Comparison

Mechanical Engineer vs NotePrints

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

Head to head
About

Mechanical Engineer

This app provides over 300 essential mechanical engineering formulas across various domains. It allows users to calculate, save, compare, and share results, aiding in project optimization and decision-making. Users can access a limited number of calculations for free, with a subscription unlocking full functionality.

Highlights
  • Over 300 mechanical engineering formulas
  • Covers diverse engineering domains
  • Save and compare formula results
  • Share calculation outcomes
  • Intuitive and practical interface
  • Regular updates based on user input
Features
Read full description

MECHANICAL ENGINEER FORMULATOR – Elevate Your Engineering with Precision For the dynamic Mechanical Engineer and the proactive engineering student, MECHANICAL ENGINEER FORMULATOR stands as the definitive tool that merges practicality with ease of use. Navigate through your engineering challenges confidently with an app crafted for direct, intuitive interaction. Boasting a comprehensive collection of over 300 essential mechanical engineering formulas, MECHANICAL ENGINEER FORMULATOR actively supports a wide array of mechanical engineering domains: • Actuators & Bearings: Execute precision movements and manage loads with authority. • Belts & Boilers: Transmit power efficiently and generate steam reliably. • Brakes & Clutches: Apply stopping power decisively and control torque with finesse. • Elevators & Gears: Operate smoothly and transfer motions effectively. • Fluid Power & Heat Transfer: Control fluids masterfully and manage thermal dynamics skillfully. • Internal Combustion & Kinetic Energy: Generate power robustly and analyze motion with precision. • Metalworking & Plates: Shape materials skillfully and ensure structural integrity. • Plumbs & Power Plants: Direct fluid systems confidently and produce energy proficiently. • Refrigeration & Shafts: Cool systems effectively and rotate components seamlessly. • Springs & Vehicle Drive: Store energy reliably and propel vehicles powerfully. MECHANICAL ENGINEER FORMULATOR empowers you to save and compare formula results, enhancing decision-making for project optimization. Share your formula outcomes effortlessly, enabling seamless collaboration. Given the ever-advancing nature of engineering, we pledge to move forward together with you. If you are looking for a formula not yet featured, or desire an enhancement, just email us. We are committed to listening and incorporating your input into our forthcoming updates. MECHANICAL ENGINEER FORMULATOR is not just an app; it's an essential resource to achieve engineering excellence. MECHANICAL ENGINEER FORMULATOR places the full potential of precision engineering at your fingertips. MECHANICAL ENGINEER FORMULATOR is FREE to DOWNLOAD and view all of the formulas. Users are able to calculate five formulas for FREE. Purchase a subscription to calculate additional formulas. All subscriptions come with a 1-WEEK FREE TRIAL and SUPPORT Family Sharing.

About

NotePrints

This app allows you to view, annotate, and create PDF documents with powerful markup tools. It handles large files and offers extensive zoom capabilities, along with drawing and text editing features. You can also manage files, extract pages, and share your work across devices.

Highlights
  • View and markup PDF files
  • Support for large format and multi-page PDFs
  • 300x zoom capability
  • Vector graphics drawing engine
  • Create new PDFs from camera or photos
  • Add shapes, rich text, and hand drawings
  • Cut, copy, and paste between documents
  • File management and page manipulation
Features
Read full description

Welcome NotePrints - Virtual paper done right! Leave your NotePrints all over your documents including large CAD drawings NotePrints can do: + View and add markups to PDF files NotePrints is naturally one of the fastest PDF viewers One touch activates powerful markup features + Work with large files and large format sheets NotePrints was built from the ground up for large format PDF files (36” x 48” and larger page sizes) and files with 1000's of pages + 300x Zoom Zoom way in to create and view small details Deepest zoom in the industry + Vector graphics drawing engine Graphics are always crisp retina quality at all zoom levels + Create PDFs Create new PDFs from camera or Photos or by choosing from blank or patterned virtual paper + Add shapes, photos and rich text Add straight lines, rectangles, ellipses and perfect squares and circles Add photos from camera or Photos Create rich text with many fonts, colors and formatting options + Draw by Hand Basic efficient vector drawing engine with many colors, line widths and line types to choose from + Cut, Copy, Paste Cut, Copy and Paste between pages and documents + Open locked PDFs View password protected PDF files + Desktop file management Create, move, copy, delete and rename files, folders and sub-folders + Add, Delete, Extract pages Add pages at any point in PDF Delete any pages from PDF Extract any pages to new PDF file + Transfer files Use iTunes sharing or DropBox to copy files to/from NotePrints Share and open PDF files with other apps with "Open in ..." support Open PDF email attachments directly into NotePrints Email files directly from NotePrints + Package Package all your edits and original PDF file into a proprietary NotePrints .npd file and transfer to your computer for backup or to another iPad or iPhone to continue editing

Screenshots

Mechanical Engineer4 screens
NotePrints4 screens

Verdict

The call

The clearest difference is price: Mechanical Engineer at Free against NotePrints's $0.99. Mechanical Engineer also leads on ratings volume (8 vs 1). NotePrints's advantage is rating (5.0 vs 4.4) and in-app purchases (none vs 3). On ads, device support and iOS requirement 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

Mechanical Engineer is free to download; NotePrints costs $0.99 up front. Mechanical Engineer sells 3 in-app purchases, starting at $0.99 per month. NotePrints asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NotePrints holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Mechanical Engineer has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 30% of Mechanical Engineer's written reviews are positive against 50% of NotePrints's.

UpkeepUpdate frequency

Mechanical Engineer ships an update every 2 months, NotePrints every 9 days. The most recent releases landed on October 6, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
Mechanical Engineer versus NotePrints: the parameters behind the verdict, then further details
ParameterMechanical EngineerNotePrints
PriceFree — better$0.99
Rating4.4 (8 ratings)5.0 (1 ratings) — better
Positive reviews29.6% of reviews50.0% of reviews — better
Number of ratings8 — better1
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.0 — better
Further details — not scored
Size5 MB32 MB
Age rating4+4+
DeveloperHistorycentral.comScott Saia

Customer experience

Mechanical Engineer

All ratings8 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews27 reviews
Positive29.6%
Neutral18.5%
Negative51.9%

NotePrints

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

3 purchases

Mechanical Engineer

Subscriptions3
  • Monthly Subscription7 Days trial$0.991 Month
  • Pro Quarterly$0.993 Months
  • Pro Yearly7 Days trial$2.991 Year
None

NotePrints

No in-app purchases

Questions

Is Mechanical Engineer free?
Mechanical Engineer is free to download, with in-app purchases available.
Is NotePrints free?
NotePrints costs $0.99, with no in-app purchases.
Which has better reviews, Mechanical Engineer or NotePrints?
NotePrints is rated higher. Mechanical Engineer averages 4.4 out of 5 from 8 ratings, while NotePrints averages 5.0 from 1 ratings.
Do Mechanical Engineer or NotePrints have ads?
Neither Mechanical Engineer nor NotePrints shows ads.
Which is updated more often, Mechanical Engineer or NotePrints?
Mechanical Engineer ships an update every 2 months, and NotePrints every 9 days. Most recently, Mechanical Engineer was updated on October 6, 2026 and NotePrints on September 24, 2026.

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