Comparison

Smart vs Summa

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

Head to head
About

Smart

This utility app offers a comprehensive suite of calculators for everyday financial, health, and date-related needs. It includes tools for loans, investments, taxes, health metrics, and unit conversions, along with a math solver.

Highlights
  • Basic & Scientific Calculations
  • Loan & Investment Calculators
  • Health & Date Calculators
  • Unit & Currency Converters
  • GST/Sales Tax/VAT Calculator
  • Math Solver
  • History & Number to Word Conversion
Features
Read full description

Calculators Basic & Scientific calculator  GST/Sales Tax/VAT calculator  Loan calculator: EMI, Compare Loan, Loan Affordability, Loan Amortization  Investment calculator: FD, RD, ROI, SIP, CAGR  Percentage calculator, Markup & Margin, Profit & Loss  Unit Price calculator : Find cheapest price  Health Calculator: BMI, BMR, Body Fat % & Daily Calories burn, Ideal Weight  Date Calculator: Age, Duration, ± Date, Days Counter, Time-sheet, Working Days Discount calculator  Tip calculator  Math solver  Converters Unit converter  Currency converter  Key Features General & Scientific Calculator - Facilitates instant & accurate calculations from simple to complex - Store value for later using memory keys - Track your calculations with History. Write a short note for important calculations - Undo result, quick copy & share - Number to Word conversion - Extra functions on long-press Unit Converter - Simple, smart & elegant tool with more than 200 unit converters that are used in daily life - Supported conversion categories:- Length & Distance, Weight, Area, Volume, Temperature, Cooking, Number Base, Digital Storage, Number Conversion, Data Transfer, Time, Speed, Force, Power, Fuel, Energy, Angle, Density, Acceleration, Frequency, Torque. Currency converter - Foreign exchange rates of 170 countries currency - Available offline GST /Sales Tax/VAT Calculator -Include(+) or Exclude(-) Tax from given amount with single tap. - 5 Pre-provided tax rates can be customized as per your country rates. Interest Calculator -Calculate interest & maturity amount on your saving through Simple Interest, Compound Interest, RD, SIP & Doubling Time. -Check your investment opportunities through ROI Percentage Calculator -Simple percentage, % increase/decrease, % change, what %, fraction to % -Calculate Markup percentage, Margin percentage & total profit based on cost & selling price Health Calculator - BMI, BMR, Body Fat %, Daily Water Intake based on your age, gender, height & weight. Calculate daily calorie requirement as per selected activity level. - Track your weight to improve your BMI and overall health. Date Calculator -Age calculator & Birthday tracking -Duration between two dates/times -Add/Subtract duration to date & calculate final date & time. -Days/Hours Countdown. Never miss your important events Equation Solver - Linear equations with one,two & three variables - Quadratic equation Loan Calculator -Calculate your EMI, total interest & final amount with amortization chart in a easiest way. -Compare two loans to know which one is better for you. -Calculate how much loan you can afford based on your max monthly EMI. Discount Calculator -Calculate or confirm discounts quickly on original price. -Find out how much you save for an item. Tip Calculator -Calculate the tip percentage or tip amount & split the bill among number of persons on table. -Save time when you use the bill splitter, and tip exactly what you mean to, no more, no less. Unit Price Calculator -Compare prices of two or more products having different quantities of same unit & buy cheapest price item.

About

Summa

A clean, fast, and beautifully designed calculator for everyday math, scientific calculations, and quick conversions. Features live preview, history, favorites, and smart gestures for effortless and accurate calculations.

Highlights
  • Live preview of results
  • History and Favorites for calculations
  • Scientific functions (exponents, roots, trig)
  • Built-in unit and currency converter
  • Smart gestures for interaction
  • Multiple themes and icon options
Features
Read full description

Summa - Precision Made Simple is a clean, fast, and beautifully designed calculator for iPhone and iPad. Built for everyday math, scientific calculations, quick conversions, and everything in between, Summa makes calculating effortless, accurate, and genuinely enjoyable. With live preview, a fast history bar, and natural gestures, Summa helps you move quickly without losing context. Results appear as you type, past calculations stay within reach, and Favorites make it easy to save the numbers you return to most. Powerful features, simply presented: - Live preview - see results instantly as you type - History and Favorites - revisit, reuse, and save important calculations - Exponents and roots - x^2, x^y, square root, and y-th root - Trigonometry - sin, cos, tan, and inverse arc functions - Degree and radian support - easily switch between DEG and RAD - Mathematical constants - π and e - Logarithmic functions - ln for natural logarithms - Smart gestures - swipe, tap, and interact naturally A calculator with a capable converter: Summa includes built-in conversions for money, temperature, length, weight, volume, energy, area, and data size. Convert currencies by name or country, work with fiat and crypto rates, or quickly switch between everyday units without leaving the app. For market data, Summa offers flexible refresh behavior with adjustable fiat and crypto cache timing. Relay mode can route fiat and crypto market refreshes through Studio Elytra15’s cache for a more private path. Designed to feel personal: - Multiple themes, including light, dark, and crafted color themes - Alternate Home Screen icons - A calm, polished interface for iPhone and iPad - Completely free - no ads, no in-app purchases, and no tracking Whether you’re at home, at work, in class, or on the go, Summa is your reliable, elegant calculator companion. Precise math, beautifully simple.

Screenshots

Smart4 screens
Summa4 screens

Verdict

The call

The clearest difference is review sentiment: Summa at 100% against Smart's 0%. Summa also leads on rating (5.0 vs 3.0) and ads (none vs shown). Smart's advantage is iOS requirement (14.1 vs 17.0). On price, ratings volume, update cadence and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Summa holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of Smart's written reviews are positive against 100% of Summa's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Smart versus Summa: the parameters behind the verdict, then further details
ParameterSmartSumma
PriceFreeFree
Rating3.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 5 weeksEvery 5 weeks
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.1 — better17.0
Further details — not scored
Size49 MB24 MB
Age rating17+4+
DeveloperShreyaskumar PatelVille Scholin

Customer experience

Smart

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews5 reviews
Positive0.0%
Neutral20.0%
Negative80.0%

Summa

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Smart

No in-app purchases

None

Summa

No in-app purchases

Questions

Is Smart free?
Smart is free to download, with no in-app purchases.
Is Summa free?
Summa is free to download, with no in-app purchases.
Which has better reviews, Smart or Summa?
Summa is rated higher. Smart averages 3.0 out of 5 from 1 ratings, while Summa averages 5.0 from 1 ratings.
Do Smart or Summa have ads?
Smart shows ads; Summa does not.
Which is updated more often, Smart or Summa?
Smart ships an update every 5 weeks, and Summa every 5 weeks. Most recently, Smart was updated on November 3, 2026 and Summa on November 5, 2026.

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