iCalcline vs Amount
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iCalcline
This app is a modern algebra calculator for iOS that can solve complex math expressions with variables and functions. It offers a customized keyboard for easy input and displays results instantly. Users can create and manage an unlimited number of variables and constants.
- Evaluates complex algebraic expressions
- Supports variables and constants
- Customized keyboard for easy input
- Instant result display
- Unlimited variable and constant management
- Step-by-step solving option
- High precision calculations
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iCalcline is a modern algebra calculator for iOS It can solve math expression with any level of parenthesis and functions You can use algebraic expression with numeric values and or variables constant names You can use in expression the variables and constants you created in the internal tables: 'alpha=bravo+K_1' (bravo will be taken from the variable table, K_1 from the const table and alpha will be assigned or created in the variable table) You can create, manipulate, delete and use how many variables you like inside the app. The internal iOS keyboard provides helpers to insert available functions, variables, constants, operators. Result is displayed immediatly. KEY POINTS • Evaluates mathematical expressions with parentheses, nested functions, variables and constants • Easy to use • The user simply inserts an expression and iCalcline displays the result • Variable creation and reference inside expressions are very easy using an interactive list. FEATURES • Algebra made easy and simple • Manages any nested level of parentheses using the correct precedence • Check your expression syntax in advance signaling errors • Can use an internal variable and constant table with editable values • You can manages unlimited numbers of variables and constant you like in the internal tables. • You can use in expression the variables and constants you created in the internal tables: 'alpha=bravo+K_1' (bravo will be taken from the variable table, K_1 from the const table and alpha will be assigned or created in the variable table) • Customized keyboard with Functions, variables table, constants table and frequent used symbols available to insert with a single touch • Can change on the fly calculation precision (up to 9 decimals thanks to use of long double calculation) • Variable font sizes • Select a variable or a value and inserting a function will wrap it inside the function parenthesys • Uses decimal and group separator in accordance with your local settings • Full log of executed calculations • Optional step by step solving showing all the mathematical passages in the log. • Retains values over successive re-launch • DEG° and RAD calculation for trigonometric functions • Based on a custom fast calculation engine and used also on macOS in Calcline and TS Calc (available on the Mac App Store). • Uses long double calculation (High precision with up to 9 decimal digit precision) • Works great in Portrait and Landscape mode • Works great on iPad as SlideOver FACILITIES: • A calculation area where you can insert algebraic expressions and immediatly see the result as you type • A Variable table where you can insert infinite variables with custom values, Variables can be created as result of calculations (x=1+1) will create automatically the variable x inside the table assigning the value = 2 • A constant table with constant value usable in calculations. Off course constant can't be assigned by calculation • A log with all the result , available step by step or in concise format AVAILABLE FUNCTIONS sqrt cbrt sin cos tan asin acos atan sinh cosh tanh asinh acosh atanh log log10 exp, exp2 expm1 abs ceil floor pow
Amount
Effortlessly convert units with this intuitive and lightweight tool. Get real-time results for over 700 units across 30+ categories displayed simultaneously. Customize your conversion lists and access your history.
- Real-time conversions on one screen
- Over 700 units in 30+ categories
- Customizable unit lists
- Conversion history log
- Search and custom unit creation
- Lightweight and fast interface
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Amount is the most intuitive, lightweight and easy to use unit converter you've ever seen. Amount let you convert units in a way you've never seen before: with just two tap of your finger you have all the results you're looking for in a single display, side by side. When you use Amount you don't have to think what are number is and choose from a long list of values which unit assign to it, spending time. Just let it do all the stuff! FEATURES • Incredibly lightweight, fast and easy to use. • Simple graphic and intuitive interface. • Over 700 units across more than 30 categories. • Real time conversions in one screen. • Create your own customized lists. You can change the order as you like and select just the units you want to see. • View your conversion history log (the history keeps even old exchange rates for currencies). • Search feature to let find the unit you want and instantly convert it. • Custom units can be added easily for each category. Categories Amount can handle: Acceleration, Angles, Area, Clothing (men and women), Cooking, Currency, Data, Density, Electric current, Energy, Flow (mass and volume), Force, Frequency, Fuel Consumption, Illuminance, Length/Distance, Luminance, Metric System, Network speed, Power, Pressure, Radiation, Speed, Temperature, Time, Torque, Typography, Viscosity (dynamic and kinematic), Volume and Weight/Mass. TIPS • Move between screens using swipe gestures. • Long press any category or unit to see more options. • Shake the device to change the sorting of category or units (only on iPhone). • You can change the number directly in the conversion screen by simply tapping it. ADDITIONAL INFO To convert currencies is required an internet connection. Currency and clothing size information are provided only for informational purposes. If you're going to download Amount, please rate and leave a comment! And if you have a suggestion don't hesitate to contact me. With your help I can improve Amount even more!
Screenshots
Verdict
The clearest difference is review sentiment: Amount at 87% against iCalcline's 0%. Amount also leads on rating (3.3 vs 1.0) and monetization model (free vs paid). On price, ads, in-app purchases 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
iCalcline costs $0.99 and Amount $0.59 up front. Neither carries in-app purchases, so what you see is what you pay.
Amount holds the better App Store score, 3.3 against 1.0. That said, the two scores are not equally well evidenced: Amount has 39 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of iCalcline's written reviews are positive against 87% of Amount's.
iCalcline ships an update every 24 months, Amount monthly. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.
| Parameter | iCalcline | Amount |
|---|---|---|
| Price | $0.99 | $0.59 — better |
| Rating | 1.0 (1 ratings) | 3.3 (39 ratings) — better |
| Positive reviews | 0.0% of reviews | 86.7% of reviews — better |
| Number of ratings | 1 | 39 — better |
| Update frequency | Every 24 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Roberto Panetta | Marco Torretta |
Customer experience
iCalcline
Amount
Bugs and requests
iCalcline
Not enough reviews yet to summarise bugs or requests.
Amount
Reported bugs
4 issues- Crashes when editing conversion lists
- Incompatible with older iOS versions
- Incorrect unit conversions (e.g. milli- vs centi-)
- Currency conversion rates not updating properly
Requested features
5 requests- Add more common units (e.g. stones, bushels)
- Improve currency conversion accuracy and update frequency
- Implement landscape mode and iPad optimization
- Add a widget and Apple Watch support
- Improve unit organization and search functionality
In-app purchases
iCalcline
No in-app purchases
Amount
No in-app purchases









