# Harfer vs Poly Full

The clearest difference is in-app purchases: Poly Full at none against Harfer's 4. Poly Full also leads on update cadence (every 5 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Harfer sells 4 one-off in-app purchases. Poly Full asks for nothing beyond the download.

Harfer ships an update every 2 weeks, Poly Full every 5 days. The most recent releases landed on December 4, 2025 and September 30, 2026 respectively.

## The numbers

| Metric | Harfer | Poly Full |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 85 MB | 169 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ETREXIO DIGITAL SOLUTIONS BILISIM VE ILETISIM TEKNOLOJILERI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1397155283) | [KOHEI OKADA](https://appshunter.io/developer/1664622844) |

## What reviewers say

### Harfer

[App page](https://appshunter.io/ios/app/harfer/id1620694017)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Harfer Token | $0.99 | one-time |
| 50 Harfer Token | $1.99 | one-time |
| 100 Harfer Token | $2.99 | one-time |
| Remove Ads | $4.99 | one-time |


### Poly Full

[App page](https://appshunter.io/ios/app/poly-full-spot-the-difference/id6742448835)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Harfer free?

Harfer is free to download, with in-app purchases available.

### Is Poly Full free?

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

### Do Harfer or Poly Full have ads?

Both Harfer and Poly Full show ads.

### Which is updated more often, Harfer or Poly Full?

Harfer ships an update every 2 weeks, and Poly Full every 5 days. Most recently, Harfer was updated on December 4, 2025 and Poly Full on September 30, 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.*