# FlowLock vs PDF Compressor

The clearest difference is ads: FlowLock at none against PDF Compressor's shown. FlowLock also leads on update cadence (daily vs every 6 days) and iOS requirement (15.0 vs 17.0). 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.

FlowLock ships an update daily, PDF Compressor every 6 days. The most recent releases landed on October 10, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | FlowLock | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/flowlock/id6774933420/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 6 days |
| Monetization | Free | — |
| Size | 2 MB | 7 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Shaw](https://appshunter.io/developer/6774933422) | [Jeny Goentoro](https://appshunter.io/developer/6774213231) |

## What reviewers say

### FlowLock

[App page](https://appshunter.io/ios/app/flowlock/id6774933420)

Enhance your concentration by blocking distracting websites within Safari. Initiate focus sessions to prevent access to social media and video platforms. A special Tunnel Mode allows viewing specific content from blocked sites without enabling further browsing.

**Highlights:** Block distracting websites in Safari, Initiate focus sessions, Tunnel Mode for specific content viewing, Prevent access to social media and video sites

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

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor/id6814202940)

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

**In-app purchases:** none


## Frequently asked questions

### Is FlowLock free?

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

### Is PDF Compressor free?

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

### Do FlowLock or PDF Compressor have ads?

PDF Compressor shows ads; FlowLock does not.

### Which is updated more often, FlowLock or PDF Compressor?

FlowLock ships an update daily, and PDF Compressor every 6 days. Most recently, FlowLock was updated on October 10, 2026 and PDF Compressor on October 26, 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.*