# ThetaCalc vs SilentDice

The clearest difference is in-app purchases: ThetaCalc at none against SilentDice's 3. SilentDice's advantage is iOS requirement (12.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SilentDice sells 3 one-off in-app purchases. ThetaCalc asks for nothing beyond the download.

ThetaCalc ships an update every 3 months, SilentDice every 2 months. The most recent releases landed on June 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | ThetaCalc | SilentDice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/thetacalc/id1521614636/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 1 MB | 62 MB |
| Requires iOS | 17.6 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Felix Stehli](https://appshunter.io/developer/1521614638) | [Jani Kristian Kalervo Kilpi](https://appshunter.io/developer/1539946796) |

## What reviewers say

### 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


### SilentDice

[App page](https://appshunter.io/ios/app/silentdice/id1539946794)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quick Pads | $0.49 | one-time |
| Storage | $0.99 | one-time |
| Full App | $2.99 | one-time |


## Frequently asked questions

### Is ThetaCalc free?

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

### Is SilentDice free?

SilentDice is free to download, with in-app purchases available.

### Do ThetaCalc or SilentDice have ads?

Neither ThetaCalc nor SilentDice shows ads.

### Which is updated more often, ThetaCalc or SilentDice?

ThetaCalc ships an update every 3 months, and SilentDice every 2 months. Most recently, ThetaCalc was updated on June 1, 2026 and SilentDice on September 18, 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.*