Comparison

FastCalc vs CSVToXLSX Converter

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

Head to head
About

FastCalc

This calculator app offers a streamlined experience with large, easy-to-use keys and an innovative gesture-based interface. It displays your ongoing expression and results in real-time, eliminating the need for an equals button. Advanced features include percentage calculations and customizable constants.

Highlights
  • Large, practical keys
  • Permanent expression display
  • Automatic real-time results
  • Gesture-based input
  • Customizable constants
  • Advanced percentage mode
Read full description

FastCalc is a calculator recognized for its efficiency and ease of use. It stands out thanks to: • its large keys, which allow for fast and accurate input, • the permanent display of the expression entered by the user, • the automatic display of the result while typing: no “=” key required! FastCalc is thus suitable both for everyday calculations and for more advanced use. BASICS OF USE The interface of FastCalc is innovative and minimalist, entirely based on simple gestures: • Select a side symbol on a key: slide your finger in its direction. • Delete the last entered elements: make a small swipe to the left on the display. • Clear the entire expression: swipe quickly to the left across the whole display. • Store a result in a memory: tap the result and choose the desired memory. FEATURES • Large, practical, and easy-to-read keys. • Customizable constants. • Advanced mode for percentage calculations. • Permanent display of the current expression and temporary memories. • Automatic storage of the previous result (ANS) each time an expression is cleared. • Integrated help videos and user guide (in ⓘ). SETTINGS • Enable interface sounds and adjust their volume. • Enable advanced mode. • Choose the number of displayed decimals and the thousands separators. • Customize the colors of the keypad and the expression.

About

CSVToXLSX Converter

Convert CSV files to XLSX and vice versa with this offline tool. It offers batch processing, instant previews, and easy sharing, all while ensuring data security through local processing. Ideal for professionals, students, and researchers needing efficient file format conversion.

Highlights
  • CSV to XLSX conversion
  • XLSX to CSV conversion
  • Batch file processing
  • Instant file preview
  • Easy file sharing
  • Offline operation
  • Local data processing
Features
Read full description

A professional CSV and XLSX file format conversion tool that provides simple and quick spreadsheet file conversion solutions. Key Features: • CSV to XLSX: Easily convert CSV files to Excel-compatible XLSX format • XLSX to CSV: Quickly convert Excel files to universal CSV format • Batch Processing: Support for large file conversion • Instant Preview: Preview converted files immediately • Easy Sharing: Quick sharing and export of converted files Advantages: • Clean Interface: Clear and intuitive operation interface with zero learning curve • Fast Conversion: Efficient conversion engine saves your valuable time • Local Processing: All conversions are performed locally to protect your data security • Perfect Compatibility: Supports iPhone and iPad devices • No Internet Required: Use offline, convert files anywhere, anytime Perfect For: • Office data processing • Academic research data organization • Data format conversion for analysis • Cross-platform data exchange • Business report processing Whether you're a business professional, student, researcher, or data analyst, this app meets all your file format conversion needs. Complete conversions in just a few steps and make your work more efficient! Use Cases: • Business professionals handling data files • Students working with research data • Researchers organizing datasets • Data analysts preparing data • Anyone needing to convert between CSV and XLSX formats Key Benefits: • Save time with quick conversions • Maintain data integrity • Simple and user-friendly interface • Secure local processing • Professional-grade results Download now and say goodbye to complicated file format conversion hassles! Note: This app processes all conversions locally on your device, ensuring your data privacy and security.

Screenshots

FastCalc4 screens
CSVToXLSX Converter3 screens

Verdict

The call

The clearest difference is review sentiment: FastCalc at 80% against CSVToXLSX Converter's 0%. CSVToXLSX Converter's advantage is in-app purchases (none vs 4) and price ($0.99 vs $1.99). On update cadence, ads, monetization model 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

FastCalc costs $1.99 and CSVToXLSX Converter $0.99 up front. FastCalc sells 4 one-off in-app purchases. CSVToXLSX Converter asks for nothing beyond the download.

UpkeepUpdate frequency

FastCalc ships an update every 5 months, CSVToXLSX Converter every 9 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
FastCalc versus CSVToXLSX Converter: the parameters behind the verdict, then further details
ParameterFastCalcCSVToXLSX Converter
Price$1.99$0.99 — better
Rating4.8 (4 ratings) — better—
Positive reviews80.0% of reviews — better0.0% of reviews
Number of ratings4 — better—
Update frequencyEvery 5 months — betterEvery 9 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.014.0 — better
Further details — not scored
Size8 MB3 MB
Age rating4+4+
DeveloperAndre Ponzo云峰 林

Customer experience

FastCalc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

CSVToXLSX Converter

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

4 purchases

FastCalc

One-time4
  • Red Rivella$1.99
  • Homemade hot chocolate$6.99
  • Bircher muesli$12.99
Show 1 more
  • Moitié-moitié fondue$34.99
None

CSVToXLSX Converter

No in-app purchases

Questions

Is FastCalc free?
FastCalc costs $1.99, and also offers in-app purchases.
Is CSVToXLSX Converter free?
CSVToXLSX Converter costs $0.99, with no in-app purchases.
Do FastCalc or CSVToXLSX Converter have ads?
Neither FastCalc nor CSVToXLSX Converter shows ads.
Which is updated more often, FastCalc or CSVToXLSX Converter?
FastCalc ships an update every 5 months, and CSVToXLSX Converter every 9 months. Most recently, FastCalc was updated on October 7, 2026 and CSVToXLSX Converter on October 1, 2026.

Other comparisons