ThetaCalc vs SilentDice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThetaCalc
This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
- Reverse Polish Notation (RPN) calculator
- User-programmable functions
- JavaScript equation support
- Extensible functionality
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ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.
SilentDice
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Lottery feature allows you to give a list of names and SilentDice makes it a dice that you can throw, randomly selecting one of the names. Dice feature brings you regular dice that give numbers as result, but you may freely pick the number of dice and how many sides they have. You can combine dozens of different dice in a single throw if you like. You may also define your own weighted dice where the chance of each side is freely configurable.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ThetaCalc | SilentDice |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 12.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Felix Stehli | Jani Kristian Kalervo Kilpi |
In-app purchases
ThetaCalc
No in-app purchases
SilentDice
- Quick Pads$0.49
- Storage$0.99
- Full App$2.99
