# A-EFIS Black and White — Fly with your iPhone! > Airplane-specific flight instrument simulator using internal device sensors. (iPhone/iPad app by Charalampos Baltzakis.) - Source: https://appshunter.io/ios/app/a-efis-black-and-white/id993607762 (this page in markdown: same URL + `.md`) - Developer: [Charalampos Baltzakis](https://appshunter.io/developer/1313220759) - Category: Navigation, Utilities - Price: Free - Rating: 4.90/5 from 18 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 12 MB - Languages: American English - Released: 2015-05-26 - Data updated: 2026-06-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/a-efis-black-and-white/id993607762/reviews.md ## What is A? A-EFIS works perfectly with the internal sensors of your iPhone/iPad The only difference of this, free, version with the paid version is that this version is in black and white. A-EFIS makes use of digital filtering methods and state-of-the-art stochastic models in order to achieve exceptional accuracy and robustness. ATTENTION: A-EFIS ONLY WORKS ON AIRPLANES. NOT TO BE USED IN HELICOPTERS OR LAND VEHICLES BECAUSE INDICATIONS WILL NOT BE CORRECT. USE ONLY IN AN AIRPLANE! Features: - Artificial Horizon (AHRS) - Ground speed (via GPS) - Altimeter (via GPS) - Vertical speed (via GPS) - Turn coordinator - Slip ball - Compass - True course indicator (via GPS) - Deviation from true track indication A-EFIS has been extensively tested on ultralights, LSA, general aviation and even airliners. Hint: To use A-EFIS in an airliner, just sit close to a window (in order for the device to be able to receive the GPS signal), put the device in a stable position and press "AHRS calibration" when the aircraft is in leveled flight. You will practically have the same flight data as the pilots in the cockpit! IMPORTANT NOTICE: A-EFIS is not a certified aviation instrument. Do not rely on A-EFIS as your only navigation aid. Failure to comply to this warning may result in property damage, serious injury or death. You assume total responsibility and risk associated with using this application. ## Key features - Artificial Horizon (AHRS) - Ground speed via GPS - Altimeter via GPS - Vertical speed via GPS - Turn coordinator - Slip ball - Compass ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/a-efis-black-and-white/id993607762/reviews.md ### 5/5 — As a pilot, VERY nice! *2025-07-23, version 3.66* In a ATP/CFI and enjoy vintage aircraft as well as teaching, this tool makes it easy to help show bank and pitch in aircraft that don’t have gyros, very well done. My only suggestion is how the altitude and VSI is shown could be made to look like an industry normal tape. But for free, it’s a must have and I feel bad even making a suggestion :) ### 5/5 — Legitimate! *2021-02-22, version 3.56* I am extremely impressed with this application! Only using the free version for now but will be upgrading to the paid subscription the closer I get to finishing building my airplane. I am very thankful to have access to such a precisely formatted AHRS system as an augmentation to my primary flight instruments. Highly recommended! Many thanks to the developer! ### 5/5 — Great App *2020-10-23, version 3.52* Simply the best out there simple and intuitive. Doesn’t try to do too much and does what it does very well. ### 5/5 — Great! *2020-05-02, version 3.52* I have not flown with it yet, but if you think about it, a couple years ago it would cost big bucks to get this capability from Garmin or some of the other guys out there. ### 5/5 — Fantastic app *2019-03-20, version 3.28.2* Used as a backup works well and is ideal for Microlite aircraft ### 5/5 — Amazing app *2019-01-05, version 3.28.2* Can't get over that all this is free! ### 3/5 — Could be good *2018-12-31, version 3.28.2* Tried this in VMC in my Luscombe. Stand-alone mode with no external sensors. Could be useful but even at the lowest settings there is not enough damping. Interesting but not useful. ### 5/5 — Love it! *2018-06-29, version 3.27* Has every thing I need to fly my Quicksilver MX. Groundspeed, altitude, rate of climb, G forces, compass etc. very good app ### 5/5 — Wow *2018-06-24, version 3.27* A must have! Smooth accurate perfect! Now I have to save money for the colourfull version ### 5/5 — Best bang for the buck *2016-03-10* This EFIS system is simply the best bang for the buck for entry level efis,sailplanes,sport planes, experimental and other aircraft. I have used this system for years. It is easy to use,dependable and most important, reliable and accuracy is top notch. I have seen this company develop new software every few months. They don't just initiate a new product;they are always adding new features which makes the flying experience even better.The developer offers this system for free but it's worth it to spend a few bucks and get the color version. Then when your used to the system buying the full efis version with airspeed and barometric altitude is well worth it. You won't find a better price. Spaceman ## Frequently asked questions about A ### What is A-EFIS Black and White? A-EFIS Black and White is a free application that uses your iPhone or iPad's internal sensors to display flight data, such as an artificial horizon, ground speed, and altitude. It is designed exclusively for use in airplanes. ### Does A-EFIS Black and White have ads? No, A-EFIS Black and White does not contain advertisements. The app is completely free to use without any ad interruptions. ### What devices does A-EFIS Black and White support? A-EFIS Black and White is compatible with iPhone, iPad, and iPod devices. It requires iOS 10.0 or later. ### How accurate is A-EFIS Black and White? The app utilizes digital filtering and stochastic models for exceptional accuracy and robustness. It has been tested on various aircraft types, including ultralights, LSAs, general aviation, and airliners. ### Can A-EFIS Black and White be used in helicopters or cars? No, A-EFIS Black and White is strictly for use in airplanes. Indications will not be correct if used in helicopters or land vehicles. ### Is A-EFIS Black and White a certified aviation instrument? No, A-EFIS Black and White is not a certified aviation instrument. It should not be relied upon as your sole navigation aid, and users assume all risks associated with its use. ### How often is A-EFIS Black and White updated? The application was last updated on November 18, 2024, with version 3.66. Updates are released periodically to improve functionality and compatibility. ### What is the age rating for A-EFIS Black and White? A-EFIS Black and White has an age rating of 4+, making it suitable for a wide range of users. The app's content is generally appropriate for children. ## Version history (last 5 releases) ### 3.66 — 2024-11-18 Solves bug in the "Default units" screen. Solves bug in the "Sensor status" screen. ### 3.65 — 2024-09-28 Fixes bug with pressure sensor introduced with IOS 17.4. Fixes communication bug with XPlane 12. Adds option for dark mode. Adds option for fixed portrait/landscape orientation. ### 3.60 — 2024-03-14 Minor interface improvements. Updated airports list. Improved support for the latest IOS features. ### 3.56 — 2021-02-11 Adds option for geodetic GPS altitude vs altitude over Mean Sea Level. The option is located in the "Altimeter settings" screen. ### 3.55 — 2021-01-13 Solves bug when converting negative coordinates. Minor interface enhancements. ## Apps similar to A | App | Rating | Price | Category | | --- | --- | --- | --- | | [AirTrack Classic](https://appshunter.io/ios/app/airtrack-classic/id380647441) | 3.8 (14) | $19.99 | Navigation | | [Airborne Flight Instrument](https://appshunter.io/ios/app/airborne-flight-instrument/id1071898324) | — | $2.99 | Navigation | | [Alt-O-Meter](https://appshunter.io/ios/app/alt-o-meter/id1073846820) | 4.5 (8) | Free | Navigation | | [iEFIS Pro](https://appshunter.io/ios/app/iefis-pro/id1217787841) | 5.0 (2) | Free | Navigation | | [Pilot Display](https://appshunter.io/ios/app/pilot-display/id982944211) | 4.0 (1) | Free | Navigation | | [Horizon Portable Glass Cockpit](https://appshunter.io/ios/app/horizon-portable-glass-cockpit/id1303472835) | 4.4 (8) | Free | Navigation | ## More apps by Charalampos Baltzakis - [A-EFIS Pro](https://appshunter.io/ios/app/a-efis-pro/id977144283) All apps by Charalampos Baltzakis: https://appshunter.io/developer/1313220759 ## Related topics [horizon at 1ba](https://appshunter.io/ios/topics/horizon-at-1ba) · [aeolus](https://appshunter.io/ios/topics/aeolus) · [attitude indicator](https://appshunter.io/ios/topics/attitude-indicator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*