Comparison

Dermapenworld vs AnSo

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

Head to head
About

Dermapenworld

This application connects your Dermapen device to your clinic. It allows for firmware updates to ensure your device operates with the latest technology.

Highlights
  • Register Dermapen device
  • Clinic registration
  • Firmware updates
  • Latest technology integration
  • Device operation optimization
Features
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This Dermapenworld App registers your Dermapen device to your clinic and enables firmware updates to keep your device operating with the latest technology.

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

Dermapenworld4 screens
AnSo4 screens

Verdict

The call

The clearest difference is rating: Dermapenworld at 5.0 against AnSo's 3.5. Dermapenworld also leads on in-app purchases (none vs 4). AnSo's advantage is review sentiment (39% vs 0%) and update cadence (fortnightly vs every 2 months). 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. AnSo sells 4 in-app purchases, starting at $0.49 per month. Dermapenworld asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dermapenworld holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: AnSo has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 0% of Dermapenworld's written reviews are positive against 39% of AnSo's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Dermapenworld ships an update every 2 months, AnSo fortnightly. The most recent releases landed on September 18, 2026 and October 1, 2026 respectively.

Scorecard8 real differences · 3 level
Dermapenworld versus AnSo: the parameters behind the verdict, then further details
ParameterDermapenworldAnSo
PriceFreeFree
Rating5.0 (2 ratings) — better3.5 (30 ratings)
Positive reviews0.0% of reviews39.1% of reviews — better
Number of ratings230 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Best chart rank—#93 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size34 MB72 MB
Age rating4+17+
DeveloperDermapenWorldSumo Enterprises Pty Ltd

Customer experience

Dermapenworld

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

AnSo

All ratings30 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews46 reviews
Positive39.1%
Neutral6.5%
Negative54.3%

In-app purchases

None

Dermapenworld

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 Dermapenworld free?
Dermapenworld is free to download, with no in-app purchases.
Is AnSo free?
AnSo is free to download, with in-app purchases available.
Which has better reviews, Dermapenworld or AnSo?
Dermapenworld is rated higher. Dermapenworld averages 5.0 out of 5 from 2 ratings, while AnSo averages 3.5 from 30 ratings.
Do Dermapenworld or AnSo have ads?
Neither Dermapenworld nor AnSo shows ads.
Which is updated more often, Dermapenworld or AnSo?
Dermapenworld ships an update every 2 months, and AnSo fortnightly. Most recently, Dermapenworld was updated on September 18, 2026 and AnSo on October 1, 2026.

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