LED Ohm Calc vs PDF Studio(Pro)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LED Ohm Calc
This utility simplifies calculating LED resistors by handling various voltages, decimal values, and multiple LEDs. It offers intuitive input methods for power supply and LED ratings, making complex calculations straightforward.
- Calculate LED resistors
- Handle various power supply voltages
- Input decimal LED voltage ratings
- Calculate current and wattage
- Support for multiple LEDs
- Intuitive slide bar and text input
Read full descriptionHide full description
Isn't LED resistor calculation troublesome? When calculating LED resistors, you may find it challenging due to the following: 1.The variety of power supply voltages and microcontroller output voltages 2.Voltage values with decimals (e.g., 3.5–3.7V for blue and white LEDs) 3.Current value calculations 4.Calculations involving multiple LEDs 5.Power consumption (wattage) calculations Features of this App This app simplifies complex calculations using an intuitive slide bar and a text field for manual input. Specifications 1.Power Supply Voltage The slide bar allows settings up to 12V, but you can input higher values using the text field. 2.LED Ratings The slide bar has limits of 4.0V and 50mA, but the text field allows you to input values without restrictions. 3.Closing the Numeric Keypad To close the keypad, press the [Done] button. Share Your Feedback While we may not be able to address every request, we welcome your suggestions and feedback. If you enjoy the app, please consider leaving a review!
PDF Studio(Pro)
Read full descriptionHide full description
Welcome to PDF Studio, the ultimate PDF management app designed to provide a comprehensive and powerful document editing experience. The app is equipped with features that cater to both casual users and professionals, ensuring seamless PDF handling for all your needs. Key Features: Scan: Create PDF documents directly from your device camera by scanning physical documents. Images to PDF: Convert multiple images into a single PDF document with ease. Merge: Combine multiple PDF files into one unified document. Split: Divide a single PDF file into separate documents as needed. Watermark: Add custom watermarks to protect and brand your PDF documents. Annotate: Add notes, comments, and annotations to your PDF files. Create: Build new PDF documents from scratch with full customization options. Edit: Add text and images to existing PDF documents. Sign: Add digital signatures to PDF files for authentication and approval. Page Numbers: Insert page numbers throughout your PDF documents. Lock: Secure your PDF files with password protection. Unlock: Remove password protection from locked PDF files. Page Size: Change the page size of your PDF documents to standard formats. Crop: Crop PDF pages to remove unwanted margins or focus on specific content. Compress: Reduce PDF file size without significant quality loss. Rotate Pages: Rotate PDF pages to correct orientation. Extract Pages: Extract specific pages from PDF documents. Duplicate Pages: Create copies of pages within your PDF. Remove Pages: Delete unwanted pages from PDF documents. Rearrange Pages: Reorder pages in your PDF files. Blank Pages: Insert blank pages into your PDF documents. Flip Pages: Flip PDF pages horizontally or vertically. Page Filter: Apply filters like black and white or grayscale to PDF pages. PDF to MP3: Convert PDF text content to audio files. PDF to Images: Convert PDF pages to image files. PDF to TXT: Extract text content from PDF files. Elevate your PDF management experience with PDF Studio, where every feature is crafted to support your document needs. Whether you're merging reports, signing contracts, or organizing documents, the app is your perfect PDF companion. Developed by Anvaysoft Programmer - Hrishi Suthar Made with love in India
Screenshots
Verdict
The clearest difference is update cadence: PDF Studio(Pro) at every 2 days against LED Ohm Calc's every 10 days. PDF Studio(Pro) also leads on iOS requirement (13.0 vs 15.6). LED Ohm Calc's advantage is price ($0.99 vs $2.99). On ads, in-app purchases and device support 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
LED Ohm Calc costs $0.99 and PDF Studio(Pro) $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LED Ohm Calc ships an update every 10 days, PDF Studio(Pro) every 2 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.
| Parameter | LED Ohm Calc | PDF Studio(Pro) |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.3 (6 ratings) — better | — |
| Positive reviews | 64.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 10 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Mimi Apps&technologies | Hrishi Suthar |
In-app purchases
LED Ohm Calc
No in-app purchases
PDF Studio(Pro)
No in-app purchases
Questions
Is LED Ohm Calc free?
Is PDF Studio(Pro) free?
Do LED Ohm Calc or PDF Studio(Pro) have ads?
Which is updated more often, LED Ohm Calc or PDF Studio(Pro)?
Other comparisons
