Comparison

Flight Calcs vs Phone Diagnostics Expert

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

Head to head
About

Flight Calcs

This app provides pilots with essential flight calculation tools for logging time, planning routes, and performing preflight checks. It offers accurate, real-world aviation calculations with familiar terminology and unit conventions.

Highlights
  • Pilot time logging and summing
  • Flight block/duty time calculation
  • Time-Speed-Distance (TSD) calculations
  • Wind component and True Airspeed (TAS) resolution
  • Density altitude computation
  • Fuel burn estimation
  • Weight and balance verification
Features
Read full description

Thank you for using Flight Calcs. Your attention to fuel, weather, loading and timing is good airmanship. Keep useful numbers close from preflight to the debrief, with aviation calculators, airport references and saved records on iPhone and iPad. FLIGHT PLANNING AND E6B - Solve heading, wind correction angle, groundspeed, time and distance. - Practice with the visual mechanical E6B simulator. - Check runway crosswind, headwind and tailwind components. - Estimate trip fuel, reserve fuel, endurance, climb and descent. - Calculate true airspeed, Mach, pressure altitude and density altitude. - Review cloud base estimates and holding pattern entry guidance. - Build NavLog legs with checkpoints, ETA, fuel and route notes. - Convert knots, nautical miles, gallons, liters, pounds and more. WEIGHT AND BALANCE - Choose from eleven searchable aircraft planning templates. - Enter occupants, baggage, equipment and usable fuel by station. - Compare zero-fuel, ramp, takeoff and landing weight and CG. - Include ground or taxi burn and trip fuel burn. - Switch between Load, Sheet and Envelope views. - Review basic empty weight, station arms and moments. - See which checks apply when a phase weight maximum is unknown. - Save loading snapshots alongside your other flight records. Templates are starting points. Verify the current aircraft's basic empty weight, station limits, fuel assumptions and CG envelope against its approved documents. AVIATION WEATHER AND AIRPORTS - Retrieve METAR and TAF reports from AviationWeather.gov. - Decode wind, visibility, clouds, altimeter and flight category. - Review TAF changes in a forecast timeline. - Decode pasted NOTAM and SNOWTAM reports. - Compare plain-language summaries with the original reports. - Find nearby airports and weather when you request location. - Search bundled airports by identifier, name, city or region. - Review available runways, elevation, frequencies and time zones. - Browse FAA reference material for preflight and study. TIME, DATES AND RECORDS - Work with flight time, duty snapshots and Zulu time. - Add or subtract times and dates. - Plan countdowns, work windows and business days. - Keep flight, duty, NavLog and Weight & Balance records. - Edit saved entries and browse activity in the Records Calendar. - Search records or duplicate a plan for the next trip. - Share supported results with Pilot Pro. Core calculators, bundled references and saved local data are useful offline. Live weather and App Store purchases need an internet connection. FREE STARTERS AND PILOT PRO E6B, E6B Simulator, Pilot Time, Flight Duty Snapshot and Time Speed Distance are free starters. Free iPhone and iPad access also includes three Pro calculator sessions and three Weight & Balance sessions per day, with five combined. Free Records allow one new record per day and six total. Pilot Pro removes those limits and enables sharing, with monthly and lifetime options. Temporary promotional access is separate from a purchase. Use Flight Calcs for planning and cross-checks. Your aircraft's current POH or AFM, approved Weight & Balance report, official weather briefing, operator procedures and applicable regulations remain the authority. For monthly subscriptions: Monthly Pro is a 1-month auto-renewable subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Phone Diagnostics Expert

This tool offers a comprehensive diagnostic for your device's hardware and functions. It provides both quick, automatic checks and detailed manual tests for individual components, generating complete reports for troubleshooting or verification.

Highlights
  • One-click automatic hardware detection
  • Manual verification of individual components
  • Generation of detailed test result reports
  • Tests for sensors, connectivity, and hardware
  • Camera, screen, and system function checks
Read full description

Phone Diagnostics Expert - Professional Device Comprehensive Diagnostic Tool Key Features • Quick Test: One-click automatic detection of all core functions • Professional Test: Manual verification of individual device components • Detailed Reports: Generate complete test result reports Test Items (25 Total) 【Sensors】(7 items) • Compass: Magnetometer accuracy detection • Vibration: Vibration motor function test • Gravity Sensor: Accelerometer and gyroscope detection • Proximity Sensor: Proximity sensor function detection • Ambient Light Sensor: Environmental light sensor detection • Touch Function: Touchscreen response detection 【Connectivity】(2 items) • WiFi: Wireless network connection detection • Bluetooth: Bluetooth functionality detection 【Hardware】(6 items) • Flashlight: LED flash function detection • Microphone: Audio input function detection • Speaker: Audio output function detection • Earpiece: Call audio output detection • Button Function: Hardware button function detection • Volume Control: Volume adjustment function detection 【Camera】(2 items) • Front Camera: Selfie camera function detection • Rear Camera: Main camera function detection 【Screen Display】(2 items) • Screen Display: Display effect detection • Screen Brightness: Brightness adjustment function detection 【System Functions】(6 items) • Network Lock: Network connection status detection • Face ID: Biometric authentication detection • Storage Space: Device storage detection • Charging Function: Charging system detection • Call Function: Phone call function detection Use Cases • Comprehensive testing before purchasing used devices • Device troubleshooting and issue identification • Function verification after repairs • Regular device health checks Key Advantages • Clean interface, easy operation • Accurate and reliable test results • Support for generating test reports

Screenshots

Flight Calcs4 screens
Phone Diagnostics Expert4 screens

Verdict

The call

The clearest difference is update cadence: Phone Diagnostics Expert at every 2 weeks against Flight Calcs's every 2 months. Phone Diagnostics Expert also leads on review sentiment (100% vs 85%) and ratings volume (17 vs 1). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flight Calcs sells 2 in-app purchases, starting at $1.99 per month and Phone Diagnostics Expert sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Flight Calcs against 4.9 for Phone Diagnostics Expert. That said, the two scores are not equally well evidenced: Phone Diagnostics Expert has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 85% of Flight Calcs's written reviews are positive against 100% of Phone Diagnostics Expert's.

UpkeepUpdate frequency

Flight Calcs ships an update every 2 months, Phone Diagnostics Expert every 2 weeks. The most recent releases landed on October 23, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
Flight Calcs versus Phone Diagnostics Expert: the parameters behind the verdict, then further details
ParameterFlight CalcsPhone Diagnostics Expert
PriceFreeFree
Rating5.0 (1 ratings) — better4.9 (17 ratings)
Positive reviews84.6% of reviews100.0% of reviews — better
Number of ratings117 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size38 MB45 MB
Age rating4+4+
DeveloperVerosocial Studio君 潘

Customer experience

Flight Calcs

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive84.6%
Neutral0.0%
Negative15.4%

Phone Diagnostics Expert

All ratings17 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Flight Calcs

Subscriptions1
  • PilotCalculators pro monthly$1.991 Month
One-time1
  • Pilot Calculators pro lifetime$9.99
1 purchases

Phone Diagnostics Expert

One-time1
  • Pro Unlock$0.99

Questions

Is Flight Calcs free?
Flight Calcs is free to download, with in-app purchases available.
Is Phone Diagnostics Expert free?
Phone Diagnostics Expert is free to download, with in-app purchases available.
Which has better reviews, Flight Calcs or Phone Diagnostics Expert?
Flight Calcs is rated higher. Flight Calcs averages 5.0 out of 5 from 1 ratings, while Phone Diagnostics Expert averages 4.9 from 17 ratings.
Do Flight Calcs or Phone Diagnostics Expert have ads?
Neither Flight Calcs nor Phone Diagnostics Expert shows ads.
Which is updated more often, Flight Calcs or Phone Diagnostics Expert?
Flight Calcs ships an update every 2 months, and Phone Diagnostics Expert every 2 weeks. Most recently, Flight Calcs was updated on October 23, 2026 and Phone Diagnostics Expert on October 3, 2026.

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