StrikeLines vs Sea Depth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrikeLines
This professional GPS app helps anglers maximize their time on the water. Record fishing trips, manage waypoints, and download high-quality fishing maps for smarter planning and more rewarding adventures.
- Track Recording
- Waypoint Management
- GPX Import/Export
- Purchased Fishing Maps
- Interactive Map Displays
- Local Data Storage
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Take control of your fishing adventures with StrikeLines, the professional GPS app designed for anglers. Record your trips, manage waypoints, and download high-quality fishing maps to maximize your time on the water. Key Features • Track Recording – Record and save fishing trips with accurate GPS tracking. • Spot & Waypoint Management – Mark, organize, and revisit your best fishing locations. • Import & Export GPX – Share tracks or back up your data with GPX file support. • Purchased Maps – Download and render premium StrikeLines maps directly in the app. • Interactive Maps – Visualize your activity with clear, detailed map displays. • Privacy First – All data is stored locally on your device; you stay in control. Whether you’re charting new waters or returning to a trusted spot, StrikeLines gives you the tools to fish smarter, plan better, and keep your data safe. Download StrikeLines today and make every fishing trip more productive and rewarding.
Sea Depth
Visualize detailed underwater terrain with high-resolution bathymetric charts. Gain deeper insights into seafloor structure, contours, and terrain for offshore activities. Includes optional data overlays and waypoint management for enhanced situational awareness.
- High-resolution shaded-relief bathymetry
- Detailed depth contours with intelligent labeling
- Optional data overlays (pipelines, bottom composition)
- GPX waypoint import/export
- Drift Test tool
- Offline chart access
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SeaDepth delivers professional-grade bathymetric charts for anglers looking to add a new level of detail and insight offshore. Built using high-resolution survey data and advanced shaded-relief techniques, SeaDepth reveals underwater structure, contours, and terrain that traditional charts often fail to show. The result is a clearer, more intuitive view of the seafloor - helping anglers and captains better understand offshore environments before and during time on the water. In addition to detailed depth visualization, SeaDepth offers optional data overlays, intelligent contour labeling, waypoint interoperability, and analytical tools that enhance situational awareness offshore. Key Features • High-resolution shaded-relief bathymetry • Detailed, clearly labeled depth contours • Intelligent contour interval scaling by depth range • Pipeline overlay (Gulf of America) • Bottom composition overlays highlighting seafloor characteristics • GPX waypoint import and export for interoperability with other platforms • Drift Test tool to observe drift direction and speed over time • Offline chart access for use beyond cellular coverage • Smooth zooming and panning optimized for offshore use Depth Contours with Intelligent Labeling SeaDepth uses a graduated contour labeling scheme designed to provide maximum detail where it matters most, while maintaining clarity and performance in deeper depths: • 1-foot contour intervals from 1 to 500 feet • 10-foot contour intervals from 500 to 2,500 feet • 80-foot contour intervals from 2,500 feet to abyssal depths This approach delivers high-resolution insight in shallow and mid-depth areas while avoiding visual clutter in deepwater environments. Overlay Intelligence SeaDepth allows users to enable optional overlay layers such as pipelines and bottom composition data in supported regions, including the Gulf of America. These overlays provide additional context and help users interpret bottom features and structural edges with greater confidence. All available overlay layers are included at no additional charge. Waypoint Management (GPX Support) SeaDepth supports importing and exporting waypoints using the GPX file format, making it easy to move data between SeaDepth and other compatible marine devices, charting software, or planning tools. This allows users to maintain consistent waypoint libraries across platforms. SeaDrift-Drift Test Feature The built-in Drift Test feature helps users evaluate drift behavior by tracking movement over time. This is especially useful when assessing current and wind influence to have more productive drifts. Built for Offshore Reliability Charts, overlays, and waypoint data are stored locally on the device, allowing SeaDepth to function reliably offshore where connectivity may be limited or unavailable. Performance and usability are optimized for real-world offshore conditions. Disclaimer SeaDepth is intended as a supplemental planning and visualization tool only. It is not a substitute for official nautical charts, onboard navigation systems, or prudent seamanship. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: StrikeLines at 5.0 against Sea Depth's 3.0. StrikeLines also leads on in-app purchases (none vs 10). Sea Depth's advantage is update cadence (weekly vs every 3 weeks) and chart position (#182 vs unranked). On price, ratings volume, ads 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. Sea Depth sells 10 in-app purchases, starting at $99.99 per year. StrikeLines asks for nothing beyond the download.
StrikeLines holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively.
StrikeLines ships an update every 3 weeks, Sea Depth weekly. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.
| Parameter | StrikeLines | Sea Depth |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 3.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #182 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 66 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | Strikelines Pensacola, LLC | Seadepth Charst |
Customer experience
StrikeLines
Sea Depth
In-app purchases
StrikeLines
No in-app purchases
Sea Depth
- Premium Charts Access7 Days trial$99.991 Year
- Western GOA 50%$150.00
- Eastern GOA 30%$209.99
- Cental GOA 20%$239.99
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- Eastern GOA 20%$239.99
- Cental GOA$300.00
- Western GOA$300.00
- Eastern GOA$300.00
- Florida-West Coast$300.00
- South Florida/Northern Bahamas$300.00





