# Objective Calculator vs Calculator AiO

The clearest difference is ads: Objective Calculator at none against Calculator AiO's shown. Objective Calculator also leads on ratings volume (19 vs 5) and iOS requirement (11.0 vs 18.0). Calculator AiO's advantage is rating (5.0 vs 4.7) and update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Objective Calculator sells 1 one-off in-app purchase and Calculator AiO sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Calculator AiO holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 19 and 5 respectively.

Objective Calculator ships an update every 3 weeks, Calculator AiO every 5 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Objective Calculator | Calculator AiO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (19 ratings)](https://appshunter.io/ios/app/objective-calculator/id1287000522/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/calculator-aio/id6451085002/reviews)** |
| Number of ratings | **19** | 5 |
| Positive reviews | 86.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 41 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thiago Anderson Martins](https://appshunter.io/developer/1287000521) | [Matteus Barhaido](https://appshunter.io/developer/1696503834) |

## What reviewers say

### Objective Calculator

[App page](https://appshunter.io/ios/app/objective-calculator/id1287000522)

This versatile calculator app offers a unique tabbed interface for managing multiple calculations simultaneously. It includes a scientific calculator, currency converter, and drawing/annotation capabilities for notes and reminders. Optimized for modern iOS devices, it provides real-time results and advanced history features.

**Highlights:** Tabbed interface for multiple calculations, Scientific calculator functions, Drawing and annotation notes, Real-time problem solving, Currency converter with 33 currencies, Advanced history management, Color themes and dark/light mode

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Objective Calculator Pro | $1.99 | one-time |


### Calculator AiO

[App page](https://appshunter.io/ios/app/calculator-aio/id6451085002)

This app offers a versatile calculator experience with multiple input methods including keypad, photo recognition, handwriting, and AI chat. It also features graphing, unit conversion, and a secure media vault for private files. Enjoy a clean, ad-free interface with customizable themes.

**Highlights:** Keypad calculator with history, Photo math for equation solving, AI chat for math assistance, Handwriting recognition, Graph plotting, Unit and currency converter, Secure media vault

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Member - Monthly | $8.99 | per month |
| Pro Member - Annually | $79.99 | per year |


## Frequently asked questions

### Is Objective Calculator free?

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

### Is Calculator AiO free?

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

### Which has better reviews, Objective Calculator or Calculator AiO?

Calculator AiO is rated higher. Objective Calculator averages 4.7 out of 5 from 19 ratings, while Calculator AiO averages 5.0 from 5 ratings.

### Do Objective Calculator or Calculator AiO have ads?

Calculator AiO shows ads; Objective Calculator does not.

### Which is updated more often, Objective Calculator or Calculator AiO?

Objective Calculator ships an update every 3 weeks, and Calculator AiO every 5 days. Most recently, Objective Calculator was updated on October 17, 2026 and Calculator AiO on October 11, 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.*