Comparison

Combinations & Probabilities vs HexBit

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

Head to head
About

Combinations & Probabilities

Features
Read full description

Combinations & Probabilities puts the full power of discrete mathematics in your pocket — instantly. Whether you're a student, educator, analyst or simply curious about the real odds of anything, this is your precision toolkit. Beautifully designed for iOS 26 with Liquid Glass, supporting dark and light modes. CALCULATORS Combinations and permutations — with or without repetition — plus factorial, all powered by a prime-factorized fraction engine for exact, simplified results. Live calculation updates in real-time as you move the sliders. No loading, no waiting. Just math. PROBABILITY ENGINE Type favorable and total outcomes directly, or pipe your combination result into the probability calculator with a single tap. P(A) = m/n, calculated instantly. SCENARIOS Jump into pre-configured probability models — no setup required: · Lottery Models — real draws from the Americas and Europe. See how odds shift when you play 7 numbers instead of 6. · Dice — single or multiple dice, any target outcome. · Coins — exact odds for any head/tail sequence. HISTORY Tap copy on any result to save it to your history and clipboard simultaneously. Recall, reuse or delete individual entries. Up to 200 saved calculations in Pro — enough for the most demanding sessions. SMART INPUT Sliders for broad sweeps. Step controls — and + for precision. Input validation prevents mathematically impossible states — you simply can't break it. —— C&P Pro is a one-time purchase that removes ads and unlocks all current and future features forever. No subscription. No recurring charges. Pay once, yours forever. All purchases are processed by Apple and subject to Apple's Terms of Sale: https://www.apple.com/legal/internet-services/itunes/ —— Available in English, Portuguese, Spanish, French, Italian and German.

About

HexBit

Features
Read full description

HexBit is the focused calculator for engineers, developers, and students who want powerful math without ads, subscriptions, accounts, or tracking. SCIENTIFIC CALCULATOR • Natural expression input with live results • Trigonometry, inverse trig, hyperbolic functions, logarithms, exponents, roots, factorials, fractions, π, and e • Complex-number calculations with i • RPN mode with a four-level stack, ENTER, DROP, SWAP, and roll controls PROGRAMMER CALCULATOR • Synchronized HEX, DEC, OCT, and BIN values • 8-, 16-, 32-, and 64-bit signed or unsigned modes • AND, OR, XOR, NOT, shifts, and bit rotations • ASCII, Unicode, RGB, and IEEE 754 tools UNIT CONVERTER • 200+ units across 15 categories • Length, mass, volume, temperature, pressure, energy, power, data, and more • Works offline, including built-in currency rates MADE FOR DAILY USE • Searchable calculation history with one-tap reuse and copy • Five calculator themes and configurable display, sound, and haptic settings • Home Screen and Lock Screen widgets • Designed for iPhone and iPad Everything is included in one purchase. Your calculations and preferences stay on your device. Terms of Use: https://taxlite.net/simple_calc/terms.html Privacy Policy: https://taxlite.net/simple_calc/privacy.html

Screenshots

Combinations & Probabilities4 screens
HexBit4 screens

Verdict

The call

The clearest difference is price: Combinations & Probabilities at Free against HexBit's $3.99. Combinations & Probabilities also leads on update cadence (weekly vs monthly). HexBit's advantage is ads (none vs shown) and iOS requirement (17.0 vs 26.0). On in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Combinations & Probabilities is free to download; HexBit costs $3.99 up front. Combinations & Probabilities sells 1 one-off in-app purchase and HexBit sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Combinations & Probabilities ships an update weekly, HexBit monthly. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 2 level
Combinations & Probabilities versus HexBit: the parameters behind the verdict, then further details
ParameterCombinations & ProbabilitiesHexBit
PriceFree — better$3.99
Update frequencyWeekly — betterMonthly
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS26.017.0 — better
Further details — not scored
Size33 MB2 MB
Age rating+44+
DeveloperJoao CarrionZHENGQIAO JIANG

In-app purchases

1 purchases

Combinations & Probabilities

One-time1
  • C&P Pro$2.99
4 purchases

HexBit

Subscriptions3
  • Weekly$1.997 Days
  • Monthly$4.991 Month
  • Yearly$29.991 Year
One-time1
  • Lifetime$79.99

Questions

Is Combinations & Probabilities free?
Combinations & Probabilities is free to download, with in-app purchases available.
Is HexBit free?
HexBit costs $3.99, and also offers in-app purchases.
Do Combinations & Probabilities or HexBit have ads?
Combinations & Probabilities shows ads; HexBit does not.
Which is updated more often, Combinations & Probabilities or HexBit?
Combinations & Probabilities ships an update weekly, and HexBit monthly. Most recently, Combinations & Probabilities was updated on October 19, 2026 and HexBit on October 10, 2026.

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