Comparison

Crew Rest Pro vs Solar Panel Angle Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Crew Rest Pro

Features
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Crew Rest Pro is a professional crew rest calculator built for pilots to plan, manage, and optimize inflight rest schedules with precision. Designed for real-world operations, the app helps flight crews quickly calculate rest rotations, ensuring balanced workload distribution and improved fatigue management on long-haul flights. With an intuitive interface and powerful features, Crew Rest Pro reduces complexity and allows you to focus on safe and efficient operations. Features • Instant Crew Rest Calculations: Quickly determine optimal rest periods between crew members. • Custom Crew Names: Assign real names instead of generic labels like CM1 or CM2. • Save & Share:Export rest plans as screenshots and share with your crew instantly. • History Log:Keep track of previous calculations for quick reference. • Operational Simplicity: Built for fast use in the cockpit and briefing environment.

About

Solar Panel Angle Calculator

Features
Read full description

Portable solar panels aren't roof panels. The "just tilt it to 30°" advice is simply wrong when you're only charging for a few hours at a campsite. SolarPanelAngle finds the angle and direction that harvest the most energy for YOUR hours in the sun — then helps you physically aim the panel until it's right. HOLD YOUR PHONE TO THE PANEL - Lay your iPhone flat against the panel and it reads the real tilt and heading - A two-axis target shows exactly how to adjust: "raise 8°, swing 12° right" - Sound and haptics guide you when you can't see the screen — because your hands are on the panel, not the phone - Turns green the moment it's aimed OPTIMIZED FOR YOUR HOURS, NOT THE WHOLE YEAR - Tell it how long you'll charge — it finds the single best fixed angle for that window - Or track the sun right now for maximum instant output - A daily power curve shows what each angle earns, and compares flat vs best-fixed vs tracking A NUDGE WHEN IT'S TIME TO RE-TILT - Portable setups drift as the sun moves — get reminded when to adjust - "14:00 — set tilt to 55°", scheduled to your own rhythm - A shade warning before a tree or ridge blocks your panel, and a pack-up heads-up before sunset SEE THE SHADE COMING - Scan the horizon around your site and it predicts when the sun drops behind obstacles - "Effective sunlight 4.2 h (10:40–14:50)" — save each campsite and reuse it FULLY OFFLINE — BUILT FOR THE BACKCOUNTRY - The sun is computed on your device from date and location. No internet, ever - Temperature loss is built in, so summer estimates match reality - One-time purchase. No subscription, no ads, no account. Nothing leaves your phone SolarPanelAngle is a planning aid. Estimates assume clear sky; real output varies with clouds, temperature, shade and panel condition. Never stare at the sun or point the camera at it for long.

Screenshots

Crew Rest Pro4 screens
Solar Panel Angle Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Crew Rest Pro at daily against Solar Panel Angle Calculator's every 6 weeks. Crew Rest Pro also leads on device support (3 vs 1) and price ($0.99 vs $1.99). On ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Crew Rest Pro costs $0.99 and Solar Panel Angle Calculator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Crew Rest Pro ships an update daily, Solar Panel Angle Calculator every 6 weeks. The most recent releases landed on September 12, 2026 and October 1, 2026 respectively.

Scorecard4 real differences Ā· 2 level
Crew Rest Pro versus Solar Panel Angle Calculator: the parameters behind the verdict, then further details
ParameterCrew Rest ProSolar Panel Angle Calculator
Price$0.99 — better$1.99
Update frequencyDaily — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size43 MB10 MB
Age rating4+4+
Developerbillig.ch GmbHNetflowers Inc.

In-app purchases

None

Crew Rest Pro

No in-app purchases

None

Solar Panel Angle Calculator

No in-app purchases

Questions

Is Crew Rest Pro free?
Crew Rest Pro costs $0.99, with no in-app purchases.
Is Solar Panel Angle Calculator free?
Solar Panel Angle Calculator costs $1.99, with no in-app purchases.
Do Crew Rest Pro or Solar Panel Angle Calculator have ads?
Neither Crew Rest Pro nor Solar Panel Angle Calculator shows ads.
Which is updated more often, Crew Rest Pro or Solar Panel Angle Calculator?
Crew Rest Pro ships an update daily, and Solar Panel Angle Calculator every 6 weeks. Most recently, Crew Rest Pro was updated on September 12, 2026 and Solar Panel Angle Calculator on October 1, 2026.

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