Comparison

Fraction Calculator vs CONVERT UNITS

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

Award winning Feet Inch Fraction Calculator & Metric converter for iPhone and iPad. Designed with simplicity, usability and beauty in mind! FEATURES: - Elegant & Intuitive interface - Decimal to fraction converter - Fraction to decimal conversion - Displays both the equation & the result at the same time - Advanced editing by easily going back and forth - Can be added to Today Screen Ideal for those who work in construction, woodworking and for students to check up their homework! If you are looking for more advanced features you can upgrade to one or more of the following: - Present Fractions (1/2" through 1/64") - Work in and convert between all building dimensional formats: feet-inch-fractions, inch fraction, yards, decimal feet (10th, 100th), decimal inches and metric (km, m, cm, mm) - Multiple themes to choose from Enjoy the FREE Fraction calculator with, no ads, no prompts & if you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CONVERT UNITS

Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.

Highlights
  • Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currency
  • Automatic currency updates
  • 160 currencies available
  • Multitasking enabled for iPad
  • Alphabetical quick links for units
  • Customizable startup categories
  • Adjustable accuracy and rounding
Features
Read full description

CONVERT UNITS is built for the numbers a general converter treats as an afterthought: torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance. Close to 40 of its 72 categories are scientific and engineering categories, covering 685 units in total, in a fast, no-nonsense dark interface built to do one thing: give you the answer and get out of the way. Two scrolling lists, a big keypad, and a result that updates as you type. 72 CATEGORIES, 685 UNITS Torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance — plus length, weight, temperature, speed, area, volume, time, power, energy, data, fuel economy and dozens more. CURRENCY, CRYPTO AND METALS - 160 world currencies, with rates refreshed daily. - 126 cryptocurrencies. - Gold, silver, platinum and palladium. - Update rates automatically, once a day, on every launch, or only when you ask. BUILT TO BE FAST - An alphabetical index down the side of every list - jump straight to a unit instead of scrolling past hundreds. - Search every unit in every category from a single field. - Launch straight into the category you actually use and skip the home screen entirely. - Hide the categories you never touch, so the grid stays yours. PRECISION ON YOUR TERMS - Trim results by significant figures or by decimal places, whichever the spec calls for. - Significant figures keep small numbers detailed: 0.030333 at 3 figures gives 0.0303. - Decimal places line every result up on the same column: 2 places gives 13.78. - Round results up, or leave them exact. THE DETAILS - 33 languages: English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Chinese (Simplified), Chinese (Traditional), Russian, Arabic, Hindi, Thai, Turkish, Vietnamese, Swedish, Norwegian, Danish, Dutch, Romanian, Ukrainian, Czech, Polish, Croatian, Hungarian, Slovak, Malay, Indonesian, Urdu, Tamil, Telugu, and Bangla. - iPhone and iPad, with a layout built for each, plus Split View so you can convert alongside another app. - Mute the keypad and lock rotation if you prefer. - A dark design with bold, readable figures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units/privacy.html

Screenshots

Fraction Calculator1 screens
CONVERT UNITS4 screens

Verdict

The call

The clearest difference is in-app purchases: CONVERT UNITS at none against Fraction Calculator's 5. CONVERT UNITS also leads on ratings volume (1.4K vs 157). Fraction Calculator's advantage is ads (none vs shown). On price, rating, review sentiment and update cadence 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. CONVERT UNITS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Fraction Calculator against 4.7 for CONVERT UNITS. That said, the two scores are not equally well evidenced: CONVERT UNITS has 1.4K ratings behind it against 157, so its average is the more settled of the two. Written reviews split almost evenly too, at 75% and 75% positive.

UpkeepUpdate frequency

Fraction Calculator ships an update monthly, CONVERT UNITS every 6 weeks. The most recent releases landed on September 27, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
Fraction Calculator versus CONVERT UNITS: the parameters behind the verdict, then further details
ParameterFraction CalculatorCONVERT UNITS
PriceFreeFree
Rating4.7 (157 ratings)4.7 (1.4K ratings)
Positive reviews75.0% of reviews75.0% of reviews
Number of ratings1571.4K — better
Update frequencyMonthly — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size41 MB21 MB
Age rating4++4
DeveloperxNeat.comAdysseus

Customer experience

Fraction Calculator

All ratings157 ratings
Positive93.0%
Neutral2.5%
Negative4.5%
Written reviews108 reviews
Positive75.0%
Neutral4.6%
Negative20.4%

CONVERT UNITS

All ratings1,358 ratings
Positive94.0%
Neutral3.2%
Negative2.7%
Written reviews32 reviews
Positive75.0%
Neutral6.3%
Negative18.8%

User reviews

Fraction Calculator

From 157 App Store ratings

What we love

  • 👍 Intuitive and easy-to-use interface
  • 🚀 Fast calculation performance
  • 💡 Excellent for woodworking and construction projects
  • 🎨 Clean, customizable design with multiple themes
  • 📐 Handles fractions beautifully with imperial measurements

Room to improve

  • 💰 Extremely expensive subscription model
  • 🔐 Paywall blocks most useful features in free version
  • 😞 Recent update changed from free to paid model
  • 🎯 Unclear which features require payment
  • 🖱️ Small buttons prone to accidental clicks

CONVERT UNITS

From 1.4K App Store ratings

What we love

  • 👍 Quick & easy to use
  • 👍 Ease of use
  • 👍 Simple and easy to use
  • 👍 Well thought out and easy to use
  • 👍 Excellent and very reliable

Room to improve

  • 🐛 Ads obstruct use
  • 🐛 Subscription required to remove ads
  • 🐛 Currency conversion not working

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

CONVERT UNITS

Reported bugs

2 issues
  • App got stuck, required uninstall/reinstall to fix
  • Navigation issues, unable to get back to home page

Requested features

2 requests
  • Option to convert between functions (length to volume)
  • Remember last conversion settings for each category

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
None

CONVERT UNITS

No in-app purchases

Questions

Is Fraction Calculator free?
Fraction Calculator is free to download, with in-app purchases available.
Is CONVERT UNITS free?
CONVERT UNITS is free to download, with no in-app purchases.
Which has better reviews, Fraction Calculator or CONVERT UNITS?
Fraction Calculator and CONVERT UNITS are both rated 4.7 out of 5 on the App Store, from 157 and 1.4K ratings respectively.
Do Fraction Calculator or CONVERT UNITS have ads?
CONVERT UNITS shows ads; Fraction Calculator does not.
Which is updated more often, Fraction Calculator or CONVERT UNITS?
Fraction Calculator ships an update monthly, and CONVERT UNITS every 6 weeks. Most recently, Fraction Calculator was updated on September 27, 2026 and CONVERT UNITS on September 25, 2026.

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