Comparison

WikEM vs STI Tx Guide

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

Head to head
About

WikEM

This app provides a continuously updated wiki and database of emergency medicine knowledge for physicians. Access key information offline for rapid reference during daily practice. An in-app subscription unlocks advanced AI-powered questions, favorites, and history features.

Highlights
  • Emergency medicine knowledge database
  • Continuously updated content
  • Offline access
  • AI-powered questions (subscription)
  • Favorites and history (subscription)
Features
Read full description

WikEM is an online wiki and database of emergency medicine knowledge to assist physicians with their daily practice. The content is continuously updated from WikEM.org allowing for rapid reference of key information. The content is available offline with this mobile application. WikEM is intended for clinicians only and not directly for patients. In app subscription purchases: *The in-app purchase unlocks unlimited natural language questions using our AI and also favorites and history features • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable WikEM terms of use: wikem.org/wiki/WikEM:Terms_of_Use

About

STI Tx Guide

Provides healthcare professionals with up-to-date, evidence-based recommendations for the prevention, diagnosis, and treatment of sexually transmitted infections. Features include clinical care guidance, sexual history resources, and patient materials for effective patient management.

Highlights
  • STI prevention recommendations
  • Diagnosis guidance
  • Treatment protocols
  • Clinical care assistance
  • Sexual history resources
  • Patient management tools
Features
Read full description

The new app offers quick and easy access to streamlined STI prevention, diagnosis, and treatment recommendations. The user-friendly interface includes more clinical care guidance, sexual history resources, patient materials, and other features to assist with patient management. The STI Treatment (Tx) Guidelines mobile app serves as a quick reference guide for doctors and related parties on the identification of and treatment for sexually transmitted diseases (STDs). The full STI Treatment Guidelines (cdc.gov) can be accessed at https://www.cdc.gov/std/treatment-guidelines/default.htm. The guidelines provide current evidence-based prevention, diagnostic and treatment recommendations that replace the 2015 guidance. The recommendations are intended to be a source for clinical guidance. Healthcare providers should always assess patients based on their clinical circumstances and local burden. DISCLAIMER THE MATERIALS EMBODIED IN THIS SOFTWARE IS PROVIDED TO YOU "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE CENTERS FOR DISEASE CONTROL AND PREVENTION (CDC) OR THE UNITED STATES (U.S.) GOVERNMENT BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSE OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR NOT CDC OR THE U.S. GOVERNMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.

Screenshots

WikEM4 screens
STI Tx Guide4 screens

Verdict

The call

The clearest difference is rating: WikEM at 4.8 against STI Tx Guide's 3.5. WikEM also leads on update cadence (every 5 days vs every 2 months) and ratings volume (4.7K vs 36). STI Tx Guide's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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. WikEM sells 10 in-app purchases, starting at $1.99 per month. STI Tx Guide asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

WikEM holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: WikEM has 4.7K ratings behind it against 36, so its average is the more settled of the two. Written reviews point the same way: 54% of WikEM's written reviews are positive against 36% of STI Tx Guide's.

UpkeepUpdate frequency

WikEM ships an update every 5 days, STI Tx Guide every 2 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
WikEM versus STI Tx Guide: the parameters behind the verdict, then further details
ParameterWikEMSTI Tx Guide
PriceFreeFree
Rating4.8 (4.7K ratings) — better3.5 (36 ratings)
Positive reviews54.1% of reviews — better35.7% of reviews
Number of ratings4.7K — better36
Update frequencyEvery 5 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size157 MB36 MB
Age rating17+12+
DeveloperOpenEM FoundationCenters For Disease Control and Prevention

Customer experience

WikEM

All ratings4,693 ratings
Positive96.1%
Neutral1.3%
Negative2.5%
Written reviews133 reviews
Positive54.1%
Neutral7.5%
Negative38.3%

STI Tx Guide

All ratings36 ratings
Positive63.9%
Neutral2.8%
Negative33.3%
Written reviews14 reviews
Positive35.7%
Neutral7.1%
Negative57.1%

Bugs and requests

WikEM

Reported bugs

4 issues
  • Login screen freezes
  • Incompatible with older devices
  • Broken hyperlinks and charts
  • Search function not working as expected

Requested features

4 requests
  • Dark mode support
  • Ability to save favorites and customize the app
  • Improved search functionality
  • Regular content updates

STI Tx Guide

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

WikEM

Subscriptions2
  • WikEM AI Search$1.991 Month
  • Premium Features$4.991 Year
One-time8
  • Personal Notes$0.99
  • Favorites and Lists$5.99
  • History and Favorites$9.99
Show 5 more
  • WikEM Russian Content$29.99
  • WikEM Italian Content$29.99
  • WikEM Polish Content$29.99
  • WikEM Hindi Content$29.99
  • WikEM Turkish Content$29.99
None

STI Tx Guide

No in-app purchases

Questions

Is WikEM free?
WikEM is free to download, with in-app purchases available.
Is STI Tx Guide free?
STI Tx Guide is free to download, with no in-app purchases.
Which has better reviews, WikEM or STI Tx Guide?
WikEM is rated higher. WikEM averages 4.8 out of 5 from 4.7K ratings, while STI Tx Guide averages 3.5 from 36 ratings.
Do WikEM or STI Tx Guide have ads?
Neither WikEM nor STI Tx Guide shows ads.
Which is updated more often, WikEM or STI Tx Guide?
WikEM ships an update every 5 days, and STI Tx Guide every 2 months. Most recently, WikEM was updated on October 13, 2026 and STI Tx Guide on October 8, 2026.

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