DuelTool vs Numby
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
DuelTool
This utility helps manage life points and battle calculations for YU-GI-OH! duels. It features intuitive controls for increasing or decreasing life points, calculating battle damage, and supports special card effects. Additional functions include dice rolling, coin flips, and undo/reset options for a smoother gameplay experience.
- Life Point calculation
- Battle Phase damage calculation
- Special card effect support
- Dice and coin support
- Undo and reset functions
- Customizable buttons
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[Features of the application] This is a tool to use when the duel in YU-GI-OH!. Can calculate the Life Points of the player. [How to use] When the bar is red, Life Points will reduce. Conversely, When the bar is blue, Life Points will increase. If you tap the Life Points part, you can change the player to reduce the Life Points. [Other Functions] Calculation of the Battle Phase damage.(VS button) Supports Shrinka and Solemn Judgment.(1/2 button) Supports dice and coin. Supports undo and reset. Can customize the upper 3 buttons from setting screen. Come on, let's start duel! #This app and developers, have no relationship with KAZUKI TAKAHASHI/SHUEISHA /KONAMI.
Numby
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Numby is a calculator reimagined with design at its core. Tired of cluttered, outdated calculator apps? Numby offers a refreshingly clean experience with bold, easy-to-read numbers and a thoughtfully minimal interface. Why Numby? Beautiful Typography โ Large, high-contrast display makes results instantly readable. Color-Coded Operators โ Blue for division, red for multiplication. Recognize operations at a glance. Minimal Design โ No clutter, no distractions. Just clean, focused calculations. Expression Preview โ See your current calculation below the result. Everyday tools deserve great design. Try Numby today.
Screenshots
Verdict
The clearest difference is update cadence: Numby at every 2 days against DuelTool's every 2 months. DuelTool's advantage is iOS requirement (7.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DuelTool ships an update every 2 months, Numby every 2 days. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.
| Parameter | DuelTool | Numby |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | โ |
| Update frequency | Every 2 months | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPod โ better | iPhone |
| Requires iOS | 7.0 โ better | 16.6 |
| Further details โ not scored | ||
| Size | 1 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | People Software Corporation | TEAM MILESTONE GP. |
In-app purchases
DuelTool
No in-app purchases
Numby
No in-app purchases









