# PolyU GreenCoin vs ECEAA

The clearest difference is ads: ECEAA at none against PolyU GreenCoin's shown. ECEAA also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (13.0 vs 15.1). On price, 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.

PolyU GreenCoin ships an update every 3 months, ECEAA every 2 weeks. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | PolyU GreenCoin | ECEAA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 78 MB | 125 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [Palmify](https://appshunter.io/developer/1719494206) |

## What reviewers say

### PolyU GreenCoin

[App page](https://appshunter.io/ios/app/polyu-greencoin/id1455168482)

**Features:** macOS Compatibility

**In-app purchases:** none


### ECEAA

[App page](https://appshunter.io/ios/app/eceaa/id6473687455)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is PolyU GreenCoin free?

PolyU GreenCoin is free to download, with no in-app purchases.

### Is ECEAA free?

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

### Do PolyU GreenCoin or ECEAA have ads?

PolyU GreenCoin shows ads; ECEAA does not.

### Which is updated more often, PolyU GreenCoin or ECEAA?

PolyU GreenCoin ships an update every 3 months, and ECEAA every 2 weeks. Most recently, PolyU GreenCoin was updated on September 28, 2026 and ECEAA on September 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.*