# Diff Checker vs Zency

The clearest difference is device support: Diff Checker at 4 against Zency's 2. Diff Checker also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Diff Checker sells 2 in-app purchases, starting at $7.99 per month and Zency sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Diff Checker ships an update fortnightly, Zency every 9 days. The most recent releases landed on September 30, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Diff Checker | Zency |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 79 MB | 72 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Edusoft Limited](https://appshunter.io/developer/1836364875) | [Tuan Hoang](https://appshunter.io/developer/1211587462) |

## What reviewers say

### Diff Checker

[App page](https://appshunter.io/ios/app/diff-checker-compare-text/id6753902567)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $7.99 | per month |
| Premium Subscription Yearly | $49.99 | per year |


### Zency

[App page](https://appshunter.io/ios/app/zency-smart-document-manager/id6761648637)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zency Pro Access | $39.00 | one-time |


## Frequently asked questions

### Is Diff Checker free?

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

### Is Zency free?

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

### Do Diff Checker or Zency have ads?

Neither Diff Checker nor Zency shows ads.

### Which is updated more often, Diff Checker or Zency?

Diff Checker ships an update fortnightly, and Zency every 9 days. Most recently, Diff Checker was updated on September 30, 2026 and Zency on September 27, 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.*