Comparison

HorizonRoll vs Site Calc Pro

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

Head to head
About

HorizonRoll

This app turns your iPhone into a professional action camera with advanced stabilization and horizon lock. Capture smooth, leveled video in various aspect ratios and resolutions, eliminating the need for external gimbals.

Highlights
  • 360-degree Horizon Lock
  • Action Mode stabilization
  • Portrait and landscape aspect ratios
  • 4K 60fps recording
  • Swipeable gallery
  • No external gimbal needed
Features
Read full description

HorizonRoll transforms your iPhone into a pro-level action camera. Featuring a flawless 360-degree Horizon Lock and an aggressive Action Mode, HorizonRoll captures buttery-smooth, perfectly leveled video no matter how much you run, jump, or spin. Switch between portrait and cinematic landscape aspect ratios, toggle 4K 60fps, and review your shots in the intuitive swipeable gallery. Forget the bulky gimbal—just hit record and let the software do the work. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Site Calc Pro

Features
Read full description

Site Calc Pro is a practical construction calculator built for fast jobsite math, material estimates, layout work, and project-based calculation history. It is not just a calculator that gives you the last answer. Site Calc Pro keeps an editable tape of your work, organized by project, so you can check previous calculations, reuse entries, duplicate results, copy your tape, and come back to the numbers later. Built for real construction workflow Site Calc Pro is designed for the repeated calculations builders, contractors, carpenters, and estimators do every day. Work in familiar units, move quickly between feet-inch fractions and metric, solve practical layout and estimating problems, and keep an editable record of your calculations by project. One paid app purchase. No subscription. CALC + TAPE WORKFLOW Site Calc Pro is built around two main sections: Calc Fast construction calculator input for dimensions, units, layouts, materials, roofing, stairs, shapes, costs, wastage, and conversions. Tape A project-based tape where your calculations can be reviewed, edited, duplicated, saved, copied, and organized instead of being lost after the next calculation. CONSTRUCTION CALCULATOR FEATURES • Feet-inch-fraction math • Metric entry and conversions • Decimal, fraction, square, cubic, weight, area, and volume calculations • Length, width, and height stored dimensions • Area, volume, perimeter, wall area, room area, and square-up workflows • Cost, percent, wastage, board feet, and material estimating tools • Weight/volume and density calculations • Memory, save, autosave, and project-based tape history ROOFING, RAFTERS AND FRAMING • Pitch, rise, run, and diagonal calculations • Angle, grade, ratio, plumb, and level outputs • Common rafter calculations • Hip/valley and jack rafter calculations • Irregular pitch and irregular jack rafter workflows • Roof area and roof covering estimates • Rake wall and arched wall calculations • On-center spacing support for layout work STAIRS, SHAPES AND LAYOUT • Stair layout calculations • Risers, treads, stringers, total rise, and run workflows • Circle and arc calculations • Polygon calculations • Column and cone area/volume calculations • Crown / compound miter calculations • Degree and DMS conversion support MATERIALS AND ESTIMATES Site Calc Pro includes practical estimating tools for common construction materials and quantities, including: • Drywall • Tile • Paint • Brick and block • Flooring • Fence panels • Posts • Studs • Roofing coverage • Concrete, gravel, and material weight estimates • User-set coverage, spacing, and density values where applicable BUILT-IN HELP Many buttons include long-press help with examples, key sequences, notes, and output explanations. Advanced functions are explained inside the app, so you can learn the workflow without leaving the calculator. WHY USE SITE CALC PRO? Construction math is often not difficult because you do not know the formula. It is difficult because you are busy, interrupted, switching units, checking estimates, repeating similar calculations, and trying not to lose track of the numbers. Site Calc Pro is built to make that work faster and clearer. Calculate in feet-inch fractions or metric. Solve practical construction layouts and estimates. Save the working, not just the result. From the developer of Construction Calc Pro, Site Calc Pro is a serious paid utility for builders, carpenters, contractors, estimators, tradespeople, and anyone who needs dependable construction calculations on their phone.

Screenshots

HorizonRoll3 screens
Site Calc Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Site Calc Pro at none against HorizonRoll's 3. Site Calc Pro also leads on update cadence (daily vs every 3 days). On price, 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

Both are free to download. HorizonRoll sells 3 in-app purchases, starting at $0.99 per month. Site Calc Pro asks for nothing beyond the download.

UpkeepUpdate frequency

HorizonRoll ships an update every 3 days, Site Calc Pro daily. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
HorizonRoll versus Site Calc Pro: the parameters behind the verdict, then further details
ParameterHorizonRollSite Calc Pro
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 daysDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15 — better15.6
Further details — not scored
Size2 MB85 MB
Age rating4+4+
DeveloperCONSOLIDATED DISTRIBUTORS LLCTroy Knight

In-app purchases

3 purchases

HorizonRoll

Subscriptions2
  • Monthly Pro7 Days trial$0.991 Month
  • Yearly Pro7 Days trial$9.991 Year
One-time1
  • Lifetime Pro$14.99
None

Site Calc Pro

No in-app purchases

Questions

Is HorizonRoll free?
HorizonRoll is free to download, with in-app purchases available.
Is Site Calc Pro free?
Site Calc Pro is free to download, with no in-app purchases.
Do HorizonRoll or Site Calc Pro have ads?
Neither HorizonRoll nor Site Calc Pro shows ads.
Which is updated more often, HorizonRoll or Site Calc Pro?
HorizonRoll ships an update every 3 days, and Site Calc Pro daily. Most recently, HorizonRoll was updated on October 28, 2026 and Site Calc Pro on October 31, 2026.

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