Focus Line vs Sketch Clean
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Focus Line
Effortlessly transform photos into line art with a single click. This app offers various styles, enhances image clarity, and supports multiple export options, including transparent and high-resolution formats. Enjoy a private, ad-free experience without needing a network connection.
- One-click line art generation
- Multiple line art styles
- Image super resolution
- Adjustable line draft accuracy
- Transparent line draft export
- 4K high-resolution export
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No ads. No network required. Private. 【One click generation of line draft】 Fast speed, supporting various styles of image line draft generation 【Super Resolution Support】 Blur the image to make it clearer 【Support multiple export methods】 Support for adjusting the accuracy level of online drafts Support for exporting transparent line drafts Support for exporting 4k high-resolution line drafts and full size line drafts
Sketch Clean
Transform your paper sketches into clean, transparent line art for digital use. This app automatically detects pages, corrects perspective, and removes paper tint and shadows, making your drawings ready for coloring or lettering in other art applications.
- Transparent PNG export
- Automatic page detection
- Perspective correction
- Shadow and tint removal
- Sensitivity adjustment
- Offline processing
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Turn notebook sketches into crisp line art on a transparent background — ready for colour, lettering, or finishing in your favourite art app. No more grey paper texture or smudged pencil fill: Sketch Clean isolates your lines so you can work digitally without redrawing from scratch. Private by design: processing stays on your device — no upload, no account, no analytics. HOW IT WORKS - Photograph your sketch or pick one from your photo library - Sketch Clean detects the page, corrects perspective, and removes paper tint and shadows - Your clean line art is ready on a transparent background in seconds FEATURES - Transparent PNG export — lines on alpha, ready to layer in Procreate, Clip Studio, Photoshop, or any digital art tool - "On White" export — share a white-background version that looks great anywhere - Automatic page detection and perspective correction — no manual cropping needed - Shadow and tint removal — handles yellowed paper, uneven lighting, and pencil smudge - Sensitivity slider — keep faint construction lines or capture only bold strokes - Preserve tones toggle — retain subtle pencil graduation or output pure black lines - Before/after comparison slider — drag to see the difference - Share directly to other apps via the iOS share sheet COMPLETELY OFFLINE Every step of processing happens on your iPhone or iPad. Your sketches are never uploaded anywhere. No internet connection required. ONE PRICE, NO SURPRISES Sketch Clean is a one-time purchase. No subscriptions, no in-app purchases, no ads. Pay once, use forever. PERFECT FOR - Traditional artists digitising pencil or ink drawings - Illustrators preparing line art for digital colouring - Comic and manga hobbyists cleaning up hand-drawn panels - Letterers extracting hand-drawn type - Anyone who sketches on paper and finishes digitally PRIVACY Sketch Clean collects no data. No analytics, no tracking, no accounts. Your artwork stays on your device.
Screenshots
Verdict
The clearest difference is review sentiment: Focus Line at 88% against Sketch Clean's 50%. Sketch Clean's advantage is chart position (#17 vs #116). On price, ads, in-app purchases and monetization model 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
Focus Line costs $0.29 and Sketch Clean $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Focus Line | Sketch Clean |
|---|---|---|
| Price | $0.29 — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 87.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #116 | #17 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 22 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 鑫鑫 陈 | Robert Katona |
Customer experience
Focus Line
Sketch Clean
In-app purchases
Focus Line
No in-app purchases
Sketch Clean
No in-app purchases
