Petal Layout Pro vs Unhook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Petal Layout Pro
This app assists in the fabrication of spherical and hemispherical heads by calculating precise petal layouts. It supports various part divisions for accurate flat pattern development, ideal for pressure vessel and storage tank construction.
- Sphere petal layout calculation
- Hemispherical head petal layout calculation
- Multiple part divisions (12, 24, 48)
- Unit setting for mm/inches
- Flat pattern development
- Supports pressure vessel fabrication
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Petal Layout is a professional fabrication calculator for developing petal-type layouts for spheres and hemispherical heads. It is designed for pressure vessel fabrication, process equipment manufacturing, spherical tank fabrication, and industrial sheet metal work. The app generates fabrication-ready layout dimensions that can be used for marking plates or sheet metal before cutting, forming, and assembling spherical or hemispherical components. Whether you are a fabrication engineer, fitter, workshop technician, production engineer, or pressure vessel professional, Petal Layout helps simplify complex petal development calculations and improves accuracy during fabrication. Supported Petal Layouts • Hemispherical Head / Hemi Head • Hemispherical Dish End • Sphere / Spherical Tank Hemispherical Head Petal Layout Generate petal development dimensions for hemispherical pressure vessel heads and dish ends. Enter the required head diameter and straight face length, select the desired number of development divisions, and calculate the layout dimensions required for plate marking. Sphere Petal Layout Generate petal-type development dimensions for spherical tanks and spherical shells. Enter the sphere diameter and select the required number of divisions to generate the layout dimensions for fabrication. Development Options Choose from predefined development divisions: • 12 Parts • 24 Parts • 36 Parts • 48 Parts You can also enter a custom number of development divisions according to your fabrication requirements. Features • Sphere petal layout development • Hemispherical head petal development • Dish end petal layout • Spherical tank layout calculations • Multiple development division options • Custom development line/part count • Fabrication-ready marking dimensions • Clear and easy-to-understand results • Simple professional interface • Metric and Imperial unit support • No internet connection required Fabrication Applications Petal Layout is useful for: • Pressure Vessel Fabrication • Spherical Tank Fabrication • Process Equipment Fabrication • Storage Tank Manufacturing • Dish End Fabrication • Hemispherical Head Fabrication • Sheet Metal Fabrication • Industrial Fabrication • Plate Layout and Marking Designed For • Fabrication Engineers • Fabrication Fitters • Production Engineers • Mechanical Engineers • Workshop Technicians • Pressure Vessel Fabricators • Tank Fabricators • Process Equipment Manufacturers • Fabrication Supervisors • Engineering Students For improved fabrication accuracy, the app can be used with appropriate mean dimensions when developing and marking petal layouts. Petal Layout provides a convenient solution for generating sphere and hemispherical head petal development dimensions, helping reduce manual calculations, save fabrication time, and improve accuracy during plate layout and marking.
Unhook
This app blocks the YouTube news feed, preventing endless scrolling and distracting content. It allows users to access YouTube for specific videos without falling down rabbit holes of unrelated content. Enjoy a more focused viewing experience.
- Blocks YouTube news feed
- Eliminates distractions
- Focused YouTube usage
- No ads
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Let's face it, how many times have we gone to YouTube for something specific only to end up watching a video on beluga whales doing somersaults? Say Good By to that with the YouTube News Feed BLOCKED. So you Use YouTube Without Getting Used by it. Unhook Mobile App | News Feed Eradicator | DF Tube Terms of Use: https://www.betimeful.com/eula https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Unhook at Free against Petal Layout Pro's $3.99. Unhook also leads on review sentiment (37% vs 0%) and update cadence (every 2 weeks vs every 41 months). Petal Layout Pro's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Unhook is free to download; Petal Layout Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Petal Layout Pro ships an update every 41 months, Unhook every 2 weeks. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.
| Parameter | Petal Layout Pro | Unhook |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | — | 4.3 (128 ratings) — better |
| Positive reviews | 0.0% of reviews | 37.3% of reviews — better |
| Number of ratings | — | 128 — better |
| Update frequency | Every 41 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.1 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 162 MB |
| Age rating | 4+ | 17+ |
| Developer | Imran Pinjara | Be Timeful Inc |
Customer experience
Petal Layout Pro
Unhook
Bugs and requests
Petal Layout Pro
Not enough reviews yet to summarise bugs or requests.
Unhook
Reported bugs
17 issues- Videos don't open
- Cancel subscription button doesn't work
- Constant error code 152-4
- Daily progress resets
- App is glitchy
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- Search results don't appear or scroll quickly
- Shows only thumbnails and prompts to subscribe
- App won't let you do anything without Screen Time access
- Can't find Screen Time permission in settings
- App directs to BeTimeful after finding Unhook online
- No features in free version
- Blank screens and few settings
- No instructions
- Can't tap on free plan option
- Spammed with pop-ups to use pro
- Doesn't show feed initially
- Makes it hard to scroll through shorts
Requested features
5 requests- Extension for Safari on iPhone
- Allow free version use without forced pro
- Clearer instructions for screen time permission
- Option to sign out of YouTube account
- Ad-free use without review manipulation
In-app purchases
Petal Layout Pro
No in-app purchases
Unhook
No in-app purchases









