Brushlet vs Karu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Brushlet
This app transforms brushing your teeth into a rewarding habit by locking your chosen applications until you complete a two-minute brushing session. Track your progress, earn badges, and build consistent dental hygiene routines with a guided timer and a friendly mascot.
- App locking until brushing is complete
- Guided two-minute brushing timer
- Quadrant brushing coach
- Streak tracking and freezing
- Progress charts and statistics
- Unlockable badges and mascot reactions
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Brushlet turns brushing your teeth into a habit you actually keep. Meet Tony, your cartoon tooth. Morning and night, Tony guards the apps you choose — social, games, whatever pulls you in — and only unlocks them once you've brushed for a full two minutes. Skip it, stay locked. Brush, and you're free. WHY IT WORKS • Real accountability — using iOS Screen Time, Brushlet actually locks your chosen apps until you brush, not just another reminder you'll ignore. • A guided two-minute brush with a calm timer and a quadrant coach. • Streaks that stick — build a twice-a-day streak, with streak freezes for the odd off day. • Progress you can see — charts for brushes per day, morning and evening consistency, and your brushing rhythm. • Badges to unlock and a mascot who reacts to your day. • For kids and grown-ups alike. HOW IT WORKS 1. Pick the apps Tony guards. 2. Set your morning and evening times. 3. When it's time, your apps lock — brush two minutes to unlock. Your data stays on your iPhone. Brushlet never sees which apps you use — iOS keeps that private, even from us. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Karu
This app uses a minimalist timer to help you focus. As you complete focus sessions, virtual grass grows, and you can then 'cut' it. Unlock additional features to grow trees and flowers.
- Minimalist focus timer
- Virtual grass growth
- Grass cutting mechanic
- Mow mode for free cutting
- Unlockable garden elements (trees, flowers)
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A minimalist focus timer. Set timer, and wait for the grass to grow. Then enjoy the cut. Bonus - Mow mode. Cut as you please and earn "zen" points. Bonus unlock: Grow trees and flowers. $1.99 Terms: https://sites.google.com/view/talk-or-not/home
Screenshots
Verdict
The clearest difference is in-app purchases: Brushlet at none against Karu's 1. Brushlet also leads on iOS requirement (16.4 vs 26.5). 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. Karu sells 1 one-off in-app purchase. Brushlet asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Brushlet against 5.0 for Karu. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
| Parameter | Brushlet | Karu |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 26.5 |
| Further details — not scored | ||
| Size | 46 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Stanislaw Pieter Brinkman | Talk or Not, Inc. |
Customer experience
Brushlet
Karu
In-app purchases
Brushlet
No in-app purchases
Karu
- Lifetime Premium$2.99









