Comparison

Sterile Processing vs Surgical Instrument Learning

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

Head to head
About

Sterile Processing

Prepare for the CRCST exam with practice questions, instrument identification drills, and study guides. Plan your study routine, track progress, and review core sterile processing topics. Offers a free experience with optional monthly, annual, or lifetime subscriptions for full access.

Highlights
  • 320 practice questions
  • Instrument identification drill
  • Daily study tasks
  • Five study guides
  • 24 flashcards
  • Progress tracking
Features
Read full description

Build a focused study routine for the CRCST exam with Sterile Prep. PRACTICE AND UNDERSTAND Work through 320 practice questions covering sterile processing topics. Review answer explanations, bookmark questions and return to your saved practice session. LEARN YOUR INSTRUMENTS Use the interactive instrument-identification drill to review surgical instruments and their uses. PLAN YOUR STUDY Set an exam date, follow daily study tasks and review progress across the app's study areas. These indicators reflect your in-app activity, not a predicted exam score. REVIEW THE FUNDAMENTALS Explore five study guides and 24 flashcards covering core sterile processing topics. Use the wrapping guide, tray assembly checklists and sterilization reference as educational aids. CHOOSE YOUR ACCESS Try the free experience before purchasing Pro. Monthly and annual subscriptions and a lifetime purchase are offered in the app. Apple displays your local price and any eligible introductory offer before you confirm. Subscriptions renew automatically unless canceled through your Apple Account. Restore eligible purchases from Settings. This release focuses on CRCST study. It does not provide separate CIS, CER, CSIS or CSPDT question banks. Study questions, instrument names and reference material are in English; selected app controls also support Spanish. EDUCATION ONLY This app is an independent study aid, not clinical guidance, a sterilizer controller or a validated quality-management system. Always follow the device manufacturer's current instructions for use and your facility's policies. It is not affiliated with or endorsed by HSPA, CBSPD, AAMI or any healthcare facility. CRCST is a trademark of HSPA. No exam result is guaranteed. Support: https://www.voltexam.com/support Privacy: https://www.voltexam.com/privacy Terms: https://www.voltexam.com/terms

About

Surgical Instrument Learning

Master surgical instruments with flashcards and exams based on real photographs. Practice identifying instruments for specific surgeries and trays, track your progress, and even add custom instruments. Pro members get access to interactive 3D models.

Highlights
  • 3,300+ instruments with photos
  • Flashcards, practice tests, timed exams
  • 3D instrument models (Pro)
  • Tray and surgery practice
  • Progress tracking
  • Custom instrument addition
  • Instrument of the Day
Features
Read full description

Learn every surgical instrument by sight, then prove it under exam conditions. Built for surgical technologists, scrub techs and students who have to name an instrument the moment it's asked for. Every question comes from a real photograph, so you study the way you're tested in the field. WHAT'S INSIDE: 3,300+ instruments with photographs, uses and the details that matter at the back table. Flashcards, practice tests and timed exams by class or specialty. Pro members can turn, zoom and open real 3D models, and every instrument page now shows sizes, care and reprocessing, and the trays or sets it belongs to. Look-alike drills for the pairs that actually cost people points. An Instrument of the Day to keep your eye sharp. Read aloud on any name. EVERY TRAY AND SURGERY: Practice all 31 standard trays and build each one from memory by spotting which instruments are missing. The instruments for 280+ surgeries are here too, ready to practice. KNOW WHERE YOU STAND: Progress tracks every instrument you've met, solid, still learning, or never seen. BUILD YOUR OWN: Add your own instruments and setup lists for what your facility actually runs. ONE SUBSCRIPTION: CSTSetup Pro works here, in CSTSetup, and on cstsetup.com.

Screenshots

Sterile Processing4 screens
Surgical Instrument Learning4 screens

Verdict

The call

The clearest difference is update cadence: Surgical Instrument Learning at every 4 days against Sterile Processing's every 4 months. Surgical Instrument Learning also leads on rating (5.0 vs 4.8). On price, ratings volume, ads and in-app purchases 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. Sterile Processing sells 3 in-app purchases, starting at $9.99 per month and Surgical Instrument Learning sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Surgical Instrument Learning holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Sterile Processing ships an update every 4 months, Surgical Instrument Learning every 4 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Sterile Processing versus Surgical Instrument Learning: the parameters behind the verdict, then further details
ParameterSterile ProcessingSurgical Instrument Learning
PriceFreeFree
Rating4.8 (4 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings4 — better2
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS17.016.4 — better
Further details — not scored
Size8 MB61 MB
Age rating4+4+
DeveloperDeeun Inc.CSTSetup

Customer experience

Sterile Processing

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Surgical Instrument Learning

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Sterile Processing

Subscriptions2
  • Pro - Monthly3 Days trial$9.991 Month
  • Prep Pro Annual$29.991 Year
One-time1
  • Pro - Lifetime Access$59.99
2 purchases

Surgical Instrument Learning

Subscriptions2
  • CSTSetup Monthly Pro$12.991 Month
  • CSTSetup Yearly Pro$155.991 Year

Questions

Is Sterile Processing free?
Sterile Processing is free to download, with in-app purchases available.
Is Surgical Instrument Learning free?
Surgical Instrument Learning is free to download, with in-app purchases available.
Which has better reviews, Sterile Processing or Surgical Instrument Learning?
Surgical Instrument Learning is rated higher. Sterile Processing averages 4.8 out of 5 from 4 ratings, while Surgical Instrument Learning averages 5.0 from 2 ratings.
Do Sterile Processing or Surgical Instrument Learning have ads?
Neither Sterile Processing nor Surgical Instrument Learning shows ads.
Which is updated more often, Sterile Processing or Surgical Instrument Learning?
Sterile Processing ships an update every 4 months, and Surgical Instrument Learning every 4 days. Most recently, Sterile Processing was updated on November 9, 2026 and Surgical Instrument Learning on October 31, 2026.

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