Comparison

Blue Calculator+ vs Instacalc.com

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

Head to head
About

Blue Calculator+

A straightforward and lightweight calculator app offering essential functions like random number generation, exponents, roots, and logarithms. It also serves as a companion for Apple Watch users, providing convenient access to calculations on their wrist.

Highlights
  • Random number generator
  • Exponentials and exponents
  • Squares, cubes, and square roots
  • Logarithmic functions
  • Apple Watch companion app
Features
Read full description

Blue Calculator+ is a basic calculator with functionality often desired in a fast, easy-to-use and lightweight app, as well as a companion app for Apple Watch owners. Features include: - Random number generator - Exponentials - Exponents - Squares, cubes, and squareroots - Logarithmic functions - and more

About

Instacalc.com

This app bridges the gap between simple calculators and complex spreadsheets. It allows for natural language input, variables, and advanced functions, making calculations quick and easy to check. Share your calculations via a permalink.

Highlights
  • Natural language calculations
  • Variable and row support
  • Excel-style functions
  • Unit and currency conversions
  • Scientific and programming commands
  • Shareable calculation permalinks
Features
Read full description

Is a pocket calc too simple? Excel too much? Enter instacalc, the calc/spreadsheet sweet spot. Here's what users have to say: “I bleepin' love this site and I use it all the time. I especially love the simple variables and conversions.” “For quick ad-hoc calculations I like instacalc.com because: It's quick to write. It's free. It's less prone to mistakes and easier to check than Excel.” “An astonishing mixture between a simple calculator and a spreadsheet application.” Instacalc lets you... * Crunch numbers while seeing results in real-time * Use natural language (250k + 25%) * Use variables (profit = sales - cost) * Use excel-style functions (SUM, AVG, PMT...) * Use scientific and programming commands (trig, hex/bin, logical operators, if/else...) * Share a calc permalink with anyone (no login) * Use units (meters/feet, etc.) and currency, along with custom units * Dozens of more features (see below) If you login (free), the app syncs with the main instacalc.com website. Welcome to your new, favorite calculator. --- Here's a few more details on features: - Flexible Arithmetic: Easily manage calculations from "2 + 2 - 3" to complex expressions like "(3 * 5) / 2". - Instant Roots and Powers: Compute roots and powers in a snap, from "sqrt(9)" for square roots to "5^2" for exponents. - Master Percentages: Effortlessly calculate percentages, whether it's "5%", finding "17% of 200", or calculating "20 + 50%". - Modulo Operations: Solve "5 mod 3" quickly, perfect for programming and mathematical proofs. - Number Shortcuts: Speed through large numbers with shortcuts like "3.3k" or "200 million". - Scientific Notation Made Simple: Work with large values using entries like "1.234e3" or as simple as "1e-3". - Dynamic Variables & Rows: Create and manipulate variables "x = 9", and perform calculations across rows to streamline data analysis. - Comprehensive Unit Conversions: Convert "15 feet into inches" or complex rates like "15 miles/hour into feet/second". - Time and Date Wizardry: Calculate durations like "3 days in minutes" or perform timezone conversions "8pm PST in EST". - Advanced Financial Calculations: From loan payments using "PMT(rate, nper, pv)" to calculating the internal rate of return with "IRR(values)". - Statistical Tools: Analyze data using functions for variance "var(r1:r3)" or standard deviation "stddev(r1:r3)". - Trigonometry and Logarithms on the Go: Solve "sin(30)" or "log(2)" for both educational and professional uses. - Programming Made Easy: Tackle binary operations "bin(a = 3) and bin(a and b)", logical comparisons "2 * 2 > 3", and conditional statements. - Real-Time Financial Insights: Convert currencies "15 USD in EUR" and check real-time stock prices with "STOCK(AAPL)". Use Instacalc today and transform the way you handle calculations, whether for work, study, or daily life!

Screenshots

Blue Calculator+2 screens
Instacalc.com4 screens

Verdict

The call

The clearest difference is ratings volume: Instacalc.com at 4 against Blue Calculator+'s 1. Blue Calculator+'s advantage is device support (4 vs 2) and iOS requirement (10.0 vs 16.4). On price, rating, review sentiment and update cadence 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

On the App Store both sit at effectively the same score — 5.0 for Blue Calculator+ against 5.0 for Instacalc.com. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Blue Calculator+ ships an update every 10 days, Instacalc.com every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Blue Calculator+ versus Instacalc.com: the parameters behind the verdict, then further details
ParameterBlue Calculator+Instacalc.com
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS10.0 — better16.4
Further details — not scored
Size26 MB3 MB
Age rating4+4+
DeveloperBryan StoneKalid Azad

Customer experience

Blue Calculator+

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

Instacalc.com

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Blue Calculator+

No in-app purchases

None

Instacalc.com

No in-app purchases

Questions

Is Blue Calculator+ free?
Blue Calculator+ is free to download, with no in-app purchases.
Is Instacalc.com free?
Instacalc.com is free to download, with no in-app purchases.
Which has better reviews, Blue Calculator+ or Instacalc.com?
Blue Calculator+ and Instacalc.com are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do Blue Calculator+ or Instacalc.com have ads?
Neither Blue Calculator+ nor Instacalc.com shows ads.
Which is updated more often, Blue Calculator+ or Instacalc.com?
Blue Calculator+ ships an update every 10 days, and Instacalc.com every 2 weeks. Most recently, Blue Calculator+ was updated on November 3, 2026 and Instacalc.com on November 4, 2026.

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