# ISO8583 Bitmap Calculator vs Combinations & Probabilities

The clearest difference is in-app purchases: ISO8583 Bitmap Calculator at none against Combinations & Probabilities's 1. ISO8583 Bitmap Calculator also leads on ads (none vs shown) and iOS requirement (15.0 vs 26.0). Combinations & Probabilities's advantage is update cadence (weekly vs every 32 months). On price and device support there is nothing between them.

Both are free to download. Combinations & Probabilities sells 1 one-off in-app purchase. ISO8583 Bitmap Calculator asks for nothing beyond the download.

ISO8583 Bitmap Calculator ships an update every 32 months, Combinations & Probabilities weekly. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | ISO8583 Bitmap Calculator | Combinations & Probabilities |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/iso8583-bitmap-calculator/id607389533/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 32 months | **Weekly** |
| Monetization | Free | — |
| Size | 4 MB | 33 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Dario Fanjul](https://appshunter.io/developer/607389536) | [Joao Carrion](https://appshunter.io/developer/1044104256) |

## What reviewers say

### ISO8583 Bitmap Calculator

[App page](https://appshunter.io/ios/app/iso8583-bitmap-calculator/id607389533)

This utility helps you understand active data elements within ISO8583 messages by visualizing the bitmap. Easily enable or disable fields to see the updated bitmap representation. Supports primary, secondary, and tertiary bitmaps.

**Highlights:** Visualize active data elements, Enable/disable fields, Update bitmap in real-time, Support for primary bitmaps, Support for secondary bitmaps, Support for tertiary bitmaps

**Features:** macOS Compatibility

**In-app purchases:** none


### Combinations & Probabilities

[App page](https://appshunter.io/ios/app/combinations-and-probabilities/id6758729922)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C&P Pro | $2.99 | one-time |


## Frequently asked questions

### Is ISO8583 Bitmap Calculator free?

ISO8583 Bitmap Calculator is free to download, with no in-app purchases.

### Is Combinations & Probabilities free?

Combinations & Probabilities is free to download, with in-app purchases available.

### Do ISO8583 Bitmap Calculator or Combinations & Probabilities have ads?

Combinations & Probabilities shows ads; ISO8583 Bitmap Calculator does not.

### Which is updated more often, ISO8583 Bitmap Calculator or Combinations & Probabilities?

ISO8583 Bitmap Calculator ships an update every 32 months, and Combinations & Probabilities weekly. Most recently, ISO8583 Bitmap Calculator was updated on October 14, 2026 and Combinations & Probabilities 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.*