Comparison

Charts+ vs ACN/PCN Calculator

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

Head to head
About

Charts+

This app provides pilots with worldwide enroute maps, terminal charts, and a document viewer for airline documentation. It features a search engine, clipboard, and bookmarking for easy access to flight information.

Highlights
  • Worldwide enroute map with polar routes
  • Terminal charts viewer with sketches
  • Document viewer with search engine
  • Clipboard and bookmark function
  • Electronic Flight Bag functionality
Features
Read full description

The next generation of NAVBLUE Charts+ is here. Influenced by Pilots for use in the cockpit, the redesigned Charts+ interface improves on the user experience. NAVBLUE Charts+ gives pilots the ability: - To have a worldwide enroute map with polar route capacities, - To have a terminal charts viewer with sketches, - To have a document viewer to read Charts+ Guide and as well as your airline documentation with a search engine. - A clipboard and bookmark function for charts and document. This new version provides Enroute Charts directly on your iPad turning it into a powerful Electronic Flight Bag. Note: you MUST have a valid NAVBLUE Charts subscription to activate new aerodrome coverage or update your charts. Currently NAVBLUE Charts+ is targeted at NAVBLUE commercial airline customers.

About

ACN/PCN Calculator

This app calculates aircraft pavement classification numbers (PCN) and aircraft classification numbers (ACN) to assess airport pavement strength. It helps pilots and aviation professionals ensure safe operations by verifying aircraft weight limitations on runways, taxiways, and aprons.

Highlights
  • ACN/PCN calculation
  • Pavement strength evaluation
  • Aircraft weight verification
  • ICAO ACN/PCN method
  • Comprehensive aircraft database
  • User-friendly interface
Features
Read full description

ACN/PCN Calculator The Ultimate Pavement Strength Tool for Aviation Professionals The ACN/PCN Calculator is your go-to app for evaluating the bearing strength of airport pavements, designed specifically for pilots, flight operations engineers, dispatchers, and airport operators. Whether you’re dealing with flexible or rigid pavements, this app ensures precise calculations to verify safe operations on runways, taxiways, and aprons. By leveraging the ICAO ACN/PCN method, as outlined in Annex 14 and Document 9157 Part 3, the calculator simplifies complex computations, helping you determine the maximum allowable aircraft weight with confidence. Why Choose the ACN/PCN Calculator? • Comprehensive Aircraft Database: Data is sourced from manufacturers’ publications, including the Aircraft Characteristics for Airport Planning (ACAP) manuals. Where necessary, ICAO-recommended methods or alternative sources ensure accuracy. • User-Friendly Design: Optimized for iPhone 8+ screens and fully compatible with iPads, the interface is intuitive and easy to navigate. Supported Aircraft Models Our extensive database includes popular aircraft from leading manufacturers: A300BeK/B4/B4-600R, A319, A320, A321, A330 (all variants), A340 (all variants), A350 (all variants), A380. B727-200, B737 (all variants), B747-400 (all variants), B747-8/F, B757-200/300, B767 (all variants), B777 (including ER/LR/F variants), B787 (all variants). DHC-8-Q400, Global Express/XRS, G5000, G6000, G7500, CRJ series (100-1000), LearJet (31A/ER, 40, 45, 60/XR), Challenger (300, 350, 604, 605). Cessna Citation II, Bravo, S/II, Encore/Encore+, Jet 3/4, Latitude, Sovereign/Sovereign+, Citation X/XLS+. E170, E195, EMB-120/135, Praetor 600, Phenom 300. G650/ER, G600, G550, G500, G450, G400, G280, G200, GVII-G500/600. An-12, An-124-100/M. ATR 42, ATR 72. Convair CV-580/5800. Falcon: 7X, 50/50EX, 900 (all versions), 2000/2000EX. IL-76T/TD. Beechjet 400 series, Hawker 400XP. Request Additional Aircraft: if you don’t see your aircraft listed, use the Feedback button in the Info tab to request additions.  Aircraft data is regularly updated to meet user needs.

Screenshots

ACN/PCN Calculator4 screens

Verdict

The call

The clearest difference is rating: ACN/PCN Calculator at 4.6 against Charts+'s 1.3. ACN/PCN Calculator also leads on review sentiment (45% vs 6%) and ratings volume (144 vs 13). Charts+'s advantage is in-app purchases (none vs 10) and iOS requirement (12.0 vs 17.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ACN/PCN Calculator sells 10 one-off in-app purchases. Charts+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ACN/PCN Calculator holds the better App Store score, 4.6 against 1.3. That said, the two scores are not equally well evidenced: ACN/PCN Calculator has 144 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 6% of Charts+'s written reviews are positive against 45% of ACN/PCN Calculator's.

UpkeepUpdate frequency

Charts+ ships an update every 5 months, ACN/PCN Calculator every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard7 real differences · 3 level
Charts+ versus ACN/PCN Calculator: the parameters behind the verdict, then further details
ParameterCharts+ACN/PCN Calculator
PriceFreeFree
Rating1.3 (13 ratings)4.6 (144 ratings) — better
Positive reviews5.6% of reviews45.5% of reviews — better
Number of ratings13144 — better
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS12.0 — better17.6
Further details — not scored
Size123 MB4 MB
Age rating4+4+
DeveloperNavblue Inc.AeroKitPro LLC

Customer experience

Charts+

All ratings13 ratings
Positive7.7%
Neutral0.0%
Negative92.3%
Written reviews18 reviews
Positive5.6%
Neutral16.7%
Negative77.8%

ACN/PCN Calculator

All ratings142 ratings
Positive90.1%
Neutral1.4%
Negative8.5%
Written reviews22 reviews
Positive45.5%
Neutral9.1%
Negative45.5%

In-app purchases

None

Charts+

No in-app purchases

10 purchases

ACN/PCN Calculator

One-time10
  • G600 (41.7t)Free
  • G650 (45.3t)$4.99
  • Global 5000 GVFD (42.0t)$4.99
Show 7 more
  • Global 6000 (45.2t)$4.99
  • G650ER (47.1t)$4.99
  • G550 (41.4t)$4.99
  • G450 (33.7t)$4.99
  • G280 (18.0t)$4.99
  • Global 7500 (52.2t)$4.99
  • FALCON 7X (31.8t)$4.99

Questions

Is Charts+ free?
Charts+ is free to download, with no in-app purchases.
Is ACN/PCN Calculator free?
ACN/PCN Calculator is free to download, with in-app purchases available.
Which has better reviews, Charts+ or ACN/PCN Calculator?
ACN/PCN Calculator is rated higher. Charts+ averages 1.3 out of 5 from 13 ratings, while ACN/PCN Calculator averages 4.6 from 144 ratings.
Do Charts+ or ACN/PCN Calculator have ads?
Neither Charts+ nor ACN/PCN Calculator shows ads.
Which is updated more often, Charts+ or ACN/PCN Calculator?
Charts+ ships an update every 5 months, and ACN/PCN Calculator every 2 months. Most recently, Charts+ was updated on November 1, 2026 and ACN/PCN Calculator on November 6, 2026.

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