Comparison

Instacalc.com vs Ocrivo

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

Head to head
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!

About

Ocrivo

Features
Read full description

Ocrivo is a powerful intelligent document recognition app that uses advanced AI technology to help you quickly and accurately extract document content. Key Features: Multiple Format Support • Support PDF document recognition • Support JPG, PNG and other image formats • Instant photo recognition High Accuracy • Powered by Zhipu AI's glm-ocr model • High-precision text extraction • Preserve original document formatting Business Efficiency • Quickly digitize contracts • Automatic invoice and receipt recognition • Easy meeting note organization Multilingual Interface • Support for 27 interface languages • Covering major global languages Privacy & Security • Encrypted data transmission • Support custom API Key • Local storage for privacy protection Use Cases: • Business professionals handling contracts and invoices • Students organizing notes and materials • Researchers analyzing literature • Anyone who needs to digitize paper documents Download Ocrivo and make document processing simple and efficient!

Screenshots

Instacalc.com4 screens
Ocrivo4 screens

Verdict

The call

The clearest difference is price: Instacalc.com at Free against Ocrivo's $5.99. On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Instacalc.com is free to download; Ocrivo costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level
Instacalc.com versus Ocrivo: the parameters behind the verdict, then further details
ParameterInstacalc.comOcrivo
PriceFree — better$5.99
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size3 MB49 MB
Age rating4+4+
DeveloperKalid Azad军军 张

In-app purchases

None

Instacalc.com

No in-app purchases

None

Ocrivo

No in-app purchases

Questions

Is Instacalc.com free?
Instacalc.com is free to download, with no in-app purchases.
Is Ocrivo free?
Ocrivo costs $5.99, with no in-app purchases.
Do Instacalc.com or Ocrivo have ads?
Neither Instacalc.com nor Ocrivo shows ads.
Which is updated more often, Instacalc.com or Ocrivo?
Instacalc.com ships an update every 2 weeks, and Ocrivo every 2 weeks. Most recently, Instacalc.com was updated on November 4, 2026 and Ocrivo on October 25, 2026.

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