# Caster App vs Sun Fun Kits BMS

The clearest difference is review sentiment: Caster App at 100% against Sun Fun Kits BMS's 25%. Caster App also leads on rating (4.8 vs 2.8) and iOS requirement (11.0 vs 15.0). Sun Fun Kits BMS's advantage is update cadence (every 4 days vs every 3 weeks). On price, ratings volume, 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.

Caster App holds the better App Store score, 4.8 against 2.8. Both are backed by a comparable volume of ratings — 16 and 11 respectively. Written reviews point the same way: 100% of Caster App's written reviews are positive against 25% of Sun Fun Kits BMS's.

Caster App ships an update every 3 weeks, Sun Fun Kits BMS every 4 days. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Caster App | Sun Fun Kits BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/caster-app/id1438758654/reviews)** | [2.8 (11 ratings)](https://appshunter.io/ios/app/sun-fun-kits-bms/id1600445506/reviews) |
| Number of ratings | **16** | 11 |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | Free |
| Size | 34 MB | 193 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Caster LLC](https://appshunter.io/developer/1438758653) | [sunfunkits](https://appshunter.io/developer/1600445508) |

## What reviewers say

### Caster App

[App page](https://appshunter.io/ios/app/caster-app/id1438758654)

Streamline social event planning and eliminate tedious group texts. Easily organize gatherings, from casual meetups to large festivals, and keep all event details in one accessible place. Connect with friends and family through private groups or discover public communities.

**Highlights:** Streamlined event planning, Eliminates group texts/emails, Syncs with phone contacts, Centralized event logistics, Event information stream, Private and public groups

**Features:** macOS Compatibility

**In-app purchases:** none


### Sun Fun Kits BMS

[App page](https://appshunter.io/ios/app/sun-fun-kits-bms/id1600445506)

Manage your smart batteries and kits effortlessly. View battery health, state of charge, and perform diagnostics. Supports all Sun Fun Kits products and devices using the BLE protocol.

**Highlights:** Manage smart batteries and kits, View battery health, Check state of charge, Perform battery diagnostics, Supports BLE protocol devices

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Caster App free?

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

### Is Sun Fun Kits BMS free?

Sun Fun Kits BMS is free to download, with no in-app purchases.

### Which has better reviews, Caster App or Sun Fun Kits BMS?

Caster App is rated higher. Caster App averages 4.8 out of 5 from 16 ratings, while Sun Fun Kits BMS averages 2.8 from 11 ratings.

### Do Caster App or Sun Fun Kits BMS have ads?

Neither Caster App nor Sun Fun Kits BMS shows ads.

### Which is updated more often, Caster App or Sun Fun Kits BMS?

Caster App ships an update every 3 weeks, and Sun Fun Kits BMS every 4 days. Most recently, Caster App was updated on October 2, 2026 and Sun Fun Kits BMS on October 12, 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.*