# BioSteer vs Rello

The clearest difference is in-app purchases: BioSteer at none against Rello's 2. BioSteer also leads on update cadence (every 2 weeks vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Rello sells 2 in-app purchases, starting at $2.99 per month. BioSteer asks for nothing beyond the download.

BioSteer ships an update every 2 weeks, Rello monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | BioSteer | Rello |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rello-sleep-vitals-activity/id6480137239/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Freemium |
| Size | 123 MB | 1 MB |
| Requires iOS | **15.5** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Centarix Biotech Ltd.](https://appshunter.io/developer/1667218539) | [Sam Malapas](https://appshunter.io/developer/1738326099) |

## What reviewers say

### BioSteer

[App page](https://appshunter.io/ios/app/biosteer/id1667218537)

**In-app purchases:** none


### Rello

[App page](https://appshunter.io/ios/app/rello-sleep-vitals-activity/id6480137239)

Track your sleep, vitals, and activity to understand how they impact your well-being. Identify personal trends and build healthier habits for a longer, more vibrant life. All your health data remains private and on your device.

**Highlights:** Sleep tracking and analysis, Vitals monitoring, Activity and workout tracking, Personalized trend identification, On-device data privacy, Goal achievement monitoring

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription (Monthly) | $2.99 | per month |
| Subscription (Yearly) | $24.99 | per year |


## Frequently asked questions

### Is BioSteer free?

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

### Is Rello free?

Rello is free to download, with in-app purchases available.

### Do BioSteer or Rello have ads?

Neither BioSteer nor Rello shows ads.

### Which is updated more often, BioSteer or Rello?

BioSteer ships an update every 2 weeks, and Rello monthly. Most recently, BioSteer was updated on November 3, 2026 and Rello on November 4, 2026.

---

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