Kondition BLDR vs Seraph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kondition BLDR
Plan and schedule group fitness classes with this mobile application. View class schedules, sign up, check promotions, and find studio contact information. Share your fitness journey on social media and optimize your class booking experience.
- View class schedules
- Sign up for classes
- View promotions
- Studio location and contact
- Social media integration
- Share fitness journey
Read full descriptionHide full description
Download the Kondition App today to plan and schedule your group fitness classes! From this mobile app you can view our class schedules, sign-up for classes, view ongoing promotions and view the studio's location and contact information. You can also click through to our social pages and share your fitness journey! Optimize your time and maximize the convenience of signing up for classes from your device!
Seraph
Read full descriptionHide full description
Seraph estimates how long you might live, and shows you the range around that number instead of a single figure. No lab tests, no bloodwork, no account, no sign-in. You get three things: - A life expectancy: the average age reached by people who answered as you did. - The range around it. Eight in ten outcomes fall between two ages, and that spread is usually wider than people expect. It is the part that actually matters for planning. - A survival curve: your chance of still being alive at each future age. HOW IT WORKS The estimate starts from published US government and actuarial mortality data: Social Security and CDC life tables, and actuarial research on how mortality improves over time. Your answers adjust those baseline rates. WHAT IT IS NOT This is an educational illustration built from population statistics. It is not a prediction of your lifespan, it is not medical advice, and it is not a diagnosis. No model can tell an individual person when they will die. This tool is calibrated to adults aged 40 and older. If you are younger, the app says so on your result and explains what that means. PRIVACY Your answers are used to calculate the estimate on your device and are not saved. We collect anonymous usage data that carries no identifiers, and we do not collect your date of birth. Built by an actuary.
Screenshots
Verdict
The clearest difference is iOS requirement: Kondition BLDR at 16.0 against Seraph's 18.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Kondition BLDR ships an update every 3 weeks, Seraph monthly. The most recent releases landed on October 12, 2026 and October 23, 2026 respectively.
| Parameter | Kondition BLDR | Seraph |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (67 ratings) — better | — |
| Number of ratings | 67 — better | — |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 38 MB | 1 MB |
| Age rating | 4+ | 12+ |
| Developer | Kondition, LLC | Hailcat LLC |
In-app purchases
Kondition BLDR
No in-app purchases
Seraph
No in-app purchases









