# CX-3 Flight Computer — user reviews > 14 indexed App Store user reviews of CX by ASA, rated 3.70/5 from 11 ratings. - Source: https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895/reviews - App overview in markdown: https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895.md - Rating breakdown: 5★ 6 · 4★ 1 · 3★ 1 · 2★ 1 · 1★ 2 ## Most critical reviews (10 lowest-rated) ### 1/5 — Miscalculation *2025-11-12* I was multiplying in the item 3 the weight time arm and result was wrong. ### 1/5 — Double charge *2025-07-14* Charged me twice ### 1/5 — Affiche 24.99 charge 57.46$ *2025-04-02* Why? ### 1/5 — Resets *2024-11-05* The app resets and deletes all parameters when it closes. The developers should adjust it so that settings are saved. ### 1/5 — Bug *2023-12-05* Si on change les unités dans les réglages l’application bug. On ne peut plus rien utiliser dommage ### 1/5 — Super buggy *2023-10-12* Can’t even change base units from us to metric, so useless for anyone outside of the us. I tried pressing set, base u it’s, and changing from us to metric, but entering the selection of metric, then makes the orange enter key no longer works. It also doesn’t enter the change to metric. At this point, the enter key no longer works, forcing you to have to close the program. On re opening, we are back to us base units. I am going to try to get my money back, total garbage. ### 1/5 — Inaccurate *2022-11-16* The website simulator is free, and doesn’t provide wrong numbers :( I had high hopes for this app, as it could’ve been more convenient than going to the website, but having a calculator that doesn’t work is disappointing. Had the same issues as the other review. Until it’s fixed, don’t buy. ### 2/5 — CX3 = Good, App = Buggy *2022-11-15* The CX3 is a good calculator. The web emulator is decent, but this app has some bugs that provide inaccurate calculations. I’ve found a few in the Weight/Balance section and fuel calculation section. An example, the app defaults AvGas to 13lbs instead of 6. I’ve not found a place where I can correct it, so all fuel calculations are wrong. A second example: when calculating the W/B, the total CG just adds the stations together instead of following the formula of CG=M/W. I’m sure there are others. Don’t trust it! It can work as an emulator to practice while you wait (a long time) for your actual CX3 to arrive, but it should not be used in real-life aviation. Also, I have to fully close the app and relaunch it a few time before it will work. I often just get a white screen on load. I’m going to request a refund from Apple. For me, it had proven untrustworthy. ### 3/5 — No menu touch function *2024-10-10* The user can touch the buttons that mimic the buttons on the actual calculator, but when the FLT button is pressed the menu that is launched can only be accessed with up down arrows (just like the actual calculator). Using this on a touch screen device like an iPad is a poor user experience, especially for $9.99. Please update the menus to touch buttons. ### 4/5 — Very Useful Tool *2022-12-20* I use this tool everyday, what’s great is it also works offline unlike the website. If you in aviation school I would definitely recommend buying this app. I only deducted a star because some users say the calculations to be inaccurate but I believe they fixed those issues but I have also never experienced those problems, the app works well for me and I think it will for you too. ## Most praised reviews (4 highest-rated) ### 5/5 — Perfect for my class *2024-03-27* I am teaching PPL ground school. I recommend to all my students the physical ASA CX-3 for the FAA knowledge tests. This app allows me to demonstrate the functions on my iPad, if needed projected to a bigger screen. I find myself even using it at home, when again I cannot remember where I put my physical CX-3. Sure, ASA has the Web demo app, however, it is beneficial to have an app independent of WiFi or cellular access. Well worth a small fee. ### 5/5 — No issues *2023-12-03* I think they’ve fixed the calculation issues with W/B because I haven’t experienced them. ### 5/5 — Great tool *2023-03-15* I use this for my students while their calculator is on order. ### 5/5 — Great app *2022-11-21* App works perfectly, I just wish the app could store flight plan legs in memory so that they could be accessed at a later time. --- *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 2026-09-12.*