Comparison

WoodMasterHD vs SpinopelvicMobilityApp

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

Head to head
About

WoodMasterHD

This app is a comprehensive toolkit for woodworkers, offering a variety of calculators for projects, shelving, and decking. It also includes conversion tools, reference charts for fasteners and joints, and aids for proportional design.

Highlights
  • Board Foot Calculator with Tally
  • Shelf and Decking Calculators
  • Wall Panels/Sheets Calculator
  • Fraction and Length Converters
  • Proportional and Golden Ratio Tools
  • Woodworking Joint and Wood Type References
  • Fastener Size Charts
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WoodWorkers Guild of America Rated WoodMaster as one of the Top 3 MUST-HAVE Woodworking Apps for your Phone! WoodMasterHD is an extremely handy tool for Woodworkers. Finally a LOADED Woodworking app for Woodworkers! Woodworking apps are few and far between and there are couple of good ones but very limited. Being Woodworkers ourselves, we wanted something for Woodworkers that was more than just a simple board ft. calculator… Welcome to WoodMasterHD! WoodMasterHD is packed with many time-saving features! Check the features list below for a long list of useful tools that only WoodMasterHD includes in a singe app! WoodMasterHD will continue to grow with more tools being added to each new version release. FEATURES LIST (Details on Website): Board Foot Calculator: A board foot calculator that includes a Tally count and Tally cost. Using the Tally feature, you could enter varying sizes of wood stock in groups. For example, enter all 2x4's, add it to the Tally, then 2x6's, add it to the Tally, etc. You can basically use the Tally feature to estimate the cost of an entire woodworking project. Shelf Calculator: Installing shelves for a cabinet, bookcase shelves, etc.? This will calculate spacing between the shelves evenly. Supports inches or millimeters and gives you the exact position of every shelf. Decking Calculator Calculator the number of decking boards needed for a given deck size. Calculate up to 3 deck sections, each with a different length of deck boards (8ft, 10ft, 12ft and 16ft). (Calculations are based on standard 5.5" wide decking boards.) Wall Panels Calculator (NEW) Added New Wall Panels/Sheets Calculator. Can be used to estimate plywood or paneling sheets needed to cover walls. Could be used for drywall sheet estimates but not specifically designed for it. Assumes standard 4ft x 8ft sheet sizes. Fraction Calculator (Sliderule version): Very cool method of adding and subtracting fractions without entering any numbers. Fraction Calculator (Numeric): Add fractions including whole numbers. Fraction to Decimal & Millimeter Converter Length Conversions: Most common conversions for Woodworking Proportional Calculator: Turn big woodworking projects into little woodworking projects or little woodworking projects into big woodworking projects while maintaining exact proportions. Very handy for enlarging or reducing woodworking dimensions proportionally. Golden Ratio: Calculates the Golden Ratio for any given size to find the most pleasing proportion for your Woodworking projects! Nominal to Actual Size: Shows the exact measurements of wood based on it's nominal size. Also includes millimeter size. Screw Size Chart: Handy reference chart that includes Gauge, Head-Bore, Shank and Pilot hole sizes for hardwood and software. Nail Size Chart Handy reference chart for typical nail sizes. Joint Types: Very handy visual reference for the most common types of joints used in woodworking. Wood Types: Very hand visual reference for different types of wood. If you have a sample, send it to us and we'll add it to the list. Knockdown Workbench: Our plans for building a quick knock-down Workbench from a single 4x8 sheet of plywood. Very simple and the first thing my grandfather taught me to build when I was 14 years old! You can have WoodMasterHD send these plans to your Email address in PDF format. Woodworking Project Planner PDF file: A very handy blank Woodworking Project Planner Form. WoodMaster can Email you a Project Planner form that you can print out and use for your next project. It has the most typical information for a woodworking project. You can have the WoodMaster app send this Project Planner to your Email address in PDF format. (Please note that this is not an interactive form (like a database) but a simple form that you can print out and fill in for your projects. We do plan to build an interactive Project Planner that you can fill out right in the app and then send it to your Email address.

About

SpinopelvicMobilityApp

Features
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Evaluation of lateral radiographs in sitting and standing positions is of importance, especially in patient before total hip replacement surgery.The importance of understanding the hip spine relationship and the spinopelvic mobility has become increasingly recognised in recent years as a cause of hip instability with no previous known aetiology. Spinopelvic motion is a coordinated biomechanical relationship among acetabular anteversion, pelvic tilt, and lumbar lordosis. Hip instability due to spinopelvic mobility, specifically the move from standing to sitting, and the subsequent changes in pelvic orientation is associated with late dislocations in hip replacement surgery and revision. Awareness of this phenomenon by hip and spine surgeons and pre and post operative evaluation of the hips help guide the surgeon to the ideal location for cup implantation or to address the spine or hip pathology accordingly. Radiographic measurement in lateral radiographs in sitting and standing positions of Pelvic incidence (PI), Sacral Tilt (ST), Ante-Inclination (AI), Sacro-acetabular angle (SAA) , Pelvic femoral Angle Angle (PFA) and Combined Sagittal Index (CSI) are of paramount importance. These data measured in standing and in sitting X-rays and compared both with normal reference data may help to evaluate and plan treatment strategies. In clinical settings measuring all these angles is cumbersome and App comes to help the surgeon to do the job without loosing time. The Spinopelvic Mobility App is medical software aimed for orthopaedic surgeons, providing tools that allow doctors to: -Securely import medical images directly from the camera or stored photos. -By marking few points at the image of X-ray, the App calculates and offers a very convenient way to determine the most possibly accurate way at once, Combined Sagittal Index (CSI) ,Pelvic incidence (PI), Sacral Tilt (ST), Ante-Inclination (AI), Sacro-acetabular angle (SAA) , Pelvic femoral Angle Angle (PFA). According to measured parameters in standing and sitting lateral x- rays the app helps to identify patterns of spinopelvic mobility namely normal, hypermobile or three patterns of spinal imbalance: hips maintained in anterior tilt (stuck standing), hips held in posterior tilt (stuck sitting), or stiff hips or kyphotic sacrum and predict by CSI the possible direction of THA dislocation. -Save the planned images, for later review or consultation.The measured values are compared by normal reference databases and also data are exported as txt file, ready to print or to input as cells to excel for research. -The app allows choosing points in an in independent manner from order and thus it is easy to be learned and in case of wrong selection powerful undo feature is present. All information received from the software output must be clinically reviewed regarding its plausibility before patient treatment! Spinopelvic Mobility App indicated for assisting healthcare professionals. Clinical judgment and experience are required to properly use the software.The software is not for primary image interpretation. The build in feature of the app, allows results to be categorized may help decide what could be considered normal or pathologic. This App is particular useful in clinical settings where you need a quick results without loosing time. Please see tutorial videos at the developer’s web site www.orthopractis.com Reference 1.Lum ZC ,et al The Current Knowledge on Spinopelvic Mobility.J Arthroplasty. 2018 Jan;33(1):291-296. 2.Stefl M et all Spinopelvic mobility and acetabular component position for total hip arthroplasty. Bone Joint J. 2017 Jan;99-B(1 Supple A):37-45. 3.Tezuka T et al . Functional safe zone is superior to the Lewinnek safe zone for total hip arthroplasty: why the Lewinnek safe zone is not always predictive of stability. J Arthroplasty. 2019;34:3–8. 4. Heckmann N et al JBJS. 2018;100:1845–53.

Screenshots

SpinopelvicMobilityApp4 screens

Verdict

The call

The clearest difference is update cadence: WoodMasterHD at every 4 months against SpinopelvicMobilityApp's every 10 months. WoodMasterHD also leads on price ($7.99 vs $9.99) and iOS requirement (13.0 vs 15.6). SpinopelvicMobilityApp's advantage is device support (4 vs 1). On ads 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

WoodMasterHD costs $7.99 and SpinopelvicMobilityApp $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WoodMasterHD ships an update every 4 months, SpinopelvicMobilityApp every 10 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 4 level
WoodMasterHD versus SpinopelvicMobilityApp: the parameters behind the verdict, then further details
ParameterWoodMasterHDSpinopelvicMobilityApp
Price$7.99 — better$9.99
Positive reviews50.0% of reviews—
Update frequencyEvery 4 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.6
Further details — not scored
Size5 MB1 MB
Age rating4+17+
DeveloperJohn LullieORTHOPRACTIS.COM SINGLE MEMBER P.C.

In-app purchases

None

WoodMasterHD

No in-app purchases

None

SpinopelvicMobilityApp

No in-app purchases

Questions

Is WoodMasterHD free?
WoodMasterHD costs $7.99, with no in-app purchases.
Is SpinopelvicMobilityApp free?
SpinopelvicMobilityApp costs $9.99, with no in-app purchases.
Do WoodMasterHD or SpinopelvicMobilityApp have ads?
Neither WoodMasterHD nor SpinopelvicMobilityApp shows ads.
Which is updated more often, WoodMasterHD or SpinopelvicMobilityApp?
WoodMasterHD ships an update every 4 months, and SpinopelvicMobilityApp every 10 months. Most recently, WoodMasterHD was updated on October 11, 2026 and SpinopelvicMobilityApp on October 7, 2026.

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