Comparison

STI Tx Guide vs WHO RAST

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

Head to head
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.

About

WHO RAST

Features
Read full description

The WHO Biosafety Risk Assessment Tool is a practical application of the Laboratory Biosafety Manual 4th Edition (LBM4). The risk prediction tool allows for rapid analysis of hazards and risks associated with laboratory activities and other research work. The Biosafety RAST is a guide for laboratory staff that provides the user with logical assistance for conducting risk assessments. You can use the Biosafety RAST to: - Identify risks in clinical and public health diagnosis - Assess risk levels for human and animal research - Detect risks with fieldwork - Understand how to gather information on potential hazards - Access recommendations for suitable risk control measures - Save and keep track of completed risk assessments - Download and share a detailed guide for risk management recommendations WHO Biosafety Training: For laboratory personnel who may find biosafety risk assessments daunting or are unsure where to begin, consider this App a learning tool. A quick and easy way to understand the basics of the LBM4 risk assessment framework, and what questions we should be asking to safeguard the public and planet. Easy Access Online/Offline: Perform a risk assessment using just your mobile phone. The App will be accessible both online and offline. Consider Sustainable Safety Measures: The Biosafety RAST will provide you with an initial risk output, summary and further considerations, that will recommend risk management and safety measures suitable for your intended work. The tailored risk outcome will assist users in considering locally sustainable biosafety practices. Keep Track of All your Risk Assessments: All final risk assessments on the App can be bookmarked and saved for later viewing. Bookmarks can be downloaded and shared via email or social media platforms of your choice. This feature is available in your App dashboard. A ‘One-Health’ Approach to Pandemic Preparedness: The App will be available in multiple languages to allow global reach. We hope to expand the number of languages it will be available in. Introducing simple ways to help with conducting risk assessments is a stepping-stone towards better pandemic preparedness in future. We hope this tool will be a useful addition to your risk assessment toolkit and overall biosafety plans. Disclaimer: The WHO Biosafety Risk Assessment Tool simply acts as a guidance, meant to help users understand how to perform risk assessments. It is advised that an in-depth risk assessment as detailed in the LBM4, is also performed in order to suitably implement locally sustainable and feasible control measures.

Screenshots

STI Tx Guide4 screens
WHO RAST4 screens

Verdict

The call

The clearest difference is update cadence: WHO RAST at weekly against STI Tx Guide's every 2 months. WHO RAST also leads on iOS requirement (12.4 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

STI Tx Guide ships an update every 2 months, WHO RAST weekly. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
STI Tx Guide versus WHO RAST: the parameters behind the verdict, then further details
ParameterSTI Tx GuideWHO RAST
PriceFreeFree
Rating3.5 (36 ratings) — better—
Positive reviews35.7% of reviews—
Number of ratings36 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.012.4 — better
Further details — not scored
Size36 MB23 MB
Age rating12+17+
DeveloperCenters For Disease Control and PreventionWorld Health Organization

In-app purchases

None

STI Tx Guide

No in-app purchases

None

WHO RAST

No in-app purchases

Questions

Is STI Tx Guide free?
STI Tx Guide is free to download, with no in-app purchases.
Is WHO RAST free?
WHO RAST is free to download, with no in-app purchases.
Do STI Tx Guide or WHO RAST have ads?
Neither STI Tx Guide nor WHO RAST shows ads.
Which is updated more often, STI Tx Guide or WHO RAST?
STI Tx Guide ships an update every 2 months, and WHO RAST weekly. Most recently, STI Tx Guide was updated on October 23, 2026 and WHO RAST on October 14, 2026.

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