Comparison

Proportional Scale vs EMB 145 Training Guide PRO

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

Head to head
About

Proportional Scale

Easily calculate new image dimensions while preserving aspect ratio to avoid distortion. This tool helps graphic designers, photographers, and professionals accurately resize images for various needs, including blueprinting and sign making.

Highlights
  • Scale image dimensions
  • Maintain image proportions
  • Fraction modes
  • Percent mode
  • Image scale tool
  • Image preview
Features
Read full description

Have you ever resized an image that resulted in image stretching or unwanted distortion. Proportional Scale App makes it easy to calculate new image dimensions and maintain the aspect ratio; leaving no distortion or stretching. How To Use: * Enter the dimensions of the image to be scaled. * Change the scale ratio with slider or text entry. * Use the scaled image to resize the image. “As a graphic designer I have the need to scale images all the time. This works great and is easy to use.” - SadieGirl22 “I scale photos all the time and usually have to calculate both dimensions. With this app I can find both dimensions quicker. It saves me time and it looks great.” - Bowz Features: * Scale image dimensions * Maintain image proportions * Fraction Modes * Percent Mode * Image scale tool Image Scale Tool: This tool lets the user select an image and scale it to an exact pixel size. The tool will show an image preview to help the user know how big the new size actually is. "I work for a blueprint company and sign shop. We are always looking at size limitations imposed by the customers. This is the best answer to all the "what if it was" questions. Also the customer and I can see quickly how pixilated an image would become if it gets blown up too big without expensive graphic software. Some software developers go above and beyond, thank you for adding this great feature to an already amazing app." - DarVader55 Get Proportional Scale Today!

About

EMB 145 Training Guide PRO

This comprehensive guide offers thousands of questions, detailed explanations, and high-definition images covering all systems of the EMB-145 airplane. It includes fast search tools for abbreviations, EICAS messages, and limitations, along with an interactive virtual panel and a unit converter.

Highlights
  • Extensive Q&A on EMB-145 systems
  • Detailed answer explanations
  • High-definition images and interactive panel
  • Fast search for abbreviations and limitations
  • Unit conversion tools
  • Dark mode support
Features
Read full description

EMB-145 Training Guide PRO is a complete pilot training database designed to help pilots master the EMB-145 aircraft systems through an efficient question, answer, and explanation format. Whether you are preparing for EMB-145 certification training, recurrent training, simulator sessions, or simply want to stay current, this app provides one of the most comprehensive EMB-145 study resources available. After completing this guide, you will clearly identify what you already know and what areas require additional study, allowing you to improve your overall systems knowledge and test performance. FEATURES INCLUDED * 1,590+ Questions with detailed explanations and references * 525 High-Quality Images * 1,320 References and System Explanations * 400 EMB-145 Abbreviations with Fast Search Engine * 210 EICAS Messages with Fast Search Engine * EMB-145 FAA/JAA Limitations with Fast Search Engine * 1,837 FAA Abbreviations with Fast Search Engine * Aviation Glossary Included * High-Definition Images (Panels, Buttons, Components) * Full Interactive EMB-145 Virtual Panel with Explanations * More than 900 Interactive Components * Dark Mode Enabled TOPICS INCLUDED * FULL TEST – 1,590+ Questions * General – 47 Questions * Crew Awareness – 241 Questions * Lighting – 34 Questions * Pressurization – 105 Questions * Fire Protection – 51 Questions * Fuel – 42 Questions * Hydraulic – 37 Questions * Ice Protection – 44 Questions * Gear and Brakes – 103 Questions * Oxygen – 48 Questions * Flight Controls – 110 Questions * Electrical – 100 Questions * Autopilot / Auto-Flight – 116 Questions * Engine – 186 Questions * Instruments – 68 Questions * Radar – 38 Questions * Navigation and Communication – 106 Questions * APU – 38 Questions The information included in this app is based on the EMB-145 Airplane Operations Manual, providing accurate and operationally relevant study material for professional pilots. The integrated Fast Search Tool allows instant searching through more than 3,000 aviation definitions, limitations, abbreviations, and operational references. During study sessions or practice tests, you can quickly locate information and immediately return to your training, greatly improving the learning and test-taking experience. EMB-145 Training Guide PRO combines thousands of questions, explanations, references, images, search tools, and interactive training resources into a single professional aviation study platform. If you want to become a better and more knowledgeable EMB-145 pilot, this is the training guide for you.

Screenshots

Proportional Scale2 screens
EMB 145 Training Guide PRO4 screens

Verdict

The call

The clearest difference is price: Proportional Scale at $1.99 against EMB 145 Training Guide PRO's $19.99. Proportional Scale also leads on rating (4.5 vs 3.8) and update cadence (every 5 months vs every 17 months). EMB 145 Training Guide PRO's advantage is review sentiment (100% vs 75%). 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

CostPrice · In-app purchases · Ads · Monetization

Proportional Scale costs $1.99 and EMB 145 Training Guide PRO $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Proportional Scale holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews complicate that: 75% of Proportional Scale's written reviews are positive against 100% of EMB 145 Training Guide PRO's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Proportional Scale ships an update every 5 months, EMB 145 Training Guide PRO every 17 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Proportional Scale versus EMB 145 Training Guide PRO: the parameters behind the verdict, then further details
ParameterProportional ScaleEMB 145 Training Guide PRO
Price$1.99 — better$19.99
Rating4.5 (14 ratings) — better3.8 (4 ratings)
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings14 — better4
Update frequencyEvery 5 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size5 MB171 MB
Age rating4+4+
DeveloperCourtney & CompanyJorge Gonzalez Galvan

Customer experience

Proportional Scale

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews36 reviews
Positive75.0%
Neutral2.8%
Negative22.2%

EMB 145 Training Guide PRO

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Proportional Scale

No in-app purchases

None

EMB 145 Training Guide PRO

No in-app purchases

Questions

Is Proportional Scale free?
Proportional Scale costs $1.99, with no in-app purchases.
Is EMB 145 Training Guide PRO free?
EMB 145 Training Guide PRO costs $19.99, with no in-app purchases.
Which has better reviews, Proportional Scale or EMB 145 Training Guide PRO?
Proportional Scale is rated higher. Proportional Scale averages 4.5 out of 5 from 14 ratings, while EMB 145 Training Guide PRO averages 3.8 from 4 ratings.
Do Proportional Scale or EMB 145 Training Guide PRO have ads?
Neither Proportional Scale nor EMB 145 Training Guide PRO shows ads.
Which is updated more often, Proportional Scale or EMB 145 Training Guide PRO?
Proportional Scale ships an update every 5 months, and EMB 145 Training Guide PRO every 17 months. Most recently, Proportional Scale was updated on October 26, 2026 and EMB 145 Training Guide PRO on October 24, 2026.

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