JustFit vs ScreenLines
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JustFit
This app offers an enhanced experience for applying screen protectors, even if you haven't purchased their product. It guides users through the attachment process, aiming to improve convenience.
- Screen protector attachment experience
- Guidance for application
- Works with or without product purchase
- Improved user convenience
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Justfit improves the inconvenience of attaching screen protectors. We provide great experience more than screen protectors. Whether you purchase the Justfit screen protector or not, you can experience the attachment experience with the Justfit app.
ScreenLines
This utility app provides a visual guide to perfectly align screen protectors on your device. It displays a white guideline around the screen edges, helping you position the protector with precision for a flawless installation.
- On-screen alignment guideline
- Edge-to-edge white border
- Step-by-step installation instructions
- Tutorial video
- Preparation tips
- Keeps screen awake
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ScreenLines helps you apply screen protectors with perfect precision! Simply launch the app and it transforms your screen into a handy alignment template with a white guideline around the edges. Follow the line during installation, and your screen protector will go on perfectly. HOW IT WORKS: - Start installation mode — a thin white line appears around your screen edges - Position your screen protector so the line stays inside its borders - Done! Your screen protector is perfectly aligned WE'VE GOT YOU COVERED: - Step-by-step instructions for beginners - Tutorial video with examples - Solutions to common problems - Preparation tips and tricks YOUR SAVINGS: Repair shop installation: $15-60 per visit With our app: free Annual savings: up to $300 WHY YOU'LL LOVE IT: - Results as good as the pros - Save money and time - Easy even if you've never done it before - Works with all modern iPhones and iPads - Completely free HANDY FEATURES: - Works with any iPhone and iPad model - Guidelines perfectly sized for your screen - Keeps your screen awake during installation Installing a screen protector straight is now simple! Try ScreenLines and see for yourself. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: ScreenLines at 100% against JustFit's 33%. ScreenLines also leads on rating (5.0 vs 1.0) and update cadence (monthly vs every 18 months). JustFit's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.0). On price, ads, monetization model and device support 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. ScreenLines sells 2 in-app purchases, starting at $2.99 per year. JustFit asks for nothing beyond the download.
ScreenLines holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: ScreenLines has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of JustFit's written reviews are positive against 100% of ScreenLines's.
JustFit ships an update every 18 months, ScreenLines monthly. The most recent releases landed on July 11, 2026 and September 18, 2026 respectively.
| Parameter | JustFit | ScreenLines |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (16 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 16 — better |
| Update frequency | Every 18 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Yongseok Kim | Artem Bolotov |
Customer experience
JustFit
ScreenLines
In-app purchases
JustFit
No in-app purchases
ScreenLines
- Premium Yearly$2.991 Year
- Premium Forever$6.99
Questions
Is JustFit free?
Is ScreenLines free?
Which has better reviews, JustFit or ScreenLines?
Do JustFit or ScreenLines have ads?
Which is updated more often, JustFit or ScreenLines?
Other comparisons
