# ISO8583 Bitmap Calculator vs EZ OTA

The clearest difference is update cadence: EZ OTA at every 3 days against ISO8583 Bitmap Calculator's every 32 months. EZ OTA also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ISO8583 Bitmap Calculator ships an update every 32 months, EZ OTA every 3 days. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | ISO8583 Bitmap Calculator | EZ OTA |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 4 MB | 29 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dario Fanjul](https://appshunter.io/developer/607389536) | [文栋 顾](https://appshunter.io/developer/1460789214) |

## 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


### EZ OTA

[App page](https://appshunter.io/ios/app/ez-ota/id6636517694)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISO8583 Bitmap Calculator free?

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

### Is EZ OTA free?

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

### Do ISO8583 Bitmap Calculator or EZ OTA have ads?

Neither ISO8583 Bitmap Calculator nor EZ OTA shows ads.

### Which is updated more often, ISO8583 Bitmap Calculator or EZ OTA?

ISO8583 Bitmap Calculator ships an update every 32 months, and EZ OTA every 3 days. Most recently, ISO8583 Bitmap Calculator was updated on November 1, 2026 and EZ OTA on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*