# Off vs PDF Studio(Pro)

The clearest difference is price: Off at Free against PDF Studio(Pro)'s $2.99. PDF Studio(Pro)'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Off is free to download; PDF Studio(Pro) costs $2.99 up front. Off sells 1 one-off in-app purchase. PDF Studio(Pro) asks for nothing beyond the download.

Off ships an update every 4 months, PDF Studio(Pro) every 2 days. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Off | PDF Studio(Pro) |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.6 (763 ratings)](https://appshunter.io/ios/app/off-road-inclinometer/id1489831780/reviews)** | — |
| Number of ratings | **763** | — |
| Positive reviews | 77.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 42 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joaquin Tare](https://appshunter.io/developer/1489831779) | [Hrishi Suthar](https://appshunter.io/developer/1660005858) |

## What reviewers say

### Off

[App page](https://appshunter.io/ios/app/off-road-inclinometer/id1489831780)

Monitor your vehicle's pitch and roll angles while off-roading. Features include customizable vehicles, alarms, and data logging for analysis. Offers a smooth user experience with a clean, relevant display.

**Highlights:** Read pitch and roll values, Customizable vehicle profiles, Pitch and roll alarms, Data logging and CSV export, Integrated compass, Themable interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock features | $3.99 | one-time |

**What reviewers like**

- 👍 Clean, simple, and professional interface
- ✅ Accurate incline and camber measurements
- 💰 Affordable premium version ($3) with no subscription
- 🎨 Customizable vehicle graphics and icons
- ⚙️ Easy zero/calibration reset functionality

**What reviewers complain about**

- 🐛 Inconsistent and inaccurate readings
- 📱 Intrusive ads in free version
- ⚠️ Occasional false/erratic measurements
- 🎨 Limited vehicle design options
- 📊 Basic graphics quality

**Reported bugs**

- Scam/virus warning pop-ups appearing on second use
- Slope percentage cannot be disabled despite settings
- Alarms set to 30 degrees produce no audible or visual feedback
- Inconsistent measurement accuracy requiring multiple resets
- Ad interruptions causing screen blanks during app use

**Requested features**

- CarPlay support
- Split View multitasking support
- Additional vehicle models (Jeep XJ, Bronco, Land Rover Discovery 2, Toyota Landcruiser 80/76 series)
- Bicycle and motorcycle designs
- Altitude reading display


### PDF Studio(Pro)

[App page](https://appshunter.io/ios/app/pdf-studiopro/id6757748809)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Off free?

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

### Is PDF Studio(Pro) free?

PDF Studio(Pro) costs $2.99, with no in-app purchases.

### Do Off or PDF Studio(Pro) have ads?

Off shows ads; PDF Studio(Pro) does not.

### Which is updated more often, Off or PDF Studio(Pro)?

Off ships an update every 4 months, and PDF Studio(Pro) every 2 days. Most recently, Off was updated on October 19, 2026 and PDF Studio(Pro) 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.*