NumDuel vs WhoMaster
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
NumDuel
A trivia game where you guess numerical answers to questions, earning points based on your proximity to the correct value. Compete against friends or random opponents in multiple rounds across various categories, or play solo to learn about the world through numbers.
- Guess numerical answers
- Score based on proximity
- Play against friends
- Play against random opponents
- Multiple game rounds
- Over 10 trivia categories
- Solo play mode
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NumDuel is a trivia quiz game in which there is no right or wrong. You don’t choose between different answer options; rather, you guess the answer to the question and get points depending how close you are to the correct answer. If this wouldn’t be fun enough, you play the game against your friends or random opponents, whoever you prefer. A very simple example question is: “How many people live in the USA” If you guess 250 million and the correct answer is 328 million, your score is 76 out of 100 points. The game consists of five rounds, each with three questions per player, and you can choose questions from over 10 different categories, ranging from science to entertainment. The goal is to have a higher score than your opponent. You can of course also play alone and enjoy learning about our world in numbers.
WhoMaster
Test your knowledge of Doctor Who with this fast-paced trivia app. It features over 1,700 questions across all eras, with modes for practice and hosting your own quiz nights. The app is completely free to play.
- Over 1,700 Doctor Who trivia questions
- Questions grouped by era
- Practice Mode with timed questions
- Tournament Mode for quiz nights
- Completely free to play
- Optional tip jar for support
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Think you know your Daleks from your Cybermen? Put your Time Lord knowledge to the test in Who Master — a fast-paced quiz covering monsters, companions, planets, villains and classic stories from every era of Doctor Who, with over 1,700 questions grouped by era. Completely free — no ads, no accounts, nothing locked behind a purchase. There's an optional tip jar if you'd like to support development. Hosting a pub quiz or a family quiz night? Tournament Mode lets you pick an era and read ten questions aloud to your teams, then reveal each answer when everyone has written theirs down — no timer, no scoring, just a proper quiz night. In Practice Mode you have 15 seconds per question. Choose from four answers, or pass if you're stuck. Get it right and earn a point; get it wrong and lose one. At the end, see exactly how many you got correct, incorrect and passed — then try to beat your high score. Doctor Who™ and related marks are owned by the BBC. This is an unofficial, fan-made trivia app and is not endorsed by the BBC or any Doctor Who entity.
Screenshots
Verdict
The clearest difference is rating: NumDuel at 5.0 against WhoMaster's 4.0. NumDuel also leads on in-app purchases (none vs 1) and update cadence (every 2 days vs weekly). WhoMaster's advantage is ads (none vs shown). On price, review sentiment, ratings volume 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. WhoMaster sells 1 one-off in-app purchase. NumDuel asks for nothing beyond the download.
NumDuel holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
NumDuel ships an update every 2 days, WhoMaster weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | NumDuel | WhoMaster |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Benjamin Raabe | Gary Watson |
Customer experience
NumDuel
WhoMaster
In-app purchases
NumDuel
No in-app purchases
WhoMaster
- donation$0.99









