Comparison

ThetaCalc vs PyCalc

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

Head to head
About

ThetaCalc

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

Highlights
  • Reverse Polish Notation (RPN) calculator
  • User-programmable functions
  • JavaScript equation support
  • Extensible functionality
Features
Read full description

ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.

About

PyCalc

This app offers a revolutionary approach to mobile calculations, allowing users to view and edit entire equations at once. It leverages the power of Python 3.11.1 for advanced functions, symbolic math, and financial analysis, making complex computations accessible on the go.

Highlights
  • Real-time editable calculation view
  • Python 3.11.1 interpreter
  • Programmable scientific calculator
  • Support for matrices and fractions
  • Built-in Python packages (math, sympy)
  • Financial analysis functions
  • Symbolic math capabilities
Features
Read full description

What most people love first about PyCalc is that they can see and edit their entire calculation all at once. It's a simple idea but it makes a huge difference in the kinds of calculations people end up doing on mobile. But that just scratches the surface of PyCalc's features and capabilities. The more you learn, the more you'll see how easy it is to do calculations that were always too hard before on mobile. Jump in and learn a truly better way of calculating. Basic features: ● A new and better approach to mobile calculation ● A cleaner interface for complicated calculations than traditional calculators ● Calculate by voice ● A history list keeps track of your previous calculations ● Functions built in for a huge range of applications ● Multiple keyboards optimized for different use cases Advanced features: ● Based on the Python® language, with access to the power of a full Python 3.11.1 interpreter ● Programmable scientific calculator: An editable startup.py script allows you to define your own functions for easy access later ● Streamlined support for matrices and fractions ● Many standard Python packages, such as: math, statistics, random, sympy, mpmath, fractions, decimal and datetime ● Basic financial analysis functions: pv(), fv(), npv(), pmt(), etc. ● Built-in support for complex numbers ● Symbolic math via the sympy package ● http/https queries via requests package ● Much, much more... "Python" and the Python Logo are trademarks or registered trademarks of the Python Software Foundation, used by the PyCalc project with permission from the Foundation.

Screenshots

ThetaCalc4 screens
PyCalc4 screens

Verdict

The call

The clearest difference is rating: PyCalc at 5.0 against ThetaCalc's 4.3. PyCalc also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (15 vs 4). On price, review sentiment, ads and in-app purchases 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

PyCalc holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 15 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

ThetaCalc ships an update every 3 months, PyCalc every 2 weeks. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
ThetaCalc versus PyCalc: the parameters behind the verdict, then further details
ParameterThetaCalcPyCalc
PriceFreeFree
Rating4.3 (4 ratings)5.0 (15 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings415 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.0
Further details — not scored
Size1 MB120 MB
Age rating4+4+
DeveloperFelix StehliYoureka Tech, LLC

Customer experience

ThetaCalc

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PyCalc

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ThetaCalc

No in-app purchases

None

PyCalc

No in-app purchases

Questions

Is ThetaCalc free?
ThetaCalc is free to download, with no in-app purchases.
Is PyCalc free?
PyCalc is free to download, with no in-app purchases.
Which has better reviews, ThetaCalc or PyCalc?
PyCalc is rated higher. ThetaCalc averages 4.3 out of 5 from 4 ratings, while PyCalc averages 5.0 from 15 ratings.
Do ThetaCalc or PyCalc have ads?
Neither ThetaCalc nor PyCalc shows ads.
Which is updated more often, ThetaCalc or PyCalc?
ThetaCalc ships an update every 3 months, and PyCalc every 2 weeks. Most recently, ThetaCalc was updated on June 1, 2026 and PyCalc on September 20, 2026.

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