# Projecta BM500 vs Hy

The clearest difference is review sentiment: Hy at 50% against Projecta BM500's 0%. Hy also leads on update cadence (every 4 weeks vs every 7 months). Projecta BM500's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Projecta BM500 ships an update every 7 months, Hy every 4 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Projecta BM500 | Hy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 24 MB | 94 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [WYBOTICS CO.,LTD](https://appshunter.io/developer/1035099187) |

## What reviewers say

### Projecta BM500

[App page](https://appshunter.io/ios/app/projecta-bm500-bt/id1619339633)

This kit allows users to monitor their battery systems, displaying key information like current, voltage, state of charge, and remaining time. It is compatible with various battery types and voltages, offering accurate measurements for a comprehensive understanding of battery health.

**Highlights:** Real-time current monitoring up to 500A, Supports 12V, 24V, or 48V DC battery systems, Compatible with AGM, GEL, and LFP batteries, Displays voltage, SOC, and time remaining, Accurate current (+/- 0.4%) and voltage (+/- 0.3%) measurements

**In-app purchases:** none


### Hy

[App page](https://appshunter.io/ios/app/hy-clor-robot-cleaners/id6476137607)

Control your robotic pool cleaner remotely. Adjust cleaning modes, schedule cycles, and monitor its status directly from your smartphone. Ensure your pool is always pristine with convenient app management.

**Highlights:** Remote control, Scheduling cleaning cycles, Monitor cleaner status, Adjust cleaning modes, Smartphone management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Projecta BM500 free?

Projecta BM500 is free to download, with no in-app purchases.

### Is Hy free?

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

### Do Projecta BM500 or Hy have ads?

Neither Projecta BM500 nor Hy shows ads.

### Which is updated more often, Projecta BM500 or Hy?

Projecta BM500 ships an update every 7 months, and Hy every 4 weeks. Most recently, Projecta BM500 was updated on October 11, 2026 and Hy on October 24, 2026.

---

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