SigiCalc vs dicetest2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SigiCalc
This app provides a graphical RPN calculator with an undo feature. Users can input mathematical equations and instantly visualize them with a plot. It's designed for simplicity and practicality in mathematical calculations.
- Graphical RPN calculator
- Equation plotting
- Undo functionality
- Simple interface
- Practical calculations
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SigiCalc is a fast, clean RPN calculator that draws your functions. Enter a calculation the RPN way – numbers first, then the operation – and as soon as your expression contains X, tap Graph to see it plotted. No equals key, no parentheses, no fuss. REAL RPN • Classic stack-based entry with Enter, Undo and All Clear • Keys light up only when the stack has enough values – you can't make an invalid entry • The display shows your result, the whole expression in normal notation and the raw stack LIVE FUNCTION GRAPHS • Use X as a variable and plot the result instantly • Pinch to zoom, drag to pan, tap to zoom in, double-tap to reset • Touch and hold to read the exact x / y value on the curve • Discontinuities like tan(x) or 1/x are drawn correctly – no misleading vertical lines SCIENTIFIC FUNCTIONS sin, cos, tan and their inverses, natural log, square, square root, reciprocal, sign change and π DESIGNED FOR TODAY'S DEVICES • Light and Dark Mode, portrait and landscape • iPad: calculator and live graph side by side • Smooth animations and haptic feedback PRIVATE BY DESIGN SigiCalc works entirely on your device. No account, no network, no ads, no tracking. Example: X ↲ X sin × plots x · sin(x). What changed versus your text and why: - Leads with a benefit, not a category: "draws your functions" is the hook; "simple and practical graphical" told the reader nothing they'd search for. - Explains RPN in one sentence for people who don't know it, since that's the biggest reason someone bounces. - Bulleted feature blocks — App Store descriptions are skimmed, and the capitalised headings scan well in the store's plain-text rendering. - Adds Dark Mode / iPad / privacy, all of which are new in 3.0 and are things reviewers and users look for. - Fixed "polish" → "Polish" and "equation" → "expression" (you plot expressions, not equations).
dicetest2
This free app generates strong, complex passphrases using the Diceware method. It simulates dice rolls to select words from a comprehensive list, allowing for customization with personal "salt" characters and capitalization for enhanced security.
- Diceware passphrase generation
- Simulates dice rolls
- Uses Diceware word list
- Customizable security options
- Displays key numbers for verification
- Generates long or short passphrases
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This simple, free, no In-App Purchases App generates a passphrase/password using the keys and values in the Diceware Passphrase Home Page word list. The app basically throws five dice for you (or 30 for 6 elements) to generate random keys to word values in the dictionary, which can then be joined together to form a complex passphrase. Key numbers are displayed in addition to the words (Values) so that you can compare them with the original Diceware data, if desired. Note: Six possible dice values, taken 5 at a time gives 6^5 = 7776 words in the database. Six PassPhrase words give 7776^6 = 2.2x10^23 possibilities (~1/3 of a mole for chemists)! That is over 2^77 = 1.5x10^23. One can also add personalized "salt" characters and Capitalize selected letters in the passphrase generated here to enable even stronger security, e.g. add every other letter of your spouse's secret nickname, in reverse alphabetical order, with a special character or two thrown in. Be creative! If you’d like a shorter, or longer passphrase possibility use fewer elements, or add multiple clicks. Refer to the The Diceware Passphrase Home Page for comments on the true randomness of computer generated random numbers. Using actual dice for this process is a better way to randomly select passphrase words. However, this app introduces the user to the Diceware concept, its word list(s) and allows you to experiment easily and generate many passphrases. The resulting suggested passphrases are offered without any warranty as to their use.
Screenshots
Verdict
SigiCalc and dicetest2 both sit at 5.0 stars, but that hides the real split: 100% of dicetest2's written reviews are positive against 50% of SigiCalc's. dicetest2 also leads on iOS requirement (14.0 vs 17.0). On price, rating, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for SigiCalc against 5.0 for dicetest2. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 50% of SigiCalc's written reviews are positive against 100% of dicetest2's.
SigiCalc ships an update every 48 months, dicetest2 every 35 months. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.
| Parameter | SigiCalc | dicetest2 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 48 months | Every 35 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Siegware | Richard Loda |
Customer experience
SigiCalc
dicetest2
In-app purchases
SigiCalc
No in-app purchases
dicetest2
No in-app purchases









