Comparison

Revolution Prep vs SLU SAFE

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

Head to head
About

Revolution Prep

Instantly score your SAT, ACT, or PSAT practice exams by taking a picture of your test. Track your progress with detailed reports and analysis, all stored conveniently in one place. Self-proctor exams with built-in timing and audio cues.

Highlights
  • Instant scoring via phone camera
  • Detailed score reports and analysis
  • Practice exam results storage
  • Self-proctoring with timing and audio cues
  • Progress tracking
Features
Read full description

Self-proctor an exam at home or on-the-go, and score your SAT, ACT, or PSAT exam in a flash. Simply take a picture of your test and instantly get your score! The Revolution Prep app will save all of your score reports, and automatically track your progress in one convenient place. FEATURES: - Instant scoring for your Revolution Prep practice exams with your phone's camera - Detailed score reports and analysis for practice SAT, ACT, and PSAT exams - Practice exam results stored in one place - Self-proctoring with timing and audio cues WHAT'S NEXT? Let us know what other features you'd like to see by emailing us at ios@revolutionprep.com. Love the app? Rate us! Your feedback helps us continue to improve your Revolution Prep experience.

About

SLU SAFE

Read full description

SLU SAFE is the official safety app of Saint Louis University. It is the only app that integrates with Saint Louis University's safety and security systems. The SLU DPS has worked to develop a unique app that provides students, faculty and staff with added safety on the Saint Louis University campus. The app will send you important safety alerts and provide instant access to campus safety resources. SLU SAFE features include: - Emergency Contacts: Contact the correct services for the Saint Louis University area in case of an emergency or a non-emergency concern - Panic Button / Mobile Bluelight: Send your location to Saint Louis University security in real-time in case of a crisis - Friend Walk: Send your location to a friend through email or SMS on your device. Once the friend accepts the Friend Walk request, the user picks their destination and their friend tracks their location in real time; they can keep an eye on them to make sure they make it safely to their destination. - Tip Reporting: Multiple ways to report a safety/security concern directly to Saint Louis University security. - Virtual WalkHome: Allow Campus Security to monitor a user’s walk. If a user feels unsafe when walking on campus, they can request a Virtual WalkHome and a dispatcher on the other end will monitor their journey until they reach their destination. - Safety Toolbox: Enhance your safety with the set of tools provided in one convenient app. - Notification History: Find previous Push Notifications for this app with the date and time. - Share Map with your Location: Send your location to a friend by sending them a map of your position. - I’m OK!: Send your location and a message indicating that “You’re OK” to a recipient of your choosing. - Campus Maps - Campus Map: Navigate around the Saint Louis University area. - Shuttle Tracking: Find transit routes currently in service. - Emergency Plans: Campus emergency documentation that can prepare you for disasters or emergencies. This can be accessed even when users aren’t connected to Wi-Fi or cellular data. - Support Resources: Access support resources in one convenient app to enjoy a successful experience at Saint Louis University. - Safety Notifications: Receive instant notifications and instructions from Saint Louis University safety when on-campus emergencies occur. Download today to ensure you’re prepared in the event of an emergency.

Screenshots

Revolution Prep4 screens
SLU SAFE4 screens

Verdict

The call

The clearest difference is update cadence: Revolution Prep at every 3 months against SLU SAFE's every 21 months. 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

Revolution Prep ships an update every 3 months, SLU SAFE every 21 months. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

Scorecard1 real difference · 9 level
Revolution Prep versus SLU SAFE: the parameters behind the verdict, then further details
ParameterRevolution PrepSLU SAFE
PriceFreeFree
Rating4.6 (499 ratings) — better—
Positive reviews63.2% of reviews—
Number of ratings499 — better—
Update frequencyEvery 3 months — betterEvery 21 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size45 MB31 MB
Age rating4+4+
DeveloperRevolution PrepSaint Louis University

Bugs and requests

Revolution Prep

Reported bugs

5 issues
  • Automatic scoring system is broken and useless.
  • App crashes once a pic is taken to score an exam.
  • Scan feature takes forever to process and gives error messages.
  • App is terrible at grading exams.
  • Scan feature requires multiple attempts to work.

SLU SAFE

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Revolution Prep

No in-app purchases

None

SLU SAFE

No in-app purchases

Questions

Is Revolution Prep free?
Revolution Prep is free to download, with no in-app purchases.
Is SLU SAFE free?
SLU SAFE is free to download, with no in-app purchases.
Do Revolution Prep or SLU SAFE have ads?
Neither Revolution Prep nor SLU SAFE shows ads.
Which is updated more often, Revolution Prep or SLU SAFE?
Revolution Prep ships an update every 3 months, and SLU SAFE every 21 months. Most recently, Revolution Prep was updated on September 23, 2026 and SLU SAFE on September 16, 2026.

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