Comparison

TowerOfLondon vs AnSo

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

Head to head
About

TowerOfLondon

Features
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Neuropsychological executive test for use in assessment of cognitive functions. Based on test published by Prof Tim Shallice in 1982 (with alternative version of Culbertson & Zillmert 1998 included). Adaptation of the principles of the Tower of Hanoi. Scoring is automated, but qualitative features can be observed, and individual items redone if participant makes and error (each will be scored but marked as a subsequent attempt). Scores time to first move, total time, and other measures regarded as important in the literature. After testing, can display results, and save as pdf/xls files and share these. The xls files are useful for research purposes.

About

AnSo

This app helps anesthesiologists quickly identify sonoanatomy for various procedures. It offers detailed images, landmark sketches, and innervation data for nerve blocks, along with tips from experienced clinicians. It covers regional anesthesia and other perioperative ultrasound uses.

Highlights
  • Sonoanatomy identification
  • Landmark sketches
  • Nerve block innervation
  • Ergonomic positioning guides
  • Perioperative ultrasound uses
  • Clinical tips and notes
Features
Currently charting
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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.

Screenshots

TowerOfLondon4 screens
AnSo4 screens

Verdict

The call

The clearest difference is price: AnSo at Free against TowerOfLondon's $9.99. AnSo also leads on update cadence (fortnightly vs every 38 months) and chart position (#106 vs unranked). TowerOfLondon's advantage is in-app purchases (none vs 4). On 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

AnSo is free to download; TowerOfLondon costs $9.99 up front. AnSo sells 4 in-app purchases, starting at $0.49 per month. TowerOfLondon asks for nothing beyond the download.

UpkeepUpdate frequency

TowerOfLondon ships an update every 38 months, AnSo fortnightly. Both last shipped on November 7, 2026.

Scorecard5 real differences · 6 level
TowerOfLondon versus AnSo: the parameters behind the verdict, then further details
ParameterTowerOfLondonAnSo
Price$9.99Free — better
Rating—3.6 (32 ratings) — better
Positive reviews—40.4% of reviews
Number of ratings—32 — better
Update frequencyEvery 38 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
Best chart rank—#106 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size5 MB72 MB
Age rating12+17+
DeveloperCereScape Pty LtdSumo Enterprises Pty Ltd

In-app purchases

None

TowerOfLondon

No in-app purchases

4 purchases

AnSo

Subscriptions4
  • AnSo one month subscription14 Days trial$0.491 Month
  • AnSo Pro one year subscription1 Month trial$5.991 Year
  • AnSo Pro subscription1 Year trial$5.991 Year
Show 1 more
  • AnSo one year subscription14 Days trial$5.991 Year

Questions

Is TowerOfLondon free?
TowerOfLondon costs $9.99, with no in-app purchases.
Is AnSo free?
AnSo is free to download, with in-app purchases available.
Do TowerOfLondon or AnSo have ads?
Neither TowerOfLondon nor AnSo shows ads.
Which is updated more often, TowerOfLondon or AnSo?
TowerOfLondon ships an update every 38 months, and AnSo fortnightly. Most recently, TowerOfLondon was updated on November 7, 2026 and AnSo on November 7, 2026.

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