# BLuE PDF Editor vs THERble

The clearest difference is update cadence: BLuE PDF Editor at every 5 months against THERble's every 16 months. THERble's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BLuE PDF Editor ships an update every 5 months, THERble every 16 months. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | BLuE PDF Editor | THERble |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 16 months |
| Size | 18 MB | 46 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ANEST TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1622750529) | [SHIN NIPPON AIR TECHNOLOGIES CO.,LTD.](https://appshunter.io/developer/1526286874) |

## What reviewers say

### BLuE PDF Editor

[App page](https://appshunter.io/ios/app/blue-pdf-editor/id1625254937)

**Features:** Vision Pro support

**In-app purchases:** none


### THERble

[App page](https://appshunter.io/ios/app/therble/id1630881111)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BLuE PDF Editor free?

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

### Is THERble free?

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

### Do BLuE PDF Editor or THERble have ads?

Neither BLuE PDF Editor nor THERble shows ads.

### Which is updated more often, BLuE PDF Editor or THERble?

BLuE PDF Editor ships an update every 5 months, and THERble every 16 months. Most recently, BLuE PDF Editor was updated on October 17, 2026 and THERble on October 3, 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.*