# Holyiot vs BoltStar

The clearest difference is in-app purchases: Holyiot at none against BoltStar's 1. Holyiot also leads on iOS requirement (10.0 vs 15.0). BoltStar's advantage is update cadence (monthly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. BoltStar sells 1 one-off in-app purchase. Holyiot asks for nothing beyond the download.

Holyiot ships an update every 3 months, BoltStar monthly. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Holyiot | BoltStar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 28 MB | 30 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Shenzhen Hong yi yun jia technology Co.,LTD](https://appshunter.io/developer/1188616341) | [Boltstar (Shenzhen) New Energy Technology Co., Ltd.](https://appshunter.io/developer/6788200822) |

## What reviewers say

### Holyiot

[App page](https://appshunter.io/ios/app/holyiot-sensor/id6449424647)

**Features:** macOS Compatibility

**In-app purchases:** none


### BoltStar

[App page](https://appshunter.io/ios/app/boltstar/id6789490395)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star 30,000 | $59.99 | one-time |


## Frequently asked questions

### Is Holyiot free?

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

### Is BoltStar free?

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

### Do Holyiot or BoltStar have ads?

Neither Holyiot nor BoltStar shows ads.

### Which is updated more often, Holyiot or BoltStar?

Holyiot ships an update every 3 months, and BoltStar monthly. Most recently, Holyiot was updated on November 7, 2026 and BoltStar on November 10, 2026.

---

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