# Siren vs Florida  Lithium

The clearest difference is update cadence: Florida  Lithium at every 6 weeks against Siren's every 9 months. Florida  Lithium also leads on iOS requirement (11.0 vs 16.0). 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.

Siren ships an update every 9 months, Florida  Lithium every 6 weeks. The most recent releases landed on September 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Siren | Florida  Lithium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/florida-lithium/id6464289243/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 1 MB | 5 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Apple](https://appshunter.io/developer/284417353) | [Shenzhenshi Handexing Technology Co. , Ltd.](https://appshunter.io/developer/1616291924) |

## What reviewers say

### Siren

[App page](https://appshunter.io/ios/app/siren/id1635862301)

**Features:** Apple Watch app

**In-app purchases:** none


### Florida  Lithium

[App page](https://appshunter.io/ios/app/florida-lithium/id6464289243)

Monitor your lithium batteries in real-time with detailed diagnostics and status updates. Receive customizable push notifications for state of charge, voltage, current, temperature, and individual cell voltages.

**Highlights:** Real-time battery diagnostics, State of charge monitoring, Voltage and current tracking, Temperature alerts, Individual cell voltage display, Push notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Siren free?

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

### Is Florida  Lithium free?

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

### Do Siren or Florida  Lithium have ads?

Neither Siren nor Florida  Lithium shows ads.

### Which is updated more often, Siren or Florida  Lithium?

Siren ships an update every 9 months, and Florida  Lithium every 6 weeks. Most recently, Siren was updated on September 20, 2026 and Florida  Lithium on October 5, 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.*