iCalcline vs iA Presenter
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
iA Presenter
Create presentations quickly by focusing on your content, not design. Write your script in Markdown and let responsive templates handle the visual layout, making it easy to build, rehearse, and present polished decks on any device.
- Write first, design later with Markdown
- Responsive layouts for all devices
- Fast and focused presentation building
- Portable presentations on iPhone, iPad, Mac
- Ideal for pitches, meetings, and teaching
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Stop moving boxes around. Focus on what you want to say. Make a slide deck as fast writing an email. In class, on stage, at the office. On iPhone and iPad. iA Presenter is the only professional presentation app designed to work natively on your iPhone. “I’ve cut my preparation time in half.” – John Holland, professor “Importing a markdown file and turning it into slides is a game changer.” – Michael d’Offay, teacher “The app truly helped me focus on the script and forget about the slides” – Selçuk Balamir, educator and designer Traditional presentation tools slow you down. You drag boxes, pick fonts, adjust colors, and end up with cluttered slides. iA Presenter flips the workflow: start with your story, structure it in Markdown, and let our responsive, typographic templates handle the design. - Write first, design later: Start from text, not slides - Beautiful everywhere: Responsive layouts scale seamlessly from iPhone to iPad to Mac to projector - Fast and focused: Build, rehearse, and present a polished deck in under 20 minutes - Portable presentations: Create and present wherever you need to work, on desktop, tablet, or phone Perfect for pitches, meetings, workshops, and teaching. Build, rehearse, and present a polished deck in under 20 minutes on your Mac at the desk, iPad on the go, or iPhone in your hand. Try iA Presenter and Web Sharing free for 7 days. Trials end automatically without a charge. A monthly or yearly subscription, available through in-app purchase, is required to continue after the trial. iA Presenter subscriptions include Web Sharing, which is also available as a separate subscription. Subscriptions renew automatically unless cancelled. Terms and Conditions: https://ia.net/legal/account/ Privacy Policy: https://ia.net/legal/privacy/
Screenshots
Verdict
The clearest difference is review sentiment: iA Presenter at 88% against iCalcline's 0%. iA Presenter also leads on price (Free vs $0.99) and rating (4.9 vs 1.0). iCalcline's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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
iA Presenter is free to download; iCalcline costs $0.99 up front. iA Presenter sells 4 in-app purchases, starting at $7.99 per month. iCalcline asks for nothing beyond the download.
iA Presenter holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: iA Presenter has 11 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 88% of iA Presenter's.
iCalcline ships an update every 24 months, iA Presenter every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | iCalcline | iA Presenter |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.9 (11 ratings) — better |
| Positive reviews | 0.0% of reviews | 87.5% of reviews — better |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 24 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Roberto Panetta | Information Architects AG |
Customer experience
iCalcline
iA Presenter
In-app purchases
iCalcline
No in-app purchases
iA Presenter
- Monthly$7.991 Month
- Web Sharing 1GB Yearly$9.991 Year
- Web Sharing 10GB Yearly$19.991 Year
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- Yearly$39.991 Year







