Comparison

Stock Position Calculator vs RulesFirst

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stock Position Calculator

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
Read full description

This application is a tool that is both powerful and user-friendly, suitable for both novice and seasoned investors. It assists investors in determining the ideal number of shares to purchase, taking into account their risk tolerance and the size of their capital. By inputting key variables such as their account balance, desired risk percentage, share price, and stop-loss level, they can easily define the position size most suited to their investment strategy.

About

RulesFirst

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
Read full description

RulesFirst is read-only trading discipline and risk-management software built to help traders follow the plans they already created. The app helps traders monitor behavior, review rule breaks, track risk, and stay aware of their trading process before small mistakes turn into larger problems. RulesFirst is designed for traders who want more structure around execution, discipline, journaling, and risk habits. Key features: • Read-only broker-connected trade monitoring • Risk-stage alerts and behavioral warnings • Planned, quick, and ghost trade workflows • Rule-break tracking and trade review • Daily risk and discipline visibility • Mobile alerts for important trading events • Journaling and execution review tools RulesFirst does not place trades, modify trades, route orders, cancel orders, provide trading signals, or give investment advice. It is not a broker, trading bot, or execution platform. RulesFirst helps traders stay accountable to their own process. The iOS app does not offer subscription purchase or subscription checkout. Users sign in with an existing RulesFirst account, and the app reflects the access status already associated with that account. The provided App Review account has full access and does not require a purchase or checkout.

Screenshots

Stock Position Calculator3 screens
RulesFirst4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 3 level
Stock Position Calculator versus RulesFirst: the parameters behind the verdict, then further details
ParameterStock Position CalculatorRulesFirst
PriceFreeFree
Rating4.4 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyFortnightlyWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size65 MB39 MB
Age rating4+17+
DeveloperalpineticRulesFirst LLC

Customer experience

Stock Position Calculator

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%

RulesFirst

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Stock Position Calculator

One-time1
  • Premium$14.99
None

RulesFirst

No in-app purchases

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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