u/Reliab1yUnreliable

Hi r/Cubers. I've been building a speedcubing app called sub-x and it's been running on the web at subx.guru for a while, and the Android version is finished and sitting in Google's closed testing.

Here's my problem... Google requires new developer accounts to run a closed test with 12 testers for 14 continuous days before the app is allowed on Play Store. I have the app, I do not have 12 friends :(

What this app does

• Timer with running Ao5 / Ao12 / Ao100, +2 and DNF, and random-state scrambles. Works offline and syncs when you're back online.
• Smart cube support over Bluetooth: GAN, and the MoYu. Full solve reconstruction with cross / F2L / OLL / PLL splits, and a report on which stage is actually costing you the most time.
• Trainers, all offline and with no sign-in needed: a cross and x-cross trainer with optimal solutions on a 3D cube, F2L cases, all 57 OLL, all 21 PLL.
• Progress tracking: trend charts, a distribution histogram, and an estimate of how many solves it'll take you to hit a target time.

It's free to use!

How to join

1. Join the tester group: https://groups.google.com/g/subxtesters
2. Open the opt-in link on Android: https://play.google.com/store/apps/details?id=com.subx.mobile
3. Or use the opt-in link on web: https://play.google.com/apps/testing/com.subx.mobile
4. Install from the Play link it gives you

use it for a few solves and please tell me if you like it. Comment here, or use the feedback address in the app.

Cheers!

I started cubing when I was 39 years old. Today marks almost exactly one year since I began learning beginner method (now I use CFOP).

When I first started, I was thinking it would be very cool if I could solve the cube under 30 seconds.

One year later, I'm 40 years old and averaging around 21 seconds.

No, I'm not breaking world records. But I have improved more than I thought was possible when I started.

So if you're in your 30s, 40s, 50s, or beyond and wondering whether it's worth putting in the effort, I would say yes.

You can still get faster and surprise yourself.

Keep cubing!

I've been working on a cross trainer at https://www.subx.guru/cross-trainer and just shipped an X-Cross mode in beta. Looking for feedback from anyone who's learned (or is learning) x-cross.

What it does:

• Solver auto-picks the shortest x-cross across all 4 slots (capped at 8 moves)
• 3D cube highlights the 4 cross edges + the chosen F2L pair so you can see the target pair
• Shows the slot label (FR/FL/BR/BL) so you can verify against your own plan
• Step through the solution one move at a time, or watch the full play

What I'd love to know:

1. Is this useful to you?
2. What range of optimal lengths is most useful to train on? I capped at 8 for now but should I let 9–10 in too?
3. Anything you would want shown that isn't there?
4. Any bugs

It's free, no signup. Will iterate based on what people say.

And big thanks to Pancho1st for requesting this feature!

Cheers,

A few weeks ago I posted some solves here for critique and clearly I was failing to plan the full cross during inspection.

So I built a cross trainer that works backwards from the goal:

You pick the optimal cross length (2–7 moves), and it only generates scrambles which optimal solution is exactly that length.

Other things it does:

• Any cross color, any front face. For color-neutral practice and matching your grip.
• Highlight the 4 cross edges + center of your chosen color, so beginners can see the target pieces without doing the mental rotation. Toggle off when you want the real thing.
• On-screen notation keyboard — tap u/D/R/L/F/B with prime/2 variants instead of fighting the phone keyboard.
• 3D playback of your solution and the optimal one side by side.
• Solution checker that validates the cross is actually solved and shows your move count vs. optimal.

Free, no signup: https://subx.guru/cross-trainer

Thanks to Exact-Alternative557 and veranathemacity for your solve critic to motivate me to build this cross trainer practice cubing more.

Hi r/Cubers!

Been working on a side project for tracking solve stats and one thing that always bugged me was having to time in csTimer, export a CSV, then import it somewhere else just to see my trends.

So I added a native timer directly into the dashboard. Hold space to arm, release to start, tap space again to stop. WCA random-state scrambles. Every solve automatically shows up in your session stats. no export/import step.

It's at subx.guru/dashboard/timer if anyone wants to try it.

also you still can export/import your cstimer sessions!

Hi there, can I get a solve critic please?

Solve 1 R2 B L2 R2 B L2 R2 B2 U2 B L2 U' B F' D' U2 R B U2 L'

Solve 2 D2 B D2 L D' F2 B2 U' F D2 L2 U' R2 F2 U' D2 L2 F2 D F2

Solve 3 L' B' R2 B2 D2 L2 D2 R' F2 R' U2 F2 R' B' L D U2 B' U' F'

Solve 4 D' F D R2 F2 U' F2 U2 F2 R2 U' R2 U' L' B' D' B' L' F'

Solve 5 L2 D2 B2 L2 R2 F U2 B' L2 B D2 R' F' D L D2 U L2 U2 L

Personally I was wondering 2 things:

1. I usually use my thumbs for F move during F2L and wondering if I should switch to use my pointing finger (I use my pointing finger for some OLL cases)

2. During F2L, I tend to place pieces to the original position that I remember even if the place of the pieces is one move closer than the original position that I remember to the target slot