# ESP RainMaker Classic vs Grozziie

The clearest difference is rating: ESP RainMaker Classic at 4.4 against Grozziie's 3.4. ESP RainMaker Classic also leads on monetization model (free vs free with in-app purchases) and review sentiment (30% vs 9%). Grozziie's advantage is chart position (#178 vs unranked). On price, ratings volume, update cadence and ads there is nothing between them.

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

ESP RainMaker Classic holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 12 and 11 respectively. Written reviews point the same way: 30% of ESP RainMaker Classic's written reviews are positive against 9% of Grozziie's.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 13, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ESP RainMaker Classic | Grozziie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (12 ratings)](https://appshunter.io/ios/app/esp-rainmaker-classic/id1497491540/reviews)** | [3.4 (11 ratings)](https://appshunter.io/ios/app/grozziie/id6476171035/reviews) |
| Number of ratings | **12** | 11 |
| Positive reviews | **30.0% of reviews** | 9.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#178** |
| Size | 58 MB | 396 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.](https://appshunter.io/developer/1071176699) | [耿 张](https://appshunter.io/developer/1687598404) |

## What reviewers say

### ESP RainMaker Classic

[App page](https://appshunter.io/ios/app/esp-rainmaker-classic/id1497491540)

This platform allows developers to quickly realize ideas using ESP32/ESP32-S2 hardware. It facilitates account sign-up, device provisioning, and control, with an automatically rendered UI based on firmware descriptions.

**Highlights:** ESP32/ESP32-S2 integration, Account sign-up, Device provisioning, Device control and management, Auto-rendered UI, Firmware description integration

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

**In-app purchases:** none


### Grozziie

[App page](https://appshunter.io/ios/app/grozziie/id6476171035)

**Currently charting:** #178 Top Free · Developer Tools (US App Store)

This app simplifies printing from your iOS device to Bluetooth-enabled printers. It supports various file formats, offers label design tools, and provides direct wireless printing with a user-friendly interface and print preview.

**Highlights:** Bluetooth direct printing, Label design tools, Multi-format document printing, Print preview, Print history management, User-friendly interface

**Features:** macOS Compatibility, SharePlay

**In-app purchases:** none


## Frequently asked questions

### Is ESP RainMaker Classic free?

ESP RainMaker Classic is free to download, with no in-app purchases.

### Is Grozziie free?

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

### Which has better reviews, ESP RainMaker Classic or Grozziie?

ESP RainMaker Classic is rated higher. ESP RainMaker Classic averages 4.4 out of 5 from 12 ratings, while Grozziie averages 3.4 from 11 ratings.

### Do ESP RainMaker Classic or Grozziie have ads?

Neither ESP RainMaker Classic nor Grozziie shows ads.

### Which is updated more often, ESP RainMaker Classic or Grozziie?

ESP RainMaker Classic ships an update every 5 weeks, and Grozziie every 5 weeks. Most recently, ESP RainMaker Classic was updated on October 13, 2026 and Grozziie on October 18, 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.*