Comparison

iDesign vs Numline

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

Head to head
About

iDesign

Create professional 2D vector drawings, illustrations, and technical designs on your iPad or iPhone. Offers precise touch-based editing with unique offset controls and a full suite of advanced tools for graphics and technical design.

Highlights
  • 2D vector drawing and design
  • Precise touch-based editing
  • Advanced path editing
  • Technical drawing tools
  • Shape libraries
  • Layer management
  • iCloud sync with XDesign
Features
Read full description

Precision 2D vector drawing and design on the iPad & iPhone. Make professional quality designs, illustrations and technical drawings on the move using your fingers at last! iDesign has unique features and offset controls which allows you to draw accurately with your finger not getting in the way or blocking your view. Full feature compatibility and automatic sync of designs via iCloud with XDesign (Mac version). User Guide (PDF) available at www.touchaware.com/apps/idesign/userguide FEATURES - A universal app for both iPad and iPhone which adapts to the native screen size of the device. - An unobtrusive icon based visual and context driven user interface with a full screen board view - Toolbars and panels with easy access to frequently used functions for a fast work flow Standard Tools & Functions - Line, polyline, square, rectangle, circle, arc, ellipse, polygons, stars & path tools - Copy and paste selected shapes and groups - Group and ungroup shapes hierarchically to create complex designs - Edit points, convert shapes to path, close shapes, add and remove points, break, weld, explode and join - Precise rotation with ability to rotate at user defined center - Object alignment tools - Fill color and pen color swatches with opacity controls, custom RGB mixer - Stroke width, line style, line caps and corner join styles, arrow ends and dash patters - Text insertion with fonts, styles, sizes, paragraph alignments, multilingual, rotate/resize - Set a background image for tracing/marking over it - Insert images, copy, paste, move, resize and position them accordingly - Multilevel Undo/Redo for all edit operations - Create multiple layers to organize & separate design components - Connector tools for drawing charts and flow diagrams Unique Features for Touch Based Editing - Offset handles for moving and positioning without your finger blocking the view - Nudge controls, allows precise movement of selected shapes or selected points - Delta transformations to apply incremental values by keyboard Advanced Tools for Graphics Design - Advanced path editing options for corner, smooth and symmetric control points, straighten and curve segments - Text to path conversion - Boolean operations on shapes, unite, intersect, subtract, exclude - Freehand drawing, auto smoothened paths - Gradients / color blends Advanced Tools for Technical Drawing - Circle and Arc tool based on center, start/end point, radius and angle of arc - Dimensioning tools, length as well as angular with customisable settings - Support for Feet+Inches+Fractions (U.S & older unit system)
- Architectural formatting option for Dimensions
- Dynamic grid supporting feet, inches and inch fractions at different zoom levels Units & Board Setup - Support for standard and custom board sizes. - Set a drawing scale - Full set of standard unit systems. - Unit aware Grid with customisable settings - Snap to grid, snap to object and points - Unit aware rulers Shape libraries to organise and reuse shapes - Add, remove and organise shapes in your own libraries - A set of standard shapes for creating floor plans included Export/Import & Print - Export designs to JPEG, PNG, PDF & SVG formats - Import SVG files - Share your designs with other iDesign users via Email - Dropbox support for Export, Import - AirPrint Support iDesign is available as a monthly or yearly subscription and includes a free trial period that begins once your purchase has been confirmed with your Apple ID account. At the end of the trial your subscription will start and renew automatically. Your Apple ID account will be charged for the upcoming period unless you disable auto-renew or cancel your subscription in your Account Settings at least 24-hours prior to the end of the current period. Terms of Use: http://www.touchaware.com/apps/termsofuse Privacy policy: http://www.touchaware.com/apps/privacy

About

Numline

Features
Read full description

Numline is a calculator you type into like a notepad. Write your maths in plain words on the left, and answers appear instantly on the right. No buttons to hunt for. No equals key. Just type a line — "120 USD to EUR", "20% of 4800", "rent = 2400" — and Numline works it out as you go. WHAT YOU CAN DO • Plain-language maths — write "95 EUR * 4" and read the answer beside it • Currencies — convert between world currencies: "cost in JPY to USD". Rates update automatically; offline, the last ones stand in and results are approximate • Units — length, mass, volume, temperature and more: "120 km to miles", "356 F to C" • Percentages — tips, discounts and splits in words: "89 + 15%", "240 / 4 + 10%" • Variables — name a value once and reuse it: "rate = 85", "32 * rate" • Totals — "total" sums the block above; a blank line starts a fresh one • Dates — "trip - today", "trip + 2 weeks" and other quick date maths • Functions — sqrt, round, abs and friends when you need them • Shorthand — "19k + 80k" reads thousands the way you say them • Themes — Classic, Lime, Violet and Amber, each colouring your notation its own way • Many notepads — keep a separate sheet for every plan Every line is live. Change a number and everything below it updates. It reads back like a note you wrote to yourself, so you can always see how you reached an answer. Numline stays quiet and focused: a dark editor, syntax colours you choose, and nothing in your way. No account. No subscription. No ads. Your notepads stay on your device. Just type.

Screenshots

iDesign4 screens
Numline4 screens

Verdict

The call

The clearest difference is price: iDesign at Free against Numline's $0.99. iDesign also leads on iOS requirement (15.5 vs 18.0). Numline's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs every 3 months). On ads and device support 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

iDesign is free to download; Numline costs $0.99 up front. iDesign sells 3 in-app purchases, starting at $6.99 per month. Numline asks for nothing beyond the download.

UpkeepUpdate frequency

iDesign ships an update every 3 months, Numline every 2 days. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
iDesign versus Numline: the parameters behind the verdict, then further details
ParameteriDesignNumline
PriceFree — better$0.99
Rating2.6 (87 ratings) — better—
Positive reviews50.2% of reviews—
Number of ratings87 — better—
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better18.0
Further details — not scored
Size86 MB5 MB
Age rating4+4+
DeveloperTouchAware LimitedZhiqi Pan

In-app purchases

3 purchases

iDesign

Subscriptions2
  • Monthly Subscription14 Days trial$6.991 Month
  • Yearly Subscription14 Days trial$39.991 Year
One-time1
  • Lifetime$79.99
None

Numline

No in-app purchases

Questions

Is iDesign free?
iDesign is free to download, with in-app purchases available.
Is Numline free?
Numline costs $0.99, with no in-app purchases.
Do iDesign or Numline have ads?
Neither iDesign nor Numline shows ads.
Which is updated more often, iDesign or Numline?
iDesign ships an update every 3 months, and Numline every 2 days. Most recently, iDesign was updated on October 21, 2026 and Numline on October 13, 2026.

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