# DECAY AI Subscription Tracker vs ZenPDF

The clearest difference is price: ZenPDF at Free against DECAY AI Subscription Tracker's $1.99. ZenPDF also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.6). DECAY AI Subscription Tracker's advantage is ads (none vs shown). On device support there is nothing between them.

ZenPDF is free to download; DECAY AI Subscription Tracker costs $1.99 up front. DECAY AI Subscription Tracker sells 1 one-off in-app purchase. ZenPDF asks for nothing beyond the download.

## The numbers

| Metric | DECAY AI Subscription Tracker | ZenPDF |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 3 MB | 62 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aneesh Pradeep](https://appshunter.io/developer/1836157821) | [Haileslassie Lilay Desalegn](https://appshunter.io/developer/1841785547) |

## What reviewers say

### DECAY AI Subscription Tracker

[App page](https://appshunter.io/ios/app/decay-ai-subscription-tracker/id6773772344)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DECAY Pro Unlock | $9.99 | one-time |


### ZenPDF

[App page](https://appshunter.io/ios/app/zenpdf-pdf-tools-and-scanner/id6785234912)

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

**In-app purchases:** none


## Frequently asked questions

### Is DECAY AI Subscription Tracker free?

DECAY AI Subscription Tracker costs $1.99, and also offers in-app purchases.

### Is ZenPDF free?

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

### Do DECAY AI Subscription Tracker or ZenPDF have ads?

ZenPDF shows ads; DECAY AI Subscription Tracker does not.

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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.*