WatchThisCube vs XC Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WatchThisCube
This app provides a convenient puzzle timer directly on your wrist. It features customizable sounds and haptic feedback for crucial countdowns, allowing for hands-free operation. Times are automatically saved for easy tracking of your performance.
- On-wrist puzzle timer
- Sound and haptic feedback
- Inspection time alerts
- Automatic time saving
- Stackmat timer functionality
- Detachable watch use
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WatchThisCube is a Puzzle Timer for your wrist! Perfect for on the go, without having to carry a timer with you, or when you're in a pinch and need a quick solve or two! A key feature also includes SOUNDS & HAPTICS for your inspection time! Allowing you to FEEL a tap when you have 7 seconds left, 3 seconds left, and when the timer begins! All without having to take your eyes off the puzzle! With functionality similar to a traditional stackmat timer, you should be able to take right off with familiar gestures for control! You can even take the watch off of your wrist and set it down on the table, for familiarity! Tracking times is simple! Stop the timer, and they are saved! That way you know exactly how you did! WatchThisCube is the best way to quickly and easily make sure you always have your puzzle timer on hand! Literally!
XC Master
This app offers AI-powered analysis and training for speedcubing techniques like Cross, XCross, and lookahead. It provides detailed move explanations, 3D demonstrations, and personalized practice sessions based on your errors and weaknesses.
- AI solution analysis with move explanations
- 3D demonstrations of algorithms
- Automatic review of recent errors
- Lookahead prediction and data tracking
- Timed practice with cross-device sync
- Real WCA scrambles and F2L highlights
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XC Master · Pro 3x3 Cube AI Trainer Connect a smart cube and every turn is recorded, broken down, and analyzed. AI reads each of your solves, stage drills target your weak spots, algorithms get drilled case by case, and you can race cubers on other brands of smart cube in real time — on speed or on move count. Completely free · No ads · No push notifications — just focused practice. [Smart Practice] Works with Bluetooth smart cubes from all major brands. Automatic timing with a per-stage split of time and moves for Cross, F2L, OLL, and PLL, slice-move (M / E / S) recognition, and a rating for every solve. Give the cube a quick back-and-forth twist to start the next solve. No need to solve it first — XC Master works out the moves from wherever your cube is to the next scramble. [AI Solve Insight] A full AI analysis of your actual solve, stage by stage: it finds wasted moves, likely slips, and F2L pair choices, then coaches you with concrete things to practice. Tap "Try again" to load the same scramble right away. Practice becomes more than a number on the timer. [Live Battles Across Brands] Smart cubes from different brands compete in the same room, and your opponent's 3D cube turns live with every move they make. • Race by time or by moves: fastest hands win, or fewest moves win • Handicaps in seconds or moves: stronger players give a head start, so every match stays close • Free, Ao5, or Bo3 format, chosen when you create the room • Join by QR code or room code, and watch as a spectator when the room is full [Smart Stage Practice] Drill Cross, XC, F2L, and CF separately — each attempt ends as soon as that stage is done: • Cross can be measured against the best solution, within a tolerance you choose • XC only counts as a true XCross — solving the cross first and then the pair doesn't qualify • F2L scrambles start with the cross already solved, so you go straight to the pairs • Practice on any of the six colors, with move- or time-based goals you set [Algorithm Library & Practice] F2L, OLL, PLL, WV, ZBLS and ZBLL libraries with case diagrams and step-by-step 3D demos. Each case offers standard and community-shared solutions — set your go-to and it syncs to your account, or submit your own. Practice on your smart cube with instant feedback: Perfect, Not your alg, Wasted moves, or Likely slip, plus move count and TPS. In no-scramble mode, follow the virtual cube on screen; turn on Continuous to roll straight into the next case. [Favorites & Review] Organize favorites into your own folders, select several to start a Timed, Smart, or Lookahead review, and load any saved or past scramble into any practice mode. Smart Practice also gathers your recent slowest and least efficient solves for focused drilling, judging progress by why each one was picked. [Classic Practice] No smart cube needed: full solving on all six colors (fewest-move Cross, plus XC / XXC / 3XC / 4XC averaging 7 / 9 / 11 / 13 moves), each solution with AI analysis and a 3D demo; plus lookahead practice, real WCA competition scrambles, and step-based Cross training. Records and favorites sync across devices.
Screenshots
Verdict
The clearest difference is in-app purchases: XC Master at none against WatchThisCube's 3. XC Master also leads on update cadence (every 4 days vs every 2 months). On price, rating, ratings volume and ads 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. WatchThisCube sells 3 one-off in-app purchases. XC Master asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for WatchThisCube against 5.0 for XC Master. Both are backed by a comparable volume of ratings — 12 and 5 respectively.
WatchThisCube ships an update every 2 months, XC Master every 4 days. Both last shipped on October 24, 2026.
| Parameter | WatchThisCube | XC Master |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (12 ratings) | 5.0 (5 ratings) |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 12 — better | 5 |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Aaron Brannan | Xingxiaolv Technology |
Customer experience
WatchThisCube
XC Master
In-app purchases
WatchThisCube
- $0.99 Tip$0.99
- $2.99 Tip$2.99
- $4.99 Tip$4.99
XC Master
No in-app purchases









