Comparison

Scales HD vs Invoice Maker・Estimate Creator

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

Head to head
About

Scales HD

This app provides a digital architectural and engineering scale ruler with various US and Metric scales. It includes tools like a tape measure and spirit level, with options to flip scales and lock scrolling. Control your music library directly from the app.

Highlights
  • Architectural US Scales
  • Engineering US Scales
  • Metric SI Scales
  • Tape Measure Tool
  • Spirit Level Tool
  • Flip Scales Option
  • Music Control
Features
Read full description

Scales HD puts a real architect's and engineer's scale rule in your pocket, drawn at true physical size on every iPhone and iPad, so a millimetre on screen is a millimetre on your drawing. Around it: a CAD, Room Scan, a PDF blueprint reader, a construction calculator, notes and more. TRUE SIZE ON EVERY DEVICE • Exact screen density for every iPhone, iPad and iPhone Duo model • Zero at the screen edge or the device edge; optional calibration TRIANGULAR SCALES, JUST LIKE THE REAL ONE • Turn the scale to its other sides; all four edges on each, the original artwork's grooves and faces • One tap prints the US ↔ metric equivalent beside every scale: 1:48 next to 1/4" = 1'-0" • Two measuring lines read in both edge scales at once, with snapping EVERY SCALE YOU USE • US architectural 1/32" to 12" = 1'-0"; engineering 1" = 10' to 120' • Metric 1:1 to 1:10000, civil and survey; mechanical; UK and Japanese rules • Enlargements, maps 1:24000 to 1:250000, model rail and kits; read any edge at ×10 or ×100 • Your own scales, any ratio, in your own color CAD • Walls, doors, windows, furniture and dimensions at real size; freehand too • Booleans, trim, extend, fillet, offset, arrays, layers, edit in place • About 700 templates: full project sets, homes, interiors, ADA, landscape, sections, details, MEP • Export true-scale PDF or SVG, PNG, DXF and DWG; open DWG and DXF drawings ROOM SCAN (LiDAR iPhone and iPad) • Scan rooms into floor plans, elevations, a room schedule and 3D models • Stitch rooms, set a measured length, export USDZ, OBJ, glTF, IFC and DXF, or open as a CAD drawing BLUEPRINTS • PDF drawing sets as sheets you can search and bookmark • Set the sheet's scale and measure lengths, areas and counts; mark up with clouds, callouts and stamps • Compare revisions; stand a plan in the room at 1:1 in AR CONSTRUCTION CALCULATOR • Feet-inch-fraction and metric, mixed freely: 5'-3 1/2" + 80 cm • Areas, volumes, diagonal, pitch, stairs, circles; a tape of your calculations NOTES THAT SKETCH • Lists, checklists and a full row of symbols, fractions and units over the keyboard • Drop in pictures, PDF pages and CAD drawings, then move and size them; text flows around • Quick sketch stickies: draw with a finger or Apple Pencil in any color and pen VOICE • A microphone on every screen: "use 1 to 50", "3 feet 4 inches plus 2 feet", "place a queen bed against the north wall". Understood on the device MORE TOOLS • Unit converter: 11 families, 94 units • Scale converter: drawing ↔ real size, redraw at another scale, find a drawing's scale • Protractor: read an angle on paper at true size, between two surfaces by tilt, or on the iPhone Duo's hinge, with the supplement, the miter and the saw setting • Spirit level with the original bubble, compass, tape, cutting board, haptics MADE FOR iPHONE DUO • Closed, every tool fits the outer screen around the camera; open, the big screen; half open, the calculator, level, compass, protractor and blueprints keep off the fold; the hinge itself is a protractor iPhone and iPad, iCloud sync between your devices. No ads, no tracking, no account, no subscription.

About

Invoice Maker・Estimate Creator

Create, send, and manage professional invoices, quotes, and receipts quickly and easily. Organize all your billing documents in one place to improve cash flow and get paid faster. Ideal for freelancers and small businesses seeking a simple, efficient billing solution.

Highlights
  • Smart digital invoicing
  • Fast and simple billing
  • One-tap invoice creation
  • Organized invoice dashboard
  • Printable documents (subscription)
  • Customizable with logo and business details
Features
Read full description

Smart Invoice Maker & Bill Generator Create, send, and manage invoices effortlessly — all from one powerful app built for freelancers, small businesses, and professionals who value speed, simplicity, and smart organization. Whether you’re billing clients, tracking payments, or managing your business finances, this app helps you stay professional and get paid faster — anytime, anywhere. Main features: ► Smart Digital Invoicing Make professional invoices, quotes, and receipts in seconds. Add your logo, business details, and payment info — all from your phone. ► Fast & Simple Billing Bill customers on the go with a single tap. Turn estimates into invoices instantly and send them by email, text, or PDF. ► One-Tap Invoice Creation Save time with reusable templates and auto-filled client details. Generate invoices faster than ever. ► Invoices Organizing All your bills, receipts, and estimates neatly stored in one dashboard. Sort, search, and export with ease. In addition, we offer documents printing functionality with subscription. --- Why Users Love It ► Create smart digital invoices instantly ► Bill customers fast and professionally ► Organize all invoices in one secure place ► Simplify payments and improve cash flow --- Perfect For Freelancers, small business owners, contractors, consultants, and anyone who wants an easier way to handle billing without the paperwork or hassle. Download now and take control of your business — create, send, and track invoices anytime, anywhere! Need help? We’re here to support you: benoitdaucourt@icloud.com Privacy Policy: https://docs.google.com/document/d/1mUKeSv0wkrNmpLpgXIKsCmeZF1U58tcd Terms of Use: https://docs.google.com/document/d/1rrkxypEEXXreb5DrpLAf61AY3O6hNlzt

Screenshots

Scales HD4 screens
Invoice Maker・Estimate Creator4 screens

Verdict

The call

The clearest difference is price: Invoice Maker・Estimate Creator at Free against Scales HD's $7.99. Invoice Maker・Estimate Creator also leads on update cadence (weekly vs every 95 months). Scales HD's advantage is rating (4.2 vs 2.0) and in-app purchases (none vs 1). On ads 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

Invoice Maker・Estimate Creator is free to download; Scales HD costs $7.99 up front. Invoice Maker・Estimate Creator sells 1 in-app purchase, starting at $6.99 per 7 days. Scales HD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Scales HD holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Scales HD has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Scales HD ships an update every 95 months, Invoice Maker・Estimate Creator weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
Scales HD versus Invoice Maker・Estimate Creator: the parameters behind the verdict, then further details
ParameterScales HDInvoice Maker・Estimate Creator
Price$7.99Free — better
Rating4.2 (5 ratings) — better2.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 95 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.5
Further details — not scored
Size7 MB14 MB
Age rating4+4+
DeveloperMarcelo Mejia CoboArlo Balme

Customer experience

Scales HD

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Invoice Maker・Estimate Creator

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Scales HD

No in-app purchases

1 purchases

Invoice Maker・Estimate Creator

Subscriptions1
  • Weekly Unlimited Access3 Days trial$6.997 Days

Questions

Is Scales HD free?
Scales HD costs $7.99, with no in-app purchases.
Is Invoice Maker・Estimate Creator free?
Invoice Maker・Estimate Creator is free to download, with in-app purchases available.
Which has better reviews, Scales HD or Invoice Maker・Estimate Creator?
Scales HD is rated higher. Scales HD averages 4.2 out of 5 from 5 ratings, while Invoice Maker・Estimate Creator averages 2.0 from 1 ratings.
Do Scales HD or Invoice Maker・Estimate Creator have ads?
Neither Scales HD nor Invoice Maker・Estimate Creator shows ads.
Which is updated more often, Scales HD or Invoice Maker・Estimate Creator?
Scales HD ships an update every 95 months, and Invoice Maker・Estimate Creator weekly. Most recently, Scales HD was updated on October 23, 2026 and Invoice Maker・Estimate Creator on October 24, 2026.

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