# KRAVolution vs Tomorrow.bio

The clearest difference is update cadence: KRAVolution at every 5 weeks against Tomorrow.bio's every 9 months. KRAVolution also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

KRAVolution ships an update every 5 weeks, Tomorrow.bio every 9 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | KRAVolution | Tomorrow.bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tomorrowbio/id1629414020/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | — | Free |
| Size | 11 MB | 40 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [enitiative GmbH](https://appshunter.io/developer/1540424462) | [Tomorrow Biostasis GmbH](https://appshunter.io/developer/1515759869) |

## What reviewers say

### KRAVolution

[App page](https://appshunter.io/ios/app/kravolution/id1540424460)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tomorrow.bio

[App page](https://appshunter.io/ios/app/tomorrowbio/id1629414020)

This app acts as a critical safety net by automatically notifying your designated contacts during emergencies. It utilizes health data from HealthKit, such as heart rate and movement, to monitor your well-being and ensure timely alerts.

**Highlights:** Bio-Time automated alert system, Prompt contact notification, HealthKit API integration, Heart rate monitoring, Movement tracking, Time-based check-ins

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KRAVolution free?

KRAVolution is free to download, with no in-app purchases.

### Is Tomorrow.bio free?

Tomorrow.bio is free to download, with no in-app purchases.

### Do KRAVolution or Tomorrow.bio have ads?

Neither KRAVolution nor Tomorrow.bio shows ads.

### Which is updated more often, KRAVolution or Tomorrow.bio?

KRAVolution ships an update every 5 weeks, and Tomorrow.bio every 9 months. Most recently, KRAVolution was updated on October 27, 2026 and Tomorrow.bio on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*