Comparison

Trigonometric Calculation vs CAD FastView

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

Head to head
About

Trigonometric Calculation

Features
Read full description

This is a calculation application for finding angles and side lengths of triangles. 1 We would appreciate a review if there are any problems such as calculation glitches. 2 I hope you will use this application for simple calculations. Please understand that we cannot be held responsible for any impact or disadvantage related to the quality of production activities caused by the calculations in this application.

About

CAD FastView

View, convert, and print CAD drawings on your mobile device. Supports DWG, DXF, and PDF formats with iCloud sync and Wi-Fi printing. Ideal for architects, engineers, and construction professionals.

Highlights
  • Fast DWG/DXF viewing
  • Convert drawings to PDF
  • Wi-Fi printing
  • iCloud synchronization
  • Layer layout management
  • Multiple viewing options
Features
Read full description

CAD FastView is a multifunctional CAD drawing viewer and sharing app that supports a wide range of CAD formats. It lets you quickly open and view CAD drawings in formats such as DWG, DXF, DWT, DWS, DWF, STEP, STL, IFC, IGES, BREP, FCStd and more. It also supports opening 3D file formats including OBJ, FBX, GLTF, GLB, 3DS and DAE with 2D projection viewing. You can also convert CAD drawings to PDF, print drawings, sync files with iCloud, and manage your drawings with ease. Used by millions of professionals worldwide, including architects, engineers, construction specialists, field technicians, and contractors from various industries. Whether it's mechanical drafting, electrical design, civil engineering, or interior decoration, CAD FastView can handle it all effortlessly! Committed to creating a mobile product that satisfies CAD users globally, CAD FastView provides users with high-quality products and services and continually improves product quality while developing more practical features. ---------------------------------- [Core Features] 1. Wide CAD Format Support: - CAD Formats: Supports DWG, DXF, DWT, DWS, DWF, STEP, STL, IFC, IGES, BREP, FCStd & more. - 3D Formats: Open OBJ, FBX, GLTF, GLB, 3DS, DAE & more with 2D projection viewing. Easily import and open CAD files from Files, other apps, or transfer them via Wi-Fi. 2. Perfect High-Definition Display: Enjoy lossless zoom capabilities to view fine details. It automatically matches thousands of fonts to eliminate missing character or text encoding issues. Provides layer layout management and multiple viewing background modes. 3. One-Click iCloud Sync: Seamlessly sync your drawings to iCloud and access them across your iPhone, iPad, and Mac computers. Check the latest blueprints on your mobile device directly at the construction site. 4. CAD to PDF Conversion: Convert CAD drawings to high-definition PDF files with just one click. Easily share via social media or email, making team communication barrier-free. ---------------------------------- [Premium Member Benefits] - Import drawings unlimited times; - Unlimited high-definition viewing; - Unlimited CAD to PDF conversion; - Enjoy permanent pop-up ads; - Access to all premium features. Subscription Details: Subscription periods: One week, One month, One year. Payment: Payment will be charged directly to your iTunes account upon confirmation of purchase. Cancel renewal: To cancel the renewal, please manually turn off the auto-renewal feature in your iTunes/Apple ID settings at least 24 hours before the current subscription period expires. Renewal: Your Apple iTunes account will be charged within 24 hours prior to expiration. Upon successful payment, the subscription will be extended by one period. Free Trial: Any unused portion of a free trial period will be forfeited when the user purchases a subscription. Privacy Policy: https://www.cadview.cn/privacy_policy.html User Agreement: https://www.cadview.cn/user_agreement.html Subscription Terms: https://www.cadview.cn/SubscriptionTerms.html

Screenshots

Trigonometric Calculation4 screens
CAD FastView4 screens

Verdict

The call

The clearest difference is in-app purchases: Trigonometric Calculation at none against CAD FastView's 3. CAD FastView's advantage is ads (none vs shown) and update cadence (fortnightly vs every 6 weeks). On price, 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

Both are free to download. CAD FastView sells 3 in-app purchases, starting at $6.99 per 7 days. Trigonometric Calculation asks for nothing beyond the download.

UpkeepUpdate frequency

Trigonometric Calculation ships an update every 6 weeks, CAD FastView fortnightly. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
Trigonometric Calculation versus CAD FastView: the parameters behind the verdict, then further details
ParameterTrigonometric CalculationCAD FastView
PriceFreeFree
Rating—4.0 (50 ratings) — better
Positive reviews—33.3% of reviews
Number of ratings—50 — better
Update frequencyEvery 6 weeksFortnightly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.5 — better15.6
Further details — not scored
Size5 MB33 MB
Age rating4+4+
DeveloperRisako Asai镇源 余

In-app purchases

None

Trigonometric Calculation

No in-app purchases

3 purchases

CAD FastView

Subscriptions3
  • Weekly3 Days trial$6.997 Days
  • Monthly3 Days trial$12.991 Month
  • Yearly3 Days trial$29.991 Year

Questions

Is Trigonometric Calculation free?
Trigonometric Calculation is free to download, with no in-app purchases.
Is CAD FastView free?
CAD FastView is free to download, with in-app purchases available.
Do Trigonometric Calculation or CAD FastView have ads?
Trigonometric Calculation shows ads; CAD FastView does not.
Which is updated more often, Trigonometric Calculation or CAD FastView?
Trigonometric Calculation ships an update every 6 weeks, and CAD FastView fortnightly. Most recently, Trigonometric Calculation was updated on October 13, 2026 and CAD FastView on October 9, 2026.

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