# Rivnly vs Sierro

The clearest difference is update cadence: Sierro at every 4 days against Rivnly's every 3 weeks. Sierro also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

Rivnly ships an update every 3 weeks, Sierro every 4 days. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Rivnly | Sierro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/sierro/id6808530922/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Free |
| Size | 12 MB | 7 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brian McLaughlin](https://appshunter.io/developer/1834240879) | [Sierro Intelligent Technology Co., Ltd](https://appshunter.io/developer/6808530924) |

## What reviewers say

### Rivnly

[App page](https://appshunter.io/ios/app/rivnly/id6775630618)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sierro

[App page](https://appshunter.io/ios/app/sierro/id6808530922)

Monitor and manage your home energy storage system. View battery status, solar generation, and power flow. Receive alerts for power outages and low battery levels to stay informed.

**Highlights:** Monitor battery status, View solar generation, Track power flow, Receive device alerts, Get outage notifications, Low battery alerts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rivnly free?

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

### Is Sierro free?

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

### Do Rivnly or Sierro have ads?

Neither Rivnly nor Sierro shows ads.

### Which is updated more often, Rivnly or Sierro?

Rivnly ships an update every 3 weeks, and Sierro every 4 days. Most recently, Rivnly was updated on October 7, 2026 and Sierro on October 22, 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.*