Comparison

Sci vs Solves

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

Head to head
About

Sci

This app offers a versatile calculator with three distinct modes: Basic, Scientific, and Programmer. It provides a history view, sharing capabilities, and supports various input and output formats. The app is designed for iPhone, iPad, and iPod Touch.

Highlights
  • Multi-mode calculator (Basic, Scientific, Programmer)
  • Calculation history
  • Share results via email
  • Copy & paste values
  • Configurable display precision
  • Retina graphics
Features
Read full description

Sci:Pro Calculator is a simple multi-mode calculator for your iPhone, iPad, and iPod Touch (Universal App). The app features three modes of operation: Basic, Scientific, and Programmer. Each mode features an easy-to-access history view and support for sharing results using e-mail or by copying & pasting values to and from other applications. This is our first app for the App Store and we’re making the first version free for everyone to use without ads. If you like the app please take a moment to rate it for us. if you encounter any bugs or problems while using it please let us know and we’ll do our best to fix them as quickly as possible. App Features: • No Ads! • Multi-mode Calculator (Basic, Scientific, Programmer) • Calculation History (Swipe up/down to access) • Full screen key layouts (in all orientations) • Multiple Copy & Paste Formats • Share Results via Email (Plain Text, HTML) • Memory Keys (M+,M-,MC,MR) • Configurable Display Precision (2 to 15 digits) • User Interface Sounds (Configurable: on/off) • Retina graphics (Optimized for all devices) Basic Mode: • High-Precision Floating Point (2-15 digits display precision) • Selectable Display Formats (Standard, Scientific, Engineering) • Basic Math Functions (+, -, ×, ÷) • Percent Key/Mode (Single value or Expression-based) • Parentheses Keys (Expression Grouping/Nesting—iPad Only) Scientific Mode: • High-Precision Floating Point (2-15 digits display precision) • Selectable Display Formats (Standard, Scientific, Engineering) • Basic Math Functions (+, -, ×, ÷, modulo) • Percent Key/Mode (Single value or Expression-based) • Parentheses Keys (Expression Grouping/Nesting) • Trigonometric Functions (Normal, Inverse, and Hyperbolic) • Selectable Trig. Mode (Degrees, Radians) • Exponent Functions (2^x, 10^x, x^y, x², x³ e^x) • Root Functions (√, ³√, x√y) • Logarithmic Functions (Log2, Log10, Ln) • Other Functions (random, Exponent, Factorial, 1/x) • Numerical Constants (π, e) Programmer Mode: • 64 bit Integer Values • Radix Modes & Conversion (Binary, Decimal, Hexadecimal, Octal) • Integer Math Functions (+, -, ×, ÷, MOD) • Bitwise Operators (AND, OR, NOR, XOR) • Bit Shift and Rotate (Single & Multiple bit) • Signed Number Operations (1’s & 2's Complement) • Byte-Flip, Word-Flip • Bit Count • Random Integer • Parentheses Keys (Expression Grouping/Nesting) • Full-time Binary View (iPad Only) • Encoding Views (ASCII, Unicode, RGB) • Multiple Copy Formats (Binary, Hex, Decimal, ASCII, Unicode, RGB value) • Multiple Paste Formats (Decimal, Hex, Octal, and Binary values)

About

Solves

A powerful and versatile calculator for all your Apple devices. Edit complex expressions, sync history across devices, and enjoy a clean, ad-free experience. Unlock advanced features like unit conversion and fraction support with an optional upgrade.

Highlights
  • Edit expressions without limitations
  • Instant results
  • Sync calculation history across devices
  • Unit conversion (currencies, physical units)
  • Fraction support
  • Customizable themes
Features
Read full description

Solves is a well-made calculator app for your iPhone, iPad, Mac, and Apple Watch. It allows you to edit expressions without limitations and get instant results. It keeps your calculation history in sync on all devices and lets you to easily interact with it. All this for free and without ads! By purchasing Solves+ you also get: • Unit Conversions: currencies (with crypto, metals & energy), physical units, and your own! • History Tools: comment, bookmark, export, auto clear, and more • Fractions • More Themes • Advanced Settings Hand-typed code. No generative AI was used during the development or by the app itself. Solves+ requires one payment only. You will own it forever on all devices.

Screenshots

Sci4 screens
Solves4 screens

Verdict

The call

The clearest difference is in-app purchases: Sci at none against Solves's 6. Sci also leads on ratings volume (3.6K vs 382) and iOS requirement (9.3 vs 15). Solves's advantage is update cadence (every 3 weeks vs every 2 months) and device support (5 vs 3). On price, rating, review sentiment and ads 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. Solves sells 6 one-off in-app purchases. Sci asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Sci against 4.9 for Solves. That said, the two scores are not equally well evidenced: Sci has 3.6K ratings behind it against 382, so its average is the more settled of the two. Written reviews are what separate them: 93% of Sci's written reviews are positive against 91% of Solves's.

UpkeepUpdate frequency

Sci ships an update every 2 months, Solves every 3 weeks. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Sci versus Solves: the parameters behind the verdict, then further details
ParameterSciSolves
PriceFreeFree
Rating4.8 (3.6K ratings)4.9 (382 ratings) — better
Positive reviews93.1% of reviews — better90.6% of reviews
Number of ratings3.6K — better382
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS9.3 — better15
Further details — not scored
Size70 MB82 MB
Age rating4+4+
DeveloperJerry MontgomeryOleg Barinov

Customer experience

Sci

All ratings3,603 ratings
Positive95.9%
Neutral2.3%
Negative1.8%
Written reviews204 reviews
Positive93.1%
Neutral3.9%
Negative2.9%

Solves

All ratings382 ratings
Positive97.1%
Neutral1.0%
Negative1.8%
Written reviews480 reviews
Positive90.6%
Neutral3.8%
Negative5.6%

User reviews

Sci

From 3.6K App Store ratings

What we love

  • 🚀 Fast and responsive
  • 👍 Clean and intuitive interface
  • 🔒 No ads or in-app purchases
  • 💡 Versatile with basic, scientific, and programming modes
  • 👍 Useful for a variety of calculations

Room to improve

  • 🐛 Occasional bugs or glitches
  • 🔍 Lack of split-screen support on iPad
  • 🔍 Limited keyboard input support
  • 🔍 Inconsistent behavior when switching between modes

Solves

From 382 App Store ratings

What we love

  • 👍 Excellent calculator app
  • 🚀 Smooth and responsive
  • 🔒 No ads or data collection
  • 💡 Useful features like history, comments, and unit conversions
  • 👍 Clean and intuitive design

Room to improve

  • 🐛 Occasional crashes or bugs after updates
  • 🐛 Issues with certain mathematical operations
  • 🐛 Family sharing not working properly
  • 🐛 Lag or performance issues on some devices
  • 💡 Desire for more advanced features like fractions, base conversions

Bugs and requests

Sci

Reported bugs

3 issues
  • Incorrect calculations for certain sequences of operations
  • Memory issues when dealing with large numbers or exponents
  • Compatibility problems with newer iOS versions

Requested features

4 requests
  • Ability to configure number of digits displayed
  • Option to change display colors or themes
  • Support for more advanced programming features
  • Integration with other apps or services

Solves

Reported bugs

4 issues
  • Crashes when pressing certain buttons
  • Issues with parsing complex expressions
  • Incorrect results for some calculations
  • Problems with history clearing or syncing

Requested features

6 requests
  • Add support for fractions and mixed numbers
  • Implement a widget for quick access
  • Allow resizing the app window on Mac
  • Provide more customization options
  • Add support for Apple Watch
Show 1 more
  • Improve unit conversion experience

In-app purchases

None

Sci

No in-app purchases

6 purchases

Solves

One-time6
  • Tip Option #1$0.99
  • Tip Option #2$1.99
  • Tip Option #3$4.99
Show 3 more
  • Tip Option #4$9.99
  • Solves+$9.99
  • Tip Option #5$19.99

Questions

Is Sci free?
Sci is free to download, with no in-app purchases.
Is Solves free?
Solves is free to download, with in-app purchases available.
Which has better reviews, Sci or Solves?
Solves is rated higher. Sci averages 4.8 out of 5 from 3.6K ratings, while Solves averages 4.9 from 382 ratings.
Do Sci or Solves have ads?
Neither Sci nor Solves shows ads.
Which is updated more often, Sci or Solves?
Sci ships an update every 2 months, and Solves every 3 weeks. Most recently, Sci was updated on October 19, 2026 and Solves on October 15, 2026.

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