Bank Builder vs Calcu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bank Builder
This utility app assists players in constructing a bank of a specific amount for 18xx board games. It's designed to streamline the process of managing in-game finances.
- Build bank of specific amount
- Designed for 18xx board games
- Chipset financial management
- Free to use
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A free app to help with building a bank of a specific amount from a chip set. Useful when building a bank for 18xx board games.
Calcu
This unofficial player aid assists with hit calculations for robot battle games. Easily input values, sum categories, and calculate hit probability based on dice rolls. Customize your experience with multiple color options.
- Input values for categories and robots
- Sum all category values
- Calculate hit probability
- 2d6 dice roll simulation
- Multiple color themes
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This is an unofficial player aid to help facilitate hit calculations for players interested in robot battles. It's a fun way to engage and plan out attacks on the tabletop Key Features - Ability to input values easily for each category or GATOR - Provide a total number of all categories - Calculate the hit probability based on the 2d6 dice roll - Multiple colors to choose from! -Cluster and Hit Location reference tables
Screenshots
Verdict
The clearest difference is rating: Calcu at 5.0 against Bank Builder's 4.0. Calcu also leads on in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 22 months). On price, ads, monetization model and device support 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
Both are free to download. Bank Builder sells 1 one-off in-app purchase. Calcu asks for nothing beyond the download.
Calcu holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Bank Builder ships an update every 22 months, Calcu every 6 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.
| Parameter | Bank Builder | Calcu |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 22 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 23 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Magnus Orn Gylfason | Joe Watson |
Customer experience
Bank Builder
Calcu
In-app purchases
Bank Builder
- Buy me a coffee$3.99
Calcu
No in-app purchases









