WhatFly vs CastLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WhatFly
This app uses real-time weather and water data to suggest the best flies for your fishing location. Connect with other anglers and guides to gain local knowledge and make new friends.
- Location-based fly suggestions
- Real-time weather and water data integration
- Connect with other anglers
- Access local fishing knowledge
- Friend-finding for fishing trips
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WhatFly is a fly fishing app built to help you catch more fish! Choose any location on the map, and our WhatFly suggestion algorithm takes realtime weather and water data to suggest flies that fish are eating in that area! Also connect with other anglers and guides for a touch of local knowledge and make new friends!
CastLab
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Get personalized video analysis from expert casting instructors. Upload your cast, receive detailed feedback, and take your skills to the next level. That big trip you've been saving for? Your guide isn't going to teach you to double haul. Get your casting dialed before you go, so when the shot comes, you're ready. Are you new to fly fishing? No problem. CastLab's instructors have experience teaching at all levels, from absolute beginners to experienced anglers looking to expand their skills. Share your goals with an instructor over chat and make a plan even before you record your first video. HOW IT WORKS: * Record your casting using your phone's camera * Select skills you want feedback on (roll cast, double haul, spey, etc.) * Choose an instructor or submit to the general queue * Receive expert feedback within 24-72 hours FEATURES: * Video recording with easy-to-use interface * Browse instructors by credentials, specialty, and availability * Track your sessions and feedback history * Instructional content library featuring FFI techniques FOR INSTRUCTORS: Experience casting instructors can join CastLab to reach students worldwide. You can set your own rates and offers, manage your availability, and provide detailed, timestamped video analysis all from the app.
Screenshots
Verdict
The clearest difference is in-app purchases: WhatFly at none against CastLab's 5. WhatFly also leads on ads (none vs shown). On price, 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
Both are free to download. CastLab sells 5 one-off in-app purchases. WhatFly asks for nothing beyond the download.
| Parameter | WhatFly | CastLab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 65 MB | 140 MB |
| Age rating | 12+ | 4+ |
| Developer | Brendon Jolley | CastLab |
In-app purchases
WhatFly
No in-app purchases
CastLab
- Premium Course$9.99
- Premium Course$19.99
- Premium Course$29.99
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- Premium Course$49.99
- Premium Course$79.99









