# ChronosMap vs PDF Slim

The clearest difference is in-app purchases: ChronosMap at none against PDF Slim's 1. ChronosMap also leads on ads (none vs shown). PDF Slim's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. PDF Slim sells 1 one-off in-app purchase. ChronosMap asks for nothing beyond the download.

ChronosMap ships an update every 10 days, PDF Slim weekly. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ChronosMap | PDF Slim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-slim-reduce-pdf-size/id6787603119/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 34 MB | 14 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [洪霆 郝](https://appshunter.io/developer/1741449543) | [MBG Studio](https://appshunter.io/developer/1401126212) |

## What reviewers say

### ChronosMap

[App page](https://appshunter.io/ios/app/chronosmap/id6778398973)

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Slim

[App page](https://appshunter.io/ios/app/pdf-slim-reduce-pdf-size/id6787603119)

Reduce the size of your PDF files with adjustable quality settings. Save or share compressed documents directly from the application. Access detailed information about each PDF.

**Highlights:** Compress PDF files, Adjustable quality levels, Save compressed PDFs, Share instantly, View PDF details

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is ChronosMap free?

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

### Is PDF Slim free?

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

### Do ChronosMap or PDF Slim have ads?

PDF Slim shows ads; ChronosMap does not.

### Which is updated more often, ChronosMap or PDF Slim?

ChronosMap ships an update every 10 days, and PDF Slim weekly. Most recently, ChronosMap was updated on October 15, 2026 and PDF Slim on October 24, 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.*