# Bubble Level vs PDFs

The clearest difference is ads: PDFs at none against Bubble Level's shown. PDFs also leads on update cadence (weekly vs every 2 weeks). Bubble Level's advantage is review sentiment (75% vs 50%). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Bubble Level sells 3 in-app purchases, starting at $1.99 per 7 days and PDFs sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Bubble Level against 4.8 for PDFs. Both are backed by a comparable volume of ratings — 60 and 75 respectively. Written reviews are what separate them: 75% of Bubble Level's written reviews are positive against 50% of PDFs's.

Bubble Level ships an update every 2 weeks, PDFs weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Bubble Level | PDFs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (60 ratings)](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224/reviews)** | [4.8 (75 ratings)](https://appshunter.io/ios/app/pdfs-merge-and-split/id6742355160/reviews) |
| Number of ratings | 60 | **75** |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 16 MB | 36 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Andy Sutanto](https://appshunter.io/developer/1659282966) | [HANSIFY TECHNOLOGIES](https://appshunter.io/developer/1814646308) |

## What reviewers say

### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224)

This tool helps you ensure surfaces are perfectly horizontal or vertical using various measurement modes. It offers features like angle locking, calibration for accuracy, and an audible indicator for precise leveling.

**Highlights:** Multiple leveling modes (Circle, Vertical, Horizontal, Mix), Lock current angle feature, Calibration for accurate readings, Audible indicator for perfect leveling, User-friendly interface, Angle locking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Level Pro | $1.99 | per 7 days |
| Spirit Level Pro | $19.99 | per year |
| Waterpas Pro - Waterpass | $39.99 | one-time |


### PDFs

[App page](https://appshunter.io/ios/app/pdfs-merge-and-split/id6742355160)

This app allows you to easily combine, split, secure, and customize PDF documents. It offers features like watermarking, page reordering, and password protection, all while working offline for enhanced privacy and speed.

**Highlights:** Merge multiple PDF files, Split large files or extract pages, Lock and unlock PDFs with passwords, Add custom text or image watermarks, Organize, reorder, and rotate pages, Offline processing for privacy

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Yearly Plan | $9.99 | per year |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Bubble Level free?

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

### Is PDFs free?

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

### Which has better reviews, Bubble Level or PDFs?

Bubble Level is rated higher. Bubble Level averages 4.8 out of 5 from 60 ratings, while PDFs averages 4.8 from 75 ratings.

### Do Bubble Level or PDFs have ads?

Bubble Level shows ads; PDFs does not.

### Which is updated more often, Bubble Level or PDFs?

Bubble Level ships an update every 2 weeks, and PDFs weekly. Most recently, Bubble Level was updated on November 3, 2026 and PDFs on October 30, 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.*