Comparison

Functional Groups vs Off The Devices

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

Head to head
About

Functional Groups

Master organic chemistry functional groups through an engaging and interactive learning experience. Ideal for students in introductory or advanced courses, MCAT prep, and A-Level chemistry, this app covers dozens of essential groups with practice modes and progress tracking.

Highlights
  • 25+ basic and advanced functional groups
  • 300+ organic compounds
  • Multiple practice modes
  • Customizable study groups
  • Personalized review
  • Reference table and definitions
  • Progress tracking with achievements
Features
Read full description

Ready to ace organic chemistry? Learn the functional groups you need to know - all in an engaging and interactive format. The app is ideal for introductory or advanced organic chemistry classes, MCAT prep, A-Level chemistry, and more. You’ll quickly become familiar with alcohols, esters, amides, amines, and dozens of other important functional groups. The app features: • 25+ basic and advanced functional groups • 300+ organic compounds • Multiple practice modes • Customize which groups to study • Personalized review • Reference table and definitions • Achievements to track your progress Along the way, you’ll learn interesting facts about pharmaceuticals, biomolecules, dangerous compounds, unique molecular structures, and more. With the Functional Groups app, learning organic chemistry is easy, straightforward, and, dare we say… fun? Give it a try and let us know what you think!

About

Off The Devices

This app helps schools manage student device usage during school hours. It uses geofencing and school Wi-Fi to remind students to power down or enable 'school mode' on their devices. Administrators can track student compliance and send notifications.

Highlights
  • Student device compliance tracking
  • Geofencing for school zones
  • School Wi-Fi integration
  • Administrator notifications
  • School Mode activation
  • Student reporting
Features
Read full description

Cell phones, smartwatches, and earbuds are taking over our schools. The cost of addiction to social media and unrestricted access to the internet in schools remains unknown. Social Scientists are just beginning to study the effects of this profound societal issue. Currently, we know unrestricted use of cellphones in schools has an adverse impact on learning, socialization with peers and student mental health. School teachers and administrators are frustrated with the constant policing of smartphones. The Off the Devices app.provides schools with a systematic approach to teaching students responsible use of smart devices in school. The OTD system requires every student who brings a cell phone or smart watch to school to download the OTD application on their personal device. The OTD system uses Geofencing, the school WIFI and direct messages from school administrators to remind students to use school mode or power down their device. The school administrator dashboard shows which students took action and placed the devices in school mode. Students who did not respond receive additional notifications as necessary. The OTD application is required to be turned on and in use for each student as they start the school day. As students enter the school building, the application is installed on the students phone and running in the background. School WIFI, Geofencing or direct notification from school administration will trigger a visual and audible notification for students to power down the device or go into School Mode (airplane mode). Students can show staff as they enter the building or the classroom they are using the application and their phone is in school mode (airplane mode) or powered off. Students are expected to keep the application open and their devices powered off or in School Mode (airplane mode) from the opening bell in the morning to the final bell in the afternoon. The school may send notifications through the application periodically during the school day to monitor student compliance. Students who fail to comply with the policy will be referred to the school administration as per the school code of conduct. As students exit the school building, the device will no longer be connected to wifi or Geofencing and the application will shut down. The student can then turn off school mode (airplane mode) or power up the device. Students must sign up for the application using their first and last name, school email address and name of their school.

Screenshots

Functional Groups4 screens
Off The Devices4 screens

Verdict

The call

The clearest difference is in-app purchases: Off The Devices at none against Functional Groups's 1. Off The Devices also leads on update cadence (every 9 days vs every 4 months). Functional Groups's advantage is ratings volume (21 vs 4). On price, rating, 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. Functional Groups sells 1 one-off in-app purchase. Off The Devices asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Functional Groups against 5.0 for Off The Devices. That said, the two scores are not equally well evidenced: Functional Groups has 21 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Functional Groups ships an update every 4 months, Off The Devices every 9 days. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Functional Groups versus Off The Devices: the parameters behind the verdict, then further details
ParameterFunctional GroupsOff The Devices
PriceFreeFree
Rating4.9 (21 ratings)5.0 (4 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings21 — better4
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size17 MB28 MB
Age rating4+4+
DeveloperClarity ApplicationsDMB Equipment LLC

Customer experience

Functional Groups

All ratings21 ratings
Positive95.2%
Neutral4.8%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Off The Devices

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Functional Groups

One-time1
  • Lifetime Access$9.99
None

Off The Devices

No in-app purchases

Questions

Is Functional Groups free?
Functional Groups is free to download, with in-app purchases available.
Is Off The Devices free?
Off The Devices is free to download, with no in-app purchases.
Which has better reviews, Functional Groups or Off The Devices?
Off The Devices is rated higher. Functional Groups averages 4.9 out of 5 from 21 ratings, while Off The Devices averages 5.0 from 4 ratings.
Do Functional Groups or Off The Devices have ads?
Neither Functional Groups nor Off The Devices shows ads.
Which is updated more often, Functional Groups or Off The Devices?
Functional Groups ships an update every 4 months, and Off The Devices every 9 days. Most recently, Functional Groups was updated on October 11, 2026 and Off The Devices on October 10, 2026.

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