# NBG CY 3DS vs Optim System app

The clearest difference is update cadence: Optim System app at every 9 days against NBG CY 3DS's every 4 months. NBG CY 3DS's advantage is iOS requirement (12.0 vs 15.1). 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.

NBG CY 3DS ships an update every 4 months, Optim System app every 9 days. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | NBG CY 3DS | Optim System app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Size | 48 MB | 44 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [National Bank of Greece](https://appshunter.io/developer/1491750002) | [Optim Systems, Ltd.](https://appshunter.io/developer/1713704866) |

## What reviewers say

### NBG CY 3DS

[App page](https://appshunter.io/ios/app/nbg-cy-3ds/id1546336120)

**In-app purchases:** none


### Optim System app

[App page](https://appshunter.io/ios/app/optim-system-app-weopsy/id6470450913)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NBG CY 3DS free?

NBG CY 3DS is free to download, with no in-app purchases.

### Is Optim System app free?

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

### Do NBG CY 3DS or Optim System app have ads?

Neither NBG CY 3DS nor Optim System app shows ads.

### Which is updated more often, NBG CY 3DS or Optim System app?

NBG CY 3DS ships an update every 4 months, and Optim System app every 9 days. Most recently, NBG CY 3DS was updated on October 11, 2026 and Optim System app on October 21, 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.*