Comparison

Roof Truss Calculator vs StudPlan

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

Head to head
About

Roof Truss Calculator

Instantly calculate the number of roof trusses needed for your project. Input roof length and spacing in various units to get a quick count. Streamline your construction planning with this efficient tool.

Highlights
  • Instant truss count calculation
  • Supports roof length and spacing input
  • Multiple unit support (meters, cm, inches, feet)
  • Fast and efficient for construction planning
  • User-friendly interface
Features
Read full description

Roof Truss Calculator is the fastest calculator a Roof Truss. Just provide a Roof length and a On Center Spacing and you’ll get an Truss Count, instantaneously. Roof Truss Calculator can also quickly determine Truss Count based on Roof length and On Center Spacing expressed in: 1. Meters 2. Centimeters 3. Inches 4. Feet Calculate Roof Truss quickly and as you want. --- The Terms of Use https://feelmanapp.com/terms-conditions-for-roof-truss-calculator/

About

StudPlan

Features
Read full description

Plan wall framing in seconds — wood or steel, straight or rake/gable — with full material takeoffs, client quotes, and cut lists ready for the job site. Built for iOS 17. No accounts. No analytics. No advertising. No tracking SDKs. 100% offline — every calculation runs on your phone, so it works in a basement or anywhere else with no signal. WHAT YOU CAN DO • FRAME A SINGLE WALL Enter length, height, and on-center spacing (12", 16", 19.2", or 24"). Choose 2x4 or 2x6 lumber. Get instant stud counts, plate lengths, board feet, wood volume, and wall area, with a live layout and your choice of end-stud configuration. Tap any field to type over it instantly. • STEEL FRAMING Cold-formed steel studs for non-load-bearing partitions — track and stud linear-foot takeoffs, gauge selection, and self-drilling screw counts. • RAKE, GABLE & ASYMMETRIC GABLE WALLS Enter a pitch (3:12 to 12:12, or custom) or low/high heights. Gable walls support a center or off-centre ridge with independent left/right slopes. Every stud comes out with its exact length and bevel angle, ready to cut. • DOORS, WINDOWS & CORNERS Drop in any opening with its rough opening size, and position it from the left edge, right edge, or center — one tap. King studs, jack studs, cripples, sills, and headers are calculated for you, including built-up trimmer posts for wide openings per IRC R602.7.5. • CUT LIST & MATERIAL TAKEOFF A full board-by-board takeoff — studs, plates, headers, blocking — per wall and across the project. Sheathing and drywall sheet counts, insulation coverage, and fastener estimates included. A buy list shows how many sticks of each market length to order, exportable as CSV. • 4×8 SHEET LAYOUT See exactly where OSB or plywood panels land on your wall. Edges on a stud are green; unsupported joins are flagged red before you start nailing. • FIXTURE BACKING Point-placed blocking for grab bars, TV mounts, and cabinets, each with its own board footage and diagram placement. • PRESETS One tap loads standard pre-cut heights (92-5/8", 104-5/8", 116-5/8"). Or save your own wall configuration once and reuse or update it on any wall. • MARK-OUT GUIDE A copy-ready list of measured positions along the plate — for marking studs on-site without re-counting. • MULTI-WALL PROJECTS Save framing jobs across multiple walls with intersection tracking (shared studs auto-deducted at T-junctions). Duplicate a wall or start the next one pre-filled with the last. Undo an accidental delete. Track totals: studs, plates, board feet, wood volume, wall area, and cost. • CLIENT QUOTE PDF & EXPORT A client-ready estimate with labor hours, material subtotal, markup, and tax — without exposing your cut list. Or export a full PDF with diagrams, cut lists, mark-out positions, and material summary. • IMPERIAL AND METRIC Feet-inches-fractions down to 1/8", or millimeters. Switch anytime without losing your project. • YOUR OWN iCLOUD SYNC Projects sync across your iPhone and iPad through your own iCloud account — optional, can be turned off in Settings. Never touches our servers; there are none. • IRC REFERENCE BUILT IN IRC R602.7 header sizing, bearing and point loads, nominal vs. actual lumber sizes, steel gauge-to-mil, common rough opening sizes, corner stud configurations, and roof pitch to angle conversions. PRIVACY FIRST StudPlan runs on-device. No login. No analytics. No advertising. No tracking SDKs. No camera, photo library, location, or microphone access requested. Turn on iCloud sync and your projects sync only through your own iCloud account — never through our servers, because we don't have any. 3-day free trial, then $1.99/week. Monthly, yearly, and lifetime options available. Cancel anytime. Terms of Use: https://taxlite.net/stud_plan/terms.html Privacy Policy: https://taxlite.net/stud_plan/privacy.html

Screenshots

Roof Truss Calculator4 screens
StudPlan4 screens

Verdict

The call

The clearest difference is update cadence: StudPlan at every 3 weeks against Roof Truss Calculator's every 53 months. Roof Truss Calculator's advantage is device support (3 vs 1) and iOS requirement (14.2 vs 17.0). On price, 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

Both are free to download. Roof Truss Calculator sells 3 in-app purchases, starting at $0.99 per 7 days and StudPlan sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Roof Truss Calculator ships an update every 53 months, StudPlan every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 6 level
Roof Truss Calculator versus StudPlan: the parameters behind the verdict, then further details
ParameterRoof Truss CalculatorStudPlan
PriceFreeFree
Rating3.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 53 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.2 — better17.0
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperAnna FilobokZHENGQIAO JIANG

In-app purchases

3 purchases

Roof Truss Calculator

Subscriptions3
  • Premium Access$0.997 Days
  • Premium Access$1.991 Month
  • Premium Access$5.991 Year
4 purchases

StudPlan

Subscriptions3
  • Weekly3 Days trial$1.997 Days
  • Monthly$4.991 Month
  • Yearly3 Days trial$29.991 Year
One-time1
  • Lifetime$79.99

Questions

Is Roof Truss Calculator free?
Roof Truss Calculator is free to download, with in-app purchases available.
Is StudPlan free?
StudPlan is free to download, with in-app purchases available.
Do Roof Truss Calculator or StudPlan have ads?
Neither Roof Truss Calculator nor StudPlan shows ads.
Which is updated more often, Roof Truss Calculator or StudPlan?
Roof Truss Calculator ships an update every 53 months, and StudPlan every 3 weeks. Most recently, Roof Truss Calculator was updated on November 3, 2026 and StudPlan on November 5, 2026.

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