Comparison

Subterra TLV vs Permed2

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

Head to head
About

Subterra TLV

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Welcome to the Subterra TLV members app! Download our app to plan and book your fitness classes. At the click of a button, you can view class schedules, sign up for classes and even invite a friend to join you! With the app, youโ€™ll keep in touch with Subterra TLV staff and coaches, receive notifications, news and reminders.

About

Permed2

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Permed2 is a specialized mobile application developed by Tel Aviv University, designed exclusively for participants enrolled in our clinical research studies. Currently, the app hosts the BreastCare research module, serving as a centralized platform for secure data collection, combining subjective user feedback with objective physiological measurements to support advanced medical research. Key Features: - Daily Questionnaires: Easily complete your required daily surveys directly within the app. The app also includes guided instructions for specific study tasks, such as securely taking required clinical photographs as part of the research protocol. - Smartwatch Integration: Pair and sync your smartwatch through the app to log wearing hours and objective physiological data, providing researchers with a complete health picture. - Progress & Rewards: Stay engaged with the study through a built-in reward system. Maintain your daily response "Streaks" and earn "Coins" based on your survey completion rates and smartwatch wearing hours. - Study Information & Resources: Access explanations about the research, read through Frequently Asked Questions (FAQs), and find relevant contact information for the research team and medical center. - Secure & Anonymous: Participant privacy is our top priority. All collected data is synced and stored anonymously and securely, adhering to strict research data protection standards. Medical Disclaimer: This application is intended strictly for research data collection purposes. It does not provide medical diagnoses, medical advice, or treatment. Always consult a qualified healthcare professional for any medical concerns.

Screenshots

Subterra TLV4 screens
Permed24 screens

Verdict

The call

Subterra TLV and Permed2 are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Subterra TLV ships an update every 4 months, Permed2 every 3 months. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

ScorecardNo meaningful differences
Subterra TLV versus Permed2: the parameters behind the verdict, then further details
ParameterSubterra TLVPermed2
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.115.0 โ€” better
Further details โ€” not scored
Size52 MB80 MB
Age rating4+17+
DeveloperArbox LTDTel Aviv University

In-app purchases

None

Subterra TLV

No in-app purchases

None

Permed2

No in-app purchases

Questions

Is Subterra TLV free?
Subterra TLV is free to download, with no in-app purchases.
Is Permed2 free?
Permed2 is free to download, with no in-app purchases.
Do Subterra TLV or Permed2 have ads?
Neither Subterra TLV nor Permed2 shows ads.
Which is updated more often, Subterra TLV or Permed2?
Subterra TLV ships an update every 4 months, and Permed2 every 3 months. Most recently, Subterra TLV was updated on October 28, 2026 and Permed2 on November 5, 2026.

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