Comparison

Bubble Level vs PDFs

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bubble Level

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
Read full description

Ensure Your Surfaces Are Perfectly Horizontal or Vertical with Bubble Level app. There are four modes that you can choose: Circle Level: Simultaneously measure the horizontal and vertical angles. Vertical Level: Ideal for ensuring walls and other vertical surfaces are perfectly vertical. Horizontal Level: Perfect for checking that tables, floors, and other horizontal surfaces are perfectly horizontal. Mix Mode: All-in-one display featuring circle, vertical, and horizontal levels. Lock the Angle: Need to maintain a specific measurement? Use our "Lock the Angle" feature to freeze the current angle. Calibrate for Accuracy: Does your phone case or camera bump interfere with the leveling? Our calibration feature allows you to zero out the readings, ensuring you start from a perfectly horizontal or vertical point. Audible Indicator: Activate the sound function to receive an audio cue when your surface is perfectly horizontal or vertical. Accuracy has never sounded so good! Why Choose our app? User-friendly interface Highly accurate measurements Versatile features for a wide range of applications Handy add-ons like angle locking and calibration Bubble Level app is free. You can use it forever, at no cost. However, Bubble Level does offer premium features for its subscribers. If you decide to purchase an upgrade, you will unlock additional features. ADDITIONAL FEATURES FOR SUBSCRIBED USERS • No Ads • Access the "lock" feature • Access the vertical level, horizontal level, and mix mode. Terms of Use: https://kociapp.github.io/Bubble-Level/term-of-use Privacy Policy: https://kociapp.github.io/Bubble-Level/privacy-policy

About

PDFs

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
Read full description

Effortlessly Edit, Protect & Organise PDFs Take full control of your PDF documents with PDFs: Merge & Split – your all-in-one PDF editor for combining, splitting, securing, and customising your files. Whether you're handling work reports, study materials, or legal documents, this app makes PDF editing simple, fast, and offline-friendly. Key Features: - Merge PDFs: Combine multiple PDF files into a single document. - Split PDFs: Extract specific pages or split large files into smaller ones. - Lock & Unlock PDFs: Protect PDFs with a password or remove existing security. - Add Watermark: Insert custom watermarks (text or image) to protect your content. - Add Page Numbers: Number your PDF pages for better readability and organisation. - Organise Pages: Reorder, rotate, delete, or duplicate pages with ease. - Rotate PDFs: Rotate individual pages or the entire document. - Secure Your Files: Add encryption for extra privacy. - Convert & Export: Save your PDFs in various formats for seamless sharing. - Offline Support: Process all files locally on your device, no internet needed. Subscription & Pricing Options: Unlock all premium tools with flexible pricing: Weekly Plan – Perfect for temporary tasks Monthly Plan – Ideal for students and professionals Yearly Plan – Best value for long-term users Lifetime Access – One-time payment for unlimited use Why Choose PDFs: Merge & Split? All-in-One PDF Toolkit – Every essential feature in one app Fast & Reliable – Process documents in seconds Secure & Private – 100% offline, no cloud storage or tracking Intuitive UI – Designed for productivity and ease of use Privacy Policy: https://www.freeprivacypolicy.com/live/de501fa3-782a-48dd-b33f-83d8bc220c5c Terms of use: https://www.privacypolicies.com/live/ec0062f6-bde6-4a8d-b665-9df7cf6f5d6e Need help? Contact us at: help.app007@gmail.com Download PDFs: Merge, Split & Lock today and experience the easiest way to manage your documents on the go.

Screenshots

Bubble Level3 screens
PDFs4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
Bubble Level versus PDFs: the parameters behind the verdict, then further details
ParameterBubble LevelPDFs
PriceFreeFree
Rating4.8 (60 ratings) — better4.8 (75 ratings)
Positive reviews75.0% of reviews — better50.0% of reviews
Number of ratings6075 — better
Update frequencyEvery 2 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better16.0
Further details — not scored
Size16 MB36 MB
Age rating4+4+
DeveloperAndy SutantoHANSIFY TECHNOLOGIES

Customer experience

Bubble Level

All ratings60 ratings
Positive93.3%
Neutral6.7%
Negative0.0%
Written reviews8 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

PDFs

All ratings76 ratings
Positive97.4%
Neutral0.0%
Negative2.6%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

3 purchases

Bubble Level

Subscriptions2
  • Bubble Level Pro$1.997 Days
  • Spirit Level Pro$19.991 Year
One-time1
  • Waterpas Pro - Waterpass$39.99
3 purchases

PDFs

Subscriptions2
  • Monthly Plan$4.991 Month
  • Yearly Plan$9.991 Year
One-time1
  • Lifetime$9.99

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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