# Stock Position Calculator vs RulesFirst

The clearest difference is rating: RulesFirst at 5.0 against Stock Position Calculator's 4.4. RulesFirst also leads on in-app purchases (none vs 1) and ads (none vs shown). Stock Position Calculator's advantage is ratings volume (7 vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stock Position Calculator sells 1 one-off in-app purchase. RulesFirst asks for nothing beyond the download.

RulesFirst holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stock Position Calculator has 7 ratings behind it against 1, so its average is the more settled of the two.

Stock Position Calculator ships an update fortnightly, RulesFirst weekly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Stock Position Calculator | RulesFirst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/stock-position-calculator/id6449742943/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rulesfirst/id6804246648/reviews)** |
| Number of ratings | **7** | 1 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 65 MB | 39 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [alpinetic](https://appshunter.io/developer/1809610424) | [RulesFirst LLC](https://appshunter.io/developer/6804246650) |

## What reviewers say

### Stock Position Calculator

[App page](https://appshunter.io/ios/app/stock-position-calculator/id6449742943)

Calculate the optimal number of shares to buy based on your risk tolerance and capital. Input account balance, risk percentage, share price, and stop-loss to determine ideal position size for your investment strategy.

**Highlights:** Calculate ideal share quantity, Input account balance, Define risk percentage, Set stop-loss level, User-friendly interface

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $14.99 | one-time |


### RulesFirst

[App page](https://appshunter.io/ios/app/rulesfirst/id6804246648)

This application helps traders maintain discipline and manage risk by monitoring their trading behavior and reviewing rule breaks. It provides alerts and journaling tools to help users stay accountable to their trading plans and prevent small mistakes from escalating.

**Highlights:** Read-only broker-connected trade monitoring, Risk-stage alerts and behavioral warnings, Rule-break tracking and trade review, Daily risk and discipline visibility, Mobile alerts for trading events, Journaling and execution review tools

**In-app purchases:** none


## Frequently asked questions

### Is Stock Position Calculator free?

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

### Is RulesFirst free?

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

### Which has better reviews, Stock Position Calculator or RulesFirst?

RulesFirst is rated higher. Stock Position Calculator averages 4.4 out of 5 from 7 ratings, while RulesFirst averages 5.0 from 1 ratings.

### Do Stock Position Calculator or RulesFirst have ads?

Stock Position Calculator shows ads; RulesFirst does not.

### Which is updated more often, Stock Position Calculator or RulesFirst?

Stock Position Calculator ships an update fortnightly, and RulesFirst weekly. Most recently, Stock Position Calculator was updated on October 24, 2026 and RulesFirst on October 29, 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.*