AnSo is a convenient resource designed to help anaesthetists identify common sonoanatomy, in a time efficient manner, within the busy operating theatre. It has been created by practicing anaesthetists with an interest in teaching ultrasound and regional anaesthesia.
Please note that a subscription is required to access all content for this app. You can purchase a monthly or yearly subscription after signing in.
AnSo:
- provides multiple examples of the sonoanatomy as every individual is different,
- provides landmark sketches useful for developing pattern recognition of landmark structures, and for trainees to draw in exams,
- displays the cutaneous, motor, osseous and visceral innervation of the numerous nerve blocks and fascial plane blocks now available, facilitating appropriate block choice and knowledge of expected results,
- allows combining and comparing block innervation,
- allows images to be flipped to display both L and R sided orientation,
- demonstrates functional ergonomics with patient, ultrasound screen and proceduralist positioning essential for efficient practical performance,
- provides block notes with sonoanatomy tips and practical tips from experienced clinicians which can be invaluable to the learner.
AnSo is not only for regional anaesthesia but includes many other perioperative uses of ultrasound relevant to the anaesthetist, such as:
- airway
- gastric antrum
- vascular access
- spine
- transthoracic echo
- lung signs
AnSo contains:
- over 250 ultrasound images with over 1500 sonoanatomy colour overlays,
- innervation images,
- ergonomic images,
- landmarks pattern sketches,
- loops when required for dynamic sonoanatomy,
- notes with tips from experienced clinicians.
AnSo helps identify not only the target structures but all the surrounding sonoanatomy. This more comprehensive understanding of the sonoanatomy helps detect anatomical variability, improves the safety and efficacy of procedures, and facilitates learning and teaching.
AnSo has been designed in a format that can be easily updated and distributed to users so the information can be kept as current as possible in this rapidly expanding field.
AnSo does not require an internet connection to run. Once downloaded all data is stored on your device so it will work anywhere and images will display without any delay. It can be useful both in and out of theatre, when performing procedures, and when learning or teaching ultrasound. There is no advertising in the app making it pleasant and time efficient to use.
Terms of use can be found at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Download AnSo today and always have access to this sonoanatomy and nerve block resource.
Love this app when it works. Everytime you use it, it has to log you in. I have a very poor internet connection at my facility which makes this app unreliable. You should be able to use this app w/o needing to be connected, would give 5 star rating if this was the case.
Developer Response
Hi kbmountain, Thanks for taking the time to write a review.Please make sure you have the latest version. The app should work without an internet connection, with wifi off, or even in flight mode. If you leave the app running in the background it should reopen immediately. If you just close the app and do not sign out it should reopen within a couple of seconds. You should only have to sign in again if you sign out of the app. We have had a few technical issues over the first few months this year. They should all now be fixed.If you continue to have trouble please email us at ansomf@gmail.com so we can help further.kind regardsAnSo
Can’t log in!!!!!!
Nikkiisawesome
I have a subscription and can no longer log in. I have an Apple Pro 17. It only gives me the option to login with my Apple ID when I do it says login failed every time there’s no way to reset a password or access the app in anyway shape or form I’m pretty upset because I use this app pretty regularly. I’d give it five stars, but I just can’t because I can’t get into it anymore. I’ve reached out to the app company multiple times and have yet to receive a response to rectify this.
App Issues
AG221-5
I am really impressed not only with this app and recommend it to all my trainees, but in addition when I had a problem with login Mark quickly worked to fix the problem and was very responsive. Good people, great product.
Most recent update February 2026
Slyguy13
Unfortunately seems like the app is broke again with this recent update. Missing files on every single block. I love this app so I’m hopeful a fix is coming soon!Update: fixed! Works perfectly.
Developer Response
Hi Slyguy13, Sorry the app is letting you down currently. We are aware of the widespread problem. Our coders have been working hard to identify the cause and develop a fix. The fix is currently undergoing testing. Hopefully they will finish testing today/tomorrow and then it gets submitted to Apple and Google for review ( usually this takes another 24 hours), then released into the stores in a staged manner. So bottom line is if you have missing content problems the fix is probably still 2-3 days away. If you have a different problem please email us at ansomf@gmail.com. Sorry for the inconvenience this is causing you. Thanks for your patience while we get a fix to you. Kind regards AnSo
- Better local caching to improve start up times
- Fixed image positioning on tablets
- Layout improvements for smaller screens
- Added ability save debug logs
Version 2.3.6
The developer, Sumo Enterprises Pty Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Sumo Enterprises Pty Ltd
Size
76.5 MB
Category
Medical
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
