VendBuddy's.

Calcularium ships an update fortnightly, VendBuddy every 10 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Calcularium | VendBuddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.2K ratings)](https://appshunter.io/ios/app/calcularium/id824113384/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vendbuddy/id6760195941/reviews)** |
| Number of ratings | **2.2K** | 3 |
| Positive reviews | 67.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 52 MB | 77 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [InVooDoo LLC](https://appshunter.io/developer/1173246186) | [VendBuddy](https://appshunter.io/developer/6807596499) |

## What reviewers say

### Calcularium

[App page](https://appshunter.io/ios/app/calcularium/id824113384)

This app offers real-time calculations, allowing you to see results as you type. It goes beyond basic arithmetic with advanced functions, unit conversions, and customizable expressions, acting as a powerful helper for complex calculations.

**Highlights:** Reactive Calculations, Voice Control (Siri), Script and Photo Input, Multi-Level Sub-Calculations, Editable History, Unit and Currency Conversion, Customizable Functions

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Almighty Version | $3.99 | per month |
| Almighty Version | $4.99 | per 6 months |
| InVooDoo One | $5.99 | per month |
| Almighty Version | $29.99 | per year |
| Unlock Pro Version | $199.99 | one-time |
| Lifetime Almighty Version | $199.99 | one-time |
| Remove Ads Only | $199.99 | one-time |

**What reviewers like**

- 🚀 Powerful and feature-packed
- 👍 Easy to use with great tutorials
- 🎨 Beautiful and customizable design
- 💡 Innovative features like real-time calculation
- 🙌 Excellent value for money

**What reviewers complain about**

- 🔍 Confusing or unintuitive interface
- 📢 Excessive advertisements
- 🐛 Calculation errors or inconsistencies
- 🔒 Limited functionality in free version

**Reported bugs**

- Crashes or freezes on certain devices
- Incompatibility with older iOS versions
- Issues with calculator widget functionality

**Requested features**

- Add basic calculator functions like equal and clear buttons
- Improve unit conversion and scientific functions
- Integrate with Shortcuts and Siri
- Provide more customization options


### VendBuddy

[App page](https://appshunter.io/ios/app/vendbuddy/id6760195941)

This app helps trading card vendors manage their business at events. It offers tools for building deals, scanning cards, tracking inventory, and analyzing event profitability. Keep your business organized and focus on making sales.

**Highlights:** Deal Builder with real-time pricing, Automatic card identification via camera scan, Comprehensive inventory management, Event profit and loss tracking, Portfolio value dashboard, Support for 5 major trading card games, Graded card pricing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $15.00 | per month |
| Pro | $30.00 | per month |
| Business | $80.00 | per month |


## Frequently asked questions

### Is Calcularium free?

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

### Is VendBuddy free?

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

### Which has better reviews, Calcularium or VendBuddy?

VendBuddy is rated higher. Calcularium averages 4.6 out of 5 from 2.2K ratings, while VendBuddy averages 5.0 from 3 ratings.

### Do Calcularium or VendBuddy have ads?

Calcularium shows ads; VendBuddy does not.

### Which is updated more often, Calcularium or VendBuddy?

Calcularium ships an update fortnightly, and VendBuddy every 10 days. Most recently, Calcularium was updated on October 15, 2026 and VendBuddy on October 7, 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.*