Comparison

Metric Practice Free vs Cerego

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

Head to head
About

Metric Practice Free

Practice converting between metric prefixes and S.I. units. This app allows you to select units, values, or both to find equivalents. The free version includes novice-level practice for each conversion type.

Highlights
  • Metric prefix conversion practice
  • S.I. unit conversions
  • Selectable units and values
  • Different skill levels
  • Novice level practice included
Features
Read full description

Hone your skills at converting between metric prefixes using S.I. units. The Metric Practice app offers practice in converting between metric prefixes at different skill levels. You can either select the units, the value, or both to determine the equivalent for a given value and unit. The lite version of this app contains only the novice level of each practice type.

About

Cerego

This app offers a personalized learning experience, syncing course content and tracking your progress. It utilizes microlearning principles and smart notifications to help you study efficiently and retain information effectively. Access your learning materials anytime, anywhere, even offline.

Highlights
  • Personalized study recommendations
  • Smart review notifications
  • Progress tracking and analytics
  • Offline study mode
  • Automatic cross-device sync
  • Microlearning approach
Features
Read full description

Cerego mobile is a convenient and easy way to stay on top of your courses and assignments. When you sign into your Cerego account the app will automatically sync all of your course content and display your progress with the material. Studying on mobile is the most efficient, effective way to learn. Study on the go with the Cerego personalized learning app and see 2X better results! Learning science shows that short, frequent interactions known as "microlearning" and timeliness are key predictors of better learning. Improve how you learn and retain what you learn with Cerego at your fingertips. Why you’ll love the mobile app: - Personalized to you, Cerego tells you what to study and when to review - Smart notifications based on your study habits alert you when it’s time to review and ensure you stay on track - Charts your progress across courses and assignments so that you always know where you stand - Provides insights and analytics to highlight your strengths and uncover concepts that need your attention - Syncs your study progress automatically across all of your devices - Offline study mode saves your progress when you are not connected to the internet About Cerego: Cerego is a learning technology company and the creator of a personalized learning platform that helps people learn faster, remember longer and quantify what they know. Our powerful adaptive learning engine is based on thousands of hours of research in the fields of neuroscience, learning theory, and cognitive science are built into the platform to ensure that every course is completely personalized to you based on your activity on the app.

Screenshots

Metric Practice Free2 screens
Cerego3 screens

Verdict

The call

The clearest difference is rating: Cerego at 4.8 against Metric Practice Free's 2.3. Cerego also leads on review sentiment (69% vs 33%) and in-app purchases (none vs 1). Metric Practice Free's advantage is iOS requirement (6.0 vs 12.2). 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. Metric Practice Free sells 1 one-off in-app purchase. Cerego asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Cerego holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: Cerego has 2.1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Metric Practice Free's written reviews are positive against 69% of Cerego's.

UpkeepUpdate frequency

Metric Practice Free ships an update every 7 months, Cerego every 8 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard7 real differences · 3 level
Metric Practice Free versus Cerego: the parameters behind the verdict, then further details
ParameterMetric Practice FreeCerego
PriceFreeFree
Rating2.3 (3 ratings)4.8 (2.1K ratings) — better
Positive reviews33.3% of reviews68.5% of reviews — better
Number of ratings32.1K — better
Update frequencyEvery 7 monthsEvery 8 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better12.2
Further details — not scored
Size12 MB74 MB
Age rating4+4+
DeveloperCarolina Biological SupplyCerego, Inc

Customer experience

Metric Practice Free

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Cerego

All ratings2,011 ratings
Positive96.1%
Neutral1.1%
Negative2.7%
Written reviews143 reviews
Positive68.5%
Neutral4.9%
Negative26.6%

Bugs and requests

Metric Practice Free

Not enough reviews yet to summarise bugs or requests.

Cerego

Reported bugs

5 issues
  • Frequent app crashes
  • Inconsistent reset and review times
  • Blank or unreadable flashcards
  • Compatibility issues with newer iOS versions
  • Syncing problems between app and website

Requested features

5 requests
  • Ability to complete assignments without mandatory breaks
  • Improved syncing between mobile app and website
  • More customization options for study sessions
  • Expanded course and content library
  • Better support for different learning styles

In-app purchases

1 purchases

Metric Practice Free

One-time1
  • Metric Practice Premium Content$1.99
None

Cerego

No in-app purchases

Questions

Is Metric Practice Free free?
Metric Practice Free is free to download, with in-app purchases available.
Is Cerego free?
Cerego is free to download, with no in-app purchases.
Which has better reviews, Metric Practice Free or Cerego?
Cerego is rated higher. Metric Practice Free averages 2.3 out of 5 from 3 ratings, while Cerego averages 4.8 from 2.1K ratings.
Do Metric Practice Free or Cerego have ads?
Neither Metric Practice Free nor Cerego shows ads.
Which is updated more often, Metric Practice Free or Cerego?
Metric Practice Free ships an update every 7 months, and Cerego every 8 days. Most recently, Metric Practice Free was updated on November 1, 2026 and Cerego on November 6, 2026.

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