Calculator XLt vs CONVERT UNITS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator XLt
This app combines five essential calculation tools into one convenient package. It offers standard, scientific, unit conversion, loan, and tip calculators with a user-friendly interface and large buttons. Available on multiple Apple devices, it streamlines everyday calculations.
- Standard Calculator
- Scientific Calculator
- Unit Converter
- Loan Calculator
- Tip Calculator
- Calculation History
- Widgets
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5 for the Price of 1! Calculator XL is a Universal App for iPhone, iPad, iPod, and iMac, offering: • Standard Calculator • Scientific Calculator • Unit Converter • Loan Calculator • Tip Calculator Quick, accurate, and easy to use, Calculator XL features large, illuminated buttons for standard operations and a sleek, polished design. Features: • Standard Calculator: Extra-large buttons with additional features like delete, x², √, and %. • Scientific Calculator: 30 advanced functions with color-coded, multifunction buttons. • Unit Converter: Supports length, volume, weight, and temperature conversions, with color-coding for Imperial and US units. Perfect for any use, especially in the kitchen! On iPad, switch between calculators with the flip of a switch. On iPhone, rotate left for the Scientific Calculator or right for the Unit Converter. Extra Features: • History list of calculations • Widgets. 2 types, one for history, and one for current number and memory • 29 types of unit conversions with color-coding • 30 scientific functions • Handy delete (Del) button • Memory with preview display • Extra-large buttons for ease of use • One-tap copy • x², √, and % in standard mode Calculator XLt Free is the free version of Calculator XL, available for both iPad and iPhone.
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.
- 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
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160 currencies · 126 cryptocurrencies · 685 units across 72 categories CONVERT ANYWHERE, EVEN OFFLINE Convert units without an internet connection. Currency and crypto conversions use your saved rates offline; an internet connection is needed to refresh rates. • No Full Screen Ads • Find units quickly with search and an alphabetical index • Control precision with decimal places and significant figures • Choose your starting category and hide categories you don’t use • Personalize your colors with curated or custom themes, available with Premium Designed for iPhone and iPad, with Split View support Dark and light appearance support CONVERSION CATEGORIES Everyday conversions Length, weight, temperature, area, volume, speed, time, fuel economy, pace, data, data transfer rate, angle, shoe sizes, ring sizes, amount, image resolution, typography and blood sugar Engineering and mechanics Pressure, torque, force, energy, power, acceleration, angular acceleration, moment of inertia, density, specific volume, flow, mass flux density, surface tension, viscosity, kinematic viscosity and permeability Electricity and magnetism Current, voltage, resistance, charge, frequency, capacitance, inductance, conductance, electric field strength, electric resistivity, electric conductivity, magnetic flux, magnetic field strength, magnetic flux density, magnetomotive force, linear charge density, surface charge density, volume charge density, linear current density and surface current density Heat and temperature Temperature interval, thermal conductivity, specific heat capacity, heat density, heat flux density, heat transfer coefficient and thermal expansion Chemistry Molar concentration, molar mass and molar flow rate Light, sound and radiation Luminance, illumination, luminous intensity, sound, radiation, radioactivity and exposure Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units/privacy.html
Screenshots
Verdict
The clearest difference is ads: Calculator XLt at none against CONVERT UNITS's shown. CONVERT UNITS's advantage is update cadence (weekly vs every 2 months) and monetization model (ad-supported vs free with in-app purchases). On price, rating, review sentiment and ratings volume 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
Both are free to download. Calculator XLt sells 1 one-off in-app purchase and CONVERT UNITS sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for Calculator XLt against 4.7 for CONVERT UNITS. Both are backed by a comparable volume of ratings — 573 and 1.4K respectively. Written reviews are what separate them: 80% of Calculator XLt's written reviews are positive against 76% of CONVERT UNITS's.
Calculator XLt ships an update every 2 months, CONVERT UNITS weekly. Both last shipped on October 20, 2026.
| Parameter | Calculator XLt | CONVERT UNITS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (573 ratings) — better | 4.7 (1.4K ratings) |
| Positive reviews | 80.2% of reviews — better | 75.8% of reviews |
| Number of ratings | 573 | 1.4K — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Gero Mazza | Adysseus |
Customer experience
Calculator XLt
CONVERT UNITS
User reviews
Calculator XLt
From 573 App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Efficient and fast
- 🔒 No ads
- 💡 Useful features like tip and loan calculators
- 👍 Large, clear buttons
Room to improve
- 🐛 Crashes or not working on newer iOS versions
- 🐛 Some functions not available in free version
- 🐛 Inaccurate calculations in certain cases
- 🔒 Paid version not worth the upgrade
CONVERT UNITS
From 1.4K App Store ratingsWhat 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
Calculator XLt
Reported bugs
3 issues- Crashes on iPhone XR
- Inaccurate calculations for 0.3 - 0.4
- Free version lacks many advertised features
Requested features
4 requests- Add support for Bluetooth keyboard
- Include more scientific functions
- Improve conversion options
- Provide a dark mode option
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
Calculator XLt
- Calculator XL Full Version$9.99
CONVERT UNITS
- Remove ads$0.991 Month
- Remove ads$19.99
Questions
Is Calculator XLt free?
Is CONVERT UNITS free?
Which has better reviews, Calculator XLt or CONVERT UNITS?
Do Calculator XLt or CONVERT UNITS have ads?
Which is updated more often, Calculator XLt or CONVERT UNITS?
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