LivingTo100.com vs OnBody Client
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LivingTo100.com
Estimate your lifespan with a calculator based on extensive medical and scientific research. Developed by the director of the New England Centenarian Study, it uses current data to predict your potential age.
- Life expectancy estimation
- Based on medical data
- Developed by centenarian study director
- Uses scientific research
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Living to 100 Life Expectancy Calculator was designed by Dr Thomas Perls, and uses the most current and carefully researched medical and scientific data in order to estimate how old you will live to be. Thomas Perls MD, MPH is the founder and director of the New England Centenarian Study, the largest study of centenarians and their families in the world. More can be learned about the study at www.bumc.bu.edu/centenarian.
OnBody Client
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The 532, which is a fat meter Bluetooth Smart Body Analyzer, OnBody Client application developed for home use
Screenshots
Verdict
The clearest difference is price: OnBody Client at Free against LivingTo100.com's $4.99. OnBody Client also leads on update cadence (every 5 months vs every 10 months) and iOS requirement (13.0 vs 15.1). On 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
OnBody Client is free to download; LivingTo100.com costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LivingTo100.com ships an update every 10 months, OnBody Client every 5 months. The most recent releases landed on October 23, 2026 and September 30, 2026 respectively.
| Parameter | LivingTo100.com | OnBody Client |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 7.9% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 11 MB |
| Age rating | 12+ | 17+ |
| Developer | Michael Isman | UTA SPOR VE ANTRENMAN SISTEMLERI LIMITED SIRKETI |
Bugs and requests
LivingTo100.com
Reported bugs
3 issues- Inconsistent results between app and website version
- Inability to navigate back or retake the assessment
- Bugs with the smoking question
Requested features
4 requests- Allow multiple user profiles
- Provide more detailed feedback and suggestions
- Add ability to re-take the assessment with different inputs
- Include questions on medical history, medications, and lifestyle factors
OnBody Client
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LivingTo100.com
No in-app purchases
OnBody Client
No in-app purchases
Questions
Is LivingTo100.com free?
Is OnBody Client free?
Do LivingTo100.com or OnBody Client have ads?
Which is updated more often, LivingTo100.com or OnBody Client?
Other comparisons
