Comparison

AvionLog vs 4Pilots

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

Head to head
About

AvionLog

This advanced pilot logbook offers fast flight entry, custom reports, and secure backups. It synchronizes across iOS devices for a simple price, with a free trial period for new users.

Highlights
  • Fast flight entry
  • Custom reports with map view
  • Secure backup features
  • Live sync across devices
  • Import from other logbooks
  • Track flight and duty limitations
  • Digital FAA endorsements
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Advanced electronic pilot logbook featuring: Fast flight entry, custom reports, secure backup features, social sharing and so much more. Use and synchronize across all your iOS devices for one simple price. *** User Feedback *** “This one’s a keeper. I’ve tried a bunch of logbook apps and they all had something wrong with them. This one is excellent. Easy to use, and the reporting system, where you create your own criteria to calculate times, and estimate when you’ll reach certain goals based on past performance, is far more intuitive to use than anything ****** has to offer. Also, the 3 tiered back-up system is excellent. Never gonna lose my data now…” "Us­ing the free tri­al, found it easy to use and full of func­tion­al­ity. Great job the de­velopers! The ease of con­nec­tion to aims has been great, and the pdf formats are su­perb. Will def­in­itely be buy­ing when the tri­al ex­pires." "Excellent Logbook ... Fair price for a logbook like this!" *** AvionLog Advantages *** - Intuitive flight entry - Live Sync between your devices - Multiple independent backups online and in-app - Auto night time calculation - Sign flights - Social sharing of flight maps and globes - Import from LogTen Pro, mccPILOTLOG, CrewLounge PILOTLOG, Garmin Pilot Log and ZuluLog. - Emirates, AIMS & AIMS HTML file imports - Free for the first 350 flight hours or 6 months of usage, whichever takes longer - Quickly log next and return flights - Log duty times like reserve, standby etc. - Log simulator time - Custom reports with map view - Track flight and duty limitations including pre-loaded FAR 117 and EU-OPS limits - Track currency limits such as landings etc. - Large database of airports and aircraft - Multiple themes designed for bright and dark cockpits - 'Carry forward' past flight time with a dedicated tool - Bulk change tool to move flight time from one column to another. Ideal for adapting to logbook formats - In-App FAQ’s & access to YouTube tutorials when online - Quickly log off duty times - Fast approach type logging - Track your expiries like medical, licences, ratings - Create and sign digital FAA endorsements - Track relief time when flying heavy crew including an intuitive night time tool to adjust night hours for time spent in the seat - logbook auditing *** Commitment Free Flight Logging *** Get to know your pilot logbook for 350 flight hours or 6 months, whichever is longer, ideal for busy pilots and students alike. *** Features *** Live sync - Included in your free trial and subscription AvionLog keeps all your flying up to date across all your iOS devices. Backup - Our first priority is keeping your logbook data as safe as possible. Featuring automatic in-app backups for day-to-day issues as well as long term cloud backups. Fast flight entry - AvionLog makes entering your flights as fast as possible. Log the way you want with powerful customizations. - Pre-loads airfields based on the last time you operated that route. - Quickly create your next flight, onward or return. - Intuitively find people, airfields and aircraft without leaving the flight log entry. - Set defaults such as: PIC/SIC and aircraft registration. - Automatic day/night takeoff and landing entry. - Automatic night flight time calculation. Track your duties - with the ability to add simulator times, reserves, standbys and non flight related duties. Reports - Pilots have different needs, goals, targets, limits and restrictions. With AvionLog’s comprehensive reports feature you can create just about any report you’ll ever need. - Create PDF logbooks. - Track periodic limits eg. annual flying limits with rolling and limit reports. - Set a target report and predict career milestones. - Generate detailed graphical breakdowns of your experience. All flight reports come with a map feature to show the associated flights on a map. Privacy Policy: https://www.avionlog.com/legal/privacy Terms of Service: https://www.avionlog.com/legal/terms

About

4Pilots

Features
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CREATE AND SHARE UNLIMITED ICAO FLIGHT PLANS Simplify and streamline your flight planning process! In just three simple steps, you can create, share, and send ICAO PDF flight plans: • Fill out the required forms. • Generate the PDF. • Share or email your flight plan. MANAGE ALL YOUR AIRCRAFT IN ONE PLACE Save time by storing all the aircraft you fly in a convenient, organized list. • Add a new aircraft by tapping the “+” icon in the Aircrafts tab. • Required fields are marked for quick, error-free input. • Edit aircraft details, use saved aircraft as templates, or remove entries with simple gestures. TRACK YOUR FLIGHT PLAN HISTORY Keep a historical record of all your flight plans for easy reference and reuse. • Add a new flight plan in the Flight Plans tab by selecting an aircraft and filling in the required details. • Use info icons to clarify field requirements. • Edit, reuse as templates, or delete plans with intuitive swipe gestures. REVIEW AND SEND PDFS WITH EASE After completing your flight plan, click “Finish” in the final section of the form. The app instantly generates an ICAO-compliant flight plan PDF that you can review and send directly to the adequate ATS via email. CUSTOMIZE YOUR EXPERIENCE Head to the Settings tab to personalize your app experience: • Set default pilot information for faster form completion. • Choose between light and dark themes. • Access guides, contact support, and visit our website. Don’t forget to review the Privacy Policy and Terms & Conditions before getting started. PRO FEATURES: EXPAND YOUR CAPABILITIES Unlock advanced tools with the Pro version, designed to enhance your flight planning experience: Unit Conversions Quickly and accurately convert essential aviation units: • Celsius ↔ Fahrenheit • Nautical miles ↔ Statute miles • Nautical miles ↔ Kilometers • Feet ↔ Meters • Pounds ↔ Kilograms • Gallons ↔ Liters • Avgas Gallons ↔ Pounds • Jet A Gallons ↔ Pounds • Millibars ↔ Inches of mercury E6B Flight Computer Perform a comprehensive range of critical flight calculations: • Crosswind, headwind, and tailwind components • Hydroplane speed • Planned true airspeed • Heading and groundspeed • Compass heading • Leg time and fuel required • Required true airspeed • Endurance calculations • Percent MAC (Mean Aerodynamic Chord) • Required rate of climb • Specific range • Actual true airspeed • Groundspeed • Fuel consumption per hour • Distance flown • Top of descent • Required rate of descent • Glide distance Weight and Balance Calculations Ensure safety and compliance with accurate weight and balance tools: • Input your aircraft’s specific weight and balance data. • Calculate center of gravity (CG) positions for various configurations. • Verify compliance with aircraft limitations for optimal performance. Upgrade to Pro to access these powerful features and take your flight planning to new heights! Our Terms of Service can be found here https://4pilots.app/terms-conditions

Screenshots

AvionLog4 screens
4Pilots4 screens

Verdict

The call

The clearest difference is ads: AvionLog at none against 4Pilots's shown. AvionLog also leads on update cadence (every 6 weeks vs every 19 months) and iOS requirement (12.0 vs 15.0). On price, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AvionLog sells 2 in-app purchases, starting at $39.99 per year and 4Pilots sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AvionLog ships an update every 6 weeks, 4Pilots every 19 months. The most recent releases landed on September 13, 2026 and September 11, 2026 respectively.

Scorecard3 real differences · 7 level
AvionLog versus 4Pilots: the parameters behind the verdict, then further details
ParameterAvionLog4Pilots
PriceFreeFree
Rating3.7 (6 ratings) — better—
Positive reviews90.9% of reviews—
Number of ratings6 — better—
Update frequencyEvery 6 weeks — betterEvery 19 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size97 MB47 MB
Age rating4+4+
DeveloperGreen Twin Software LtdMilos Cubrilo

In-app purchases

2 purchases

AvionLog

Subscriptions1
  • AvionLog Yearly Subscription$39.991 Year
One-time1
  • AvionLog Free TrialFree
3 purchases

4Pilots

Subscriptions2
  • Monthly Subscription$1.991 Month
  • Yearly Subscription$17.991 Year
One-time1
  • 4Pilots Pro$24.99

Questions

Is AvionLog free?
AvionLog is free to download, with in-app purchases available.
Is 4Pilots free?
4Pilots is free to download, with in-app purchases available.
Do AvionLog or 4Pilots have ads?
4Pilots shows ads; AvionLog does not.
Which is updated more often, AvionLog or 4Pilots?
AvionLog ships an update every 6 weeks, and 4Pilots every 19 months. Most recently, AvionLog was updated on September 13, 2026 and 4Pilots on September 11, 2026.

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