Comparison

Fraction Calculator vs iDrawlix Mobile

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

Head to head
About

Fraction Calculator

This tool converts between decimals and fractions, and also handles unit conversions for construction and metric measurements. It offers an intuitive interface for calculations and editing, with advanced features available through upgrades.

Highlights
  • Decimal to fraction conversion
  • Fraction to decimal conversion
  • Unit conversion (feet, inches, metric)
  • Simultaneous equation and result display
  • Advanced editing capabilities
  • Today Screen integration
Features
Read full description

Fraction Calculator for feet, inches and fractions: a feet and inches calculator, a decimal to fraction converter and a unit converter in one app for iPhone and iPad. Work the way you measure. Type feet, inches and fractions of an inch together, like 5' 3 3/8", and get the answer as a fraction to the resolution you choose, from 1/2" down to 1/64". The equation and the result stay on screen together, and you can step back into the equation to change any part of it. FEET AND INCHES CALCULATOR • Calculate with feet, inches and inch fractions without converting by hand • Answers rounded to the fraction you work in: 1/2", 1/4", 1/8", 1/16", 1/32" or 1/64" • Whole numbers and fractions together, the way a tape measure reads DECIMAL TO FRACTION AND FRACTION TO DECIMAL • Turn a decimal into the nearest fraction, or a fraction into a decimal • Decimal inches to fractions, and decimal feet to feet and inches UNIT CONVERTER • Convert between feet-inch-fractions, inch fractions, miles, yards, decimal feet, decimal inches and metric: km, m, cm and mm • Inches to mm, cm to inches, feet to inches, yards to feet, and mm to inches as a fraction MADE FOR THE JOB • A measurement calculator for construction, carpentry, woodworking and DIY • Students can use it to check fraction homework • Themes to choose from • Layouts for iPhone, iPad and iPhone Duo Fraction Calculator is free to use with ads. A subscription removes the ads and unlocks the themes. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

iDrawlix Mobile

This app allows users to design and verify partially full conduits and open channels. It offers various cross-section types and hydraulic calculation models, displaying real-time flow depth and discharge. Users can also generate stage-discharge curves and analyze hydraulic grade lines.

Highlights
  • Playground concept for real-time experimentation
  • Seven cross-section types
  • Four hydraulic calculation models
  • International and Imperial unit systems
  • Real-time normal flow depth and discharge display
  • Stage-Discharge curve generation
  • Hydraulic Grade Line (HGL) representation
Read full description

iDrawlix® Mobile comes as free App, with two In App Purchases options which will unlock Watermarks and file sharing, respectively. It replaces iDrawlix® Premium, for which we will do not grant our assistance starting June, 30 2021, because his not full compatibility with iOS 13 or newer. It has been, fully recompiled in native Swift also for Mac OS. Now it is newer, faster and graphically more beautiful.  iDrawlix® can handle a single Sewer or Open Channel, basing on the Playground concept. The iDrawlix® Playground concept allows Users approaching design and verification of partially full conduits or open channels to immediately experiment what happens to their project at any change in the settings, without the burden of building complex ad hoc models in order to get graphics and tables out of it. We chosen to provide iDrawlix® Mobile with the "Top Seven" types of cross section: - Open Channels: -Simple Trapezoidal; - Closed Channels/Sewers: -Rectangular, -Rectangular with Triangular Bottom, -Circular, -Egg-Shaped (old England Style), -Standard Egg-Shaped, -Elliptical. User can select four different Hydraulics Calculation Models: - Gauckler & Strickler, - Chezy-Bazin, - Chezy-Kutter and - Manning. Two different options of System Unit are available: - International System (IS) or - Imperial Units (IU). Each Cross Section, furthermore, can be characterised by two Roughness Coefficients: one for the bottom and one the edges (sides). All the necessary geometric parameters, are anyway explained graphically by the legend and the quotes next to the cross section represented within the Activity. iDrawlix® Mobile displays in real time, at any parameter change: - Normal Flow Depth and - Normal Flow Discharge. One of the main output of iDrawlix® Mobile is the Stage-Discharge curve of the current Cross Section. ​ Each Parameter is plotted in the classic dimensionless scale vs. the ratio Yn/H, where: - Yn is the normal depth; - H is the maximum internal depth of the given Cross Section. In the bottom View, are tabled the following parameters, for each Y, assumed as normal depth Yn: - σn, as the Hydraulic Cross Section involved (m²) or (ft²), - HRn, as the Hydraulic Radius (m) or (ft), - χn, as the corresponding Wet Perimeter (m) or (ft), - Qn, as the normal Discharge (m³/s) or (ft³/s), - Vn, as the normal Velocity (m/s) or (ft/s), - Vc, velocity in critical conditions (m/s) or (ft/s), - Fr, that is the Froud number (n). iDrawlix® Mobile can represent also the HGL (Hydraulic Grade Line) for a given free surface channel or sewer, which is plotted under hypothesis of gradually varied flow. Users can consider Channels or Sewers of semidefinite length in the Mild Slope as well as in the Steep Slope case. Boundary conditions are set interactively by the User, imposing the known depth into the starting downstream cross section (profiles known as M1 and M2) for Mild Slope Channels or, in the opposite case, by imposing the known depth into the starting upstream cross section (profiles known as S2 and S3) for Steep Slope Channels. ​All the parameters computed within the integration used in order to plot the HGL graph, are represented also in the tabular format as follows: - Y(i) depth of the current. Dimensions: (m) or (ft); - X(i) abscissa corresponding to Y(i), computed as negative for upstream wise case (mild slope) and positive for downstream wise integrations (steep slope). Dimensions: (m) or (ft); - V(i) velocity of the current in the cross section i. Dimensions: (m/s) or (ft/s); - J(i) energy loss or gain between the i-th and the i+1-th cross section. Dimensions: (m/m) or (ft/ft); - E(i) energy computed as sum of the hydraulic grade and velocity head. Dimensions: (m) or (ft). We strongly recommend to buy the "Full unlock forever" In App Purchase in order to get the max from your iDrawlix® Mobile experience. Old Premium version owners are kindly requested to email to idrawlix@idrawlix.com in order to get a new free license.

Screenshots

Fraction Calculator4 screens
iDrawlix Mobile4 screens

Verdict

The call

The clearest difference is rating: Fraction Calculator at 4.7 against iDrawlix Mobile's 1.0. Fraction Calculator also leads on update cadence (monthly vs every 10 months) and ratings volume (175 vs 1). iDrawlix Mobile's advantage is review sentiment (100% vs 75%). On price, ads, in-app purchases and monetization model 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. Fraction Calculator sells 5 in-app purchases, starting at $4.99 per month and iDrawlix Mobile sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fraction Calculator holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Fraction Calculator has 175 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 75% of Fraction Calculator's written reviews are positive against 100% of iDrawlix Mobile's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Fraction Calculator ships an update monthly, iDrawlix Mobile every 10 months. The most recent releases landed on October 29, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Fraction Calculator versus iDrawlix Mobile: the parameters behind the verdict, then further details
ParameterFraction CalculatoriDrawlix Mobile
PriceFreeFree
Rating4.7 (175 ratings) — better1.0 (1 ratings)
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings175 — better1
Update frequencyMonthly — betterEvery 10 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.4 — better17.2
Further details — not scored
Size50 MB6 MB
Age rating4+4+
DeveloperxNeat.comStudio Envisys

Customer experience

Fraction Calculator

All ratings174 ratings
Positive92.5%
Neutral2.9%
Negative4.6%
Written reviews112 reviews
Positive75.0%
Neutral5.4%
Negative19.6%

iDrawlix Mobile

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Fraction Calculator

Reported bugs

8 issues
  • App crashes on opening (iPad)
  • Crashes when using plus buttons (iPad)
  • Syntax errors during fraction calculations
  • App closes immediately upon opening
  • Unwanted decimal points in fraction results
Show 3 more
  • Duplicate app installations that won't delete
  • Tutorial buttons not functioning properly
  • Unresponsive UI elements

Requested features

7 requests
  • Save calculations for later use
  • Support for sixths and twelfths (for typography/design)
  • Reorganizable or customizable unit lists
  • Full fraction support on Apple Watch
  • Free trial period before requiring subscription
Show 2 more
  • Ability to disable unused units to reduce scrolling
  • Integration into main Calculator+ app instead of separate app

iDrawlix Mobile

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Fraction Calculator

Subscriptions2
  • Fraction Calculator3 Days trial$4.991 Month
  • Fraction Calculator7 Days trial$39.991 Year
One-time3
  • Fraction Calculator Pro$0.99
  • Fraction Calculator$3.99
  • Fraction Calculator Plus$4.99
2 purchases

iDrawlix Mobile

One-time2
  • Watermarks unlock forever.$2.99
  • Full unlock forever.$5.99

Questions

Is Fraction Calculator free?
Fraction Calculator is free to download, with in-app purchases available.
Is iDrawlix Mobile free?
iDrawlix Mobile is free to download, with in-app purchases available.
Which has better reviews, Fraction Calculator or iDrawlix Mobile?
Fraction Calculator is rated higher. Fraction Calculator averages 4.7 out of 5 from 175 ratings, while iDrawlix Mobile averages 1.0 from 1 ratings.
Do Fraction Calculator or iDrawlix Mobile have ads?
Neither Fraction Calculator nor iDrawlix Mobile shows ads.
Which is updated more often, Fraction Calculator or iDrawlix Mobile?
Fraction Calculator ships an update monthly, and iDrawlix Mobile every 10 months. Most recently, Fraction Calculator was updated on October 29, 2026 and iDrawlix Mobile on October 14, 2026.

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