Comparison

▸ Calculator + vs Document Wallet

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

Head to head
About

▸ Calculator +

This app offers a comprehensive suite of 12 calculators, including scientific, currency, unit, and finance functions. It features advanced modes, extensive formula support, and a user-friendly interface for all calculation needs.

Highlights
  • 12 specialized calculators
  • Over 800 formulas
  • Scientific, RPN, and String modes
  • Unit and currency conversion
  • Finance and date/time calculations
  • Equation solver and graphing
  • History and expression export
Features
Read full description

+ 800+ formulas in Formula Toolkit In-App + OVER 1 MILLION DOWNLOADS WORLDWIDE + Award Winning Calculator Since 2007 HiCalc Pro is an ultimate calculator and will make all your calculations become simpler than ever with 12 calculators: Basic, Scientific, Currency Converter, Unit Converter, Finance, Date - Time, Constants, Equation Solver, Statistics, Base conversion, Graph & Tip calculator. ► Noteworthy • Three calculating modes: STANDARD, STRING and RPN • Precision to 31 digits • BIG CALC in Portrait mode. • Comprehensive Date & Time calculator • Unit Converter contains 3,300 units in 113 categories • Currency converter with daily online update for 152 currencies • Extended Memory and Expression History supports • Intuitive interface • Export & send out expressions/history ► Features: • Multi-line LED with smart input for entering complicated expressions • Show expression as normal writing mode @ very useful for students • Advanced RPN mode with Stack viewer and functions: DROP, SWAP, ROLL, DEPTH, PICK, OVER, KEEP, LAST, CLEAR • Sending data from Ext-Memory & History list • Support 5 languages (English, French, German, Chinese & Vietnamese) ► Scientific calculator: • Basic fx: sin, cos, tan, sin-1, cos-1, tan-1, sinh, cosh, tanh, log, ln, sinh-1, cosh-1, tanh-1 … • Advanced fx: Random, nPr, nCr, Differential function, Evaluation function, Integration function, Root-Finder and Product function, Greatest Common Divisor, Least Common Multiple, Fibonacci function … • Complex numbers in STRING mode ► Unit Converter: a powerful and easy-to-use tool for converting over 3,300 units in 113 categories. • Special categories: Women and Girl's Clothing, Cooking, Electric Field, Density Traditional, Typography, UHF channel and frequency chart, Fuel Consumption … • Full text search for categories and units • Favorite & Recently used units • Update over the air ► Statistics calculator • 15 common functions: Σ(x), mean of X, AVD, SSD, SDV, C(n, k), Min, Max, GM... • 6 probability distribution functions: Binomial, Gamma, Gaussian, Geometric, Poisson, Rayleigh • Smart data input: data import from clipboard supported ► Graphing Calculator • Up to three graphs • Coordinate system movable • Zoom in/out ► Equation solver • Polynomial Equations (1st-4th) • N-simultaneous equations ► Base conversion • Full-featured base conversion ► Date & Time calculator • Date / Time difference: calculate duration between two dates. • Add/ Subtract: Add or subtract days, months and years of a given date to get a new date. • Events Countdown/up: Shows Time Remaining and Elapsed Time ► World Clock • Show date & time of any city in the World • Have 6 cool skins ► Finance calculator • Time Value of Money (NPER, RATE, PV, FV, PMT) • Mortgage & Loan Calculator • Finance functions: SLN, SYD, DB, NPV, IRR, NPER, RATE, PV, FV, PMT. ► Constants Library: • 1500 constants from Mathematics, Physics, Solar System and Element e.g: Avogadro number, Gravitational const, Stefan-Boltzmann Const, Speed of Light.

About

Document Wallet

Features
Read full description

Smart OCR reader and classification. PDF converter for multi-pages document. Travel journey management features. Family management features. Profile-based organization features. Reminder for creating, gathering or renewal document.

Screenshots

▸ Calculator +4 screens
Document Wallet4 screens

Verdict

The call

The clearest difference is price: Document Wallet at Free against ▸ Calculator +'s $1.99. Document Wallet also leads on in-app purchases (none vs 4) and update cadence (every 10 days vs every 6 weeks). ▸ Calculator +'s advantage is iOS requirement (8.0 vs 15.5). On ads 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

Document Wallet is free to download; ▸ Calculator + costs $1.99 up front. ▸ Calculator + sells 4 one-off in-app purchases. Document Wallet asks for nothing beyond the download.

UpkeepUpdate frequency

▸ Calculator + ships an update every 6 weeks, Document Wallet every 10 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
▸ Calculator + versus Document Wallet: the parameters behind the verdict, then further details
Parameter▸ Calculator +Document Wallet
Price$1.99Free — better
Rating4.7 (904 ratings) — better—
Positive reviews75.1% of reviews—
Number of ratings904 — better—
Update frequencyEvery 6 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.5
Further details — not scored
Size44 MB106 MB
Age rating4+4+
DeveloperPPCLINK SoftwareHoai Linh Nguyen

Bugs and requests

▸ Calculator +

Reported bugs

5 issues
  • Date/Time screen cutoff at bottom and missing keyboard icon
  • Currency exchange not working
  • Periodic Taple option of HiCalcac pro is not compatible eith iOs 10
  • Crashes in iOS 10
  • Gig to meg conversion is incorrect

Requested features

5 requests
  • Dark mode option
  • Advanced analytics dashboard
  • Landscape mode support
  • Equation solver for non-polynomials
  • Auto-display of graph coordinates

Document Wallet

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

▸ Calculator +

One-time4
  • Formula Toolkit$0.99
  • Periodic Table$0.99
  • UI Upgrade$0.99
Show 1 more
  • Biorhythm$0.99
None

Document Wallet

No in-app purchases

Questions

Is ▸ Calculator + free?
▸ Calculator + costs $1.99, and also offers in-app purchases.
Is Document Wallet free?
Document Wallet is free to download, with no in-app purchases.
Do ▸ Calculator + or Document Wallet have ads?
Neither ▸ Calculator + nor Document Wallet shows ads.
Which is updated more often, ▸ Calculator + or Document Wallet?
▸ Calculator + ships an update every 6 weeks, and Document Wallet every 10 days. Most recently, ▸ Calculator + was updated on October 13, 2026 and Document Wallet on September 30, 2026.

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