moss vs Blok
A $29 card, or scan any product barcode. Emergency unlocks cost money.
Checked 11 November 2026 against Just Commit Inc.'s own pages. We make moss, so we have linked every source below.
What Blok is
Blok starts and stops a block when you scan its $29 card or a product barcode you registered, such as the back of a shampoo bottle. It has modes, schedules, limited breaks, streaks and a way to compare progress with friends. There is an optional Blok Pro subscription, and emergency unlocks are sold in the app: $4.99 for one or $12.99 for three. It needs iOS 17 or later.
What moss is
moss is an iPhone app that comes with a small physical stone. You choose the apps that distract you, tap your phone on the stone, and those apps stay locked until you tap the stone again. People who live together can link their phones to share schedules and put their phones down at the same time, while each person keeps control of their own phone. Locking is free in the app, the stone is a one-time purchase, and the household features are a paid add-on.
Side by side
| Feature | moss | Blok |
|---|---|---|
| Price | US$49 stone, free app | Card $29 |
| Subscription | None to lock your own phone. Household features are a paid add-on | Optional Blok Pro |
| Works on | iPhone only, iOS 17 or later | iPhone and iPad (iOS 17+) |
| How you lock | Tap the stone, or start from the app, a Shortcut, the lock screen or the Action Button. Schedules by day of week | Scan the card or a registered barcode. Schedules |
| How you unlock | Tap the stone, in the app | Scan the card or barcode |
| If you need back in | 3 emergency unlocks a month, refilled automatically | Paid: $4.99 each, or 3 for $12.99 |
| Locking together as a household | Yes, as a paid add-on. Shared schedules, sessions others join in one tap, a view of whose phone is down, a streak. Nobody controls anyone else | Compare progress with friends. No shared household sessions |
| Whose key opens your phone | Only your household's own stone, card and sprigs unlock your phones | Your card or barcode |
Where Blok is better
- The card is cheap, and you can start with a barcode you already own.
- Friends can compare progress.
Where moss is better
- Emergency unlocks are free and refill monthly. Nobody should pay to get into their own phone.
- Locking never needs a paid tier.
- Household sessions and the who is in view.
Who should pick which
Pick Blok if
You want the lowest price to try the idea.
Pick moss if
You want one price, no upsells and a household that joins in.
Sources
Spotted something out of date? Tell us and we will fix it.
moss is a stone that locks the apps you choose.
Tap to lock, tap to unlock. One price, and locking needs no subscription.
