# CALC 1 Programmable Calculator vs ThetaCalc

The clearest difference is price: ThetaCalc at Free against CALC 1 Programmable Calculator's $9.99. CALC 1 Programmable Calculator's advantage is rating (4.6 vs 4.3) and update cadence (every 5 weeks vs every 3 months). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

ThetaCalc is free to download; CALC 1 Programmable Calculator costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CALC 1 Programmable Calculator holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 10 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

CALC 1 Programmable Calculator ships an update every 5 weeks, ThetaCalc every 3 months. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CALC 1 Programmable Calculator | ThetaCalc |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/thetacalc/id1521614636/reviews) |
| Number of ratings | **10** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 8 MB | 1 MB |
| Requires iOS | **16.1** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CalcFxC, LLC](https://appshunter.io/developer/395979596) | [Felix Stehli](https://appshunter.io/developer/1521614638) |

## What reviewers say

### CALC 1 Programmable Calculator

[App page](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951)

Create custom calculators with AI-generated JavaScript functions for precise calculations and data visualization. Assign programs to keys and manage data efficiently. Offers multiple calculation modes and extensive documentation.

**Highlights:** AI-assisted JavaScript function creation, Customizable function calculators, Data visualization and plotting, Programmable calculator keys, List and data management, Multiple calculation modes (algebraic, RPN)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ThetaCalc

[App page](https://appshunter.io/ios/app/thetacalc/id1521614636)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CALC 1 Programmable Calculator free?

CALC 1 Programmable Calculator costs $9.99, with no in-app purchases.

### Is ThetaCalc free?

ThetaCalc is free to download, with no in-app purchases.

### Which has better reviews, CALC 1 Programmable Calculator or ThetaCalc?

CALC 1 Programmable Calculator is rated higher. CALC 1 Programmable Calculator averages 4.6 out of 5 from 10 ratings, while ThetaCalc averages 4.3 from 4 ratings.

### Do CALC 1 Programmable Calculator or ThetaCalc have ads?

Neither CALC 1 Programmable Calculator nor ThetaCalc shows ads.

### Which is updated more often, CALC 1 Programmable Calculator or ThetaCalc?

CALC 1 Programmable Calculator ships an update every 5 weeks, and ThetaCalc every 3 months. Most recently, CALC 1 Programmable Calculator was updated on October 24, 2026 and ThetaCalc on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*