# AOC CALCULATOR vs King Research

The clearest difference is in-app purchases: King Research at none against AOC CALCULATOR's 2. King Research also leads on iOS requirement (13.0 vs 15.0). AOC CALCULATOR's advantage is review sentiment (100% vs 85%). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. AOC CALCULATOR sells 2 one-off in-app purchases. King Research asks for nothing beyond the download.

AOC CALCULATOR ships an update every 2 weeks, King Research fortnightly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | AOC CALCULATOR | King Research |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 84.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | Free |
| Size | 18 MB | 54 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Raj Shah](https://appshunter.io/developer/1705209892) | [Vijay Sahu](https://appshunter.io/developer/1895810175) |

## What reviewers say

### AOC CALCULATOR

[App page](https://appshunter.io/ios/app/aoc-calculator/id6463865837)

This tool simplifies option trading by providing real-time option chain data, including reversal points, open interest, and volume. It's designed for both new and experienced traders to make informed decisions with an intuitive interface.

**Highlights:** Real-time option chain data, Reversal points calculation, Open interest and volume data, Implied volatility display, Intuitive user interface, Free to use

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AOC PRO | $4.99 | one-time |
| AOC PRO MAX | $29.99 | one-time |


### King Research

[App page](https://appshunter.io/ios/app/king-research/id6503350906)

Learn investing fundamentals with this app. Discover strong stocks, analyze companies, and enhance trading skills through educational videos and daily alerts. Get ahead with advanced prediction notifications.

**Highlights:** Stock filtering and discovery, In-depth stock analysis, Educational videos, Daily stock alerts, Event and webinar updates, Advance prediction alerts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AOC CALCULATOR free?

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

### Is King Research free?

King Research is free to download, with no in-app purchases.

### Do AOC CALCULATOR or King Research have ads?

Neither AOC CALCULATOR nor King Research shows ads.

### Which is updated more often, AOC CALCULATOR or King Research?

AOC CALCULATOR ships an update every 2 weeks, and King Research fortnightly. Most recently, AOC CALCULATOR was updated on October 24, 2026 and King Research on October 19, 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.*