# Hello Loona vs Big Two Calculator

The clearest difference is price: Hello Loona at Free against Big Two Calculator's $0.99. Hello Loona also leads on update cadence (every 5 weeks vs every 38 months) and iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Hello Loona is free to download; Big Two Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hello Loona ships an update every 5 weeks, Big Two Calculator every 38 months. The most recent releases landed on October 17, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Hello Loona | Big Two Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.2 (233 ratings)](https://appshunter.io/ios/app/hello-loona/id1615527592/reviews)** | — |
| Number of ratings | **233** | — |
| Positive reviews | 62.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 38 months |
| Monetization | Free | — |
| Size | 212 MB | 0 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing KEYi Technology Co., Ltd.](https://appshunter.io/developer/1129134601) | [Leung Kau Chan](https://appshunter.io/developer/1618720188) |

## What reviewers say

### Hello Loona

[App page](https://appshunter.io/ios/app/hello-loona/id1615527592)

Control and program a robotic pet with this app. Explore various scenarios, perform talents, play games, and connect with other users in the community.

**Highlights:** Robot control, Programming software, Talent shows, Play games, Community interaction

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

**In-app purchases:** none

**What reviewers like**

- 🤖 Intelligent AI with ChatGPT integration
- 🎮 Engaging games and interactive features
- 🎨 Creative capabilities like drawing
- 🏃 Autonomous navigation and movement
- 📱 Helpful companion app functionality

**What reviewers complain about**

- 🐛 Frequent app crashes and bugs
- 📱 Poor app UI/UX design
- 🔌 WiFi connectivity issues
- ⚙️ Clunky robot movements
- 🔋 Fast battery drain

**Reported bugs**

- App registration verification code not sending
- Email registration failing
- QR code scanner unable to focus
- WiFi connection timeouts and bad gateway errors
- App forces landscape mode only

**Requested features**

- More games and interactive content
- Spanish language support
- Turkish language support
- Adult-friendly app interface version
- Camera/photo capture feature


### Big Two Calculator

[App page](https://appshunter.io/ios/app/big-two-calculator/id1618720186)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hello Loona free?

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

### Is Big Two Calculator free?

Big Two Calculator costs $0.99, with no in-app purchases.

### Do Hello Loona or Big Two Calculator have ads?

Neither Hello Loona nor Big Two Calculator shows ads.

### Which is updated more often, Hello Loona or Big Two Calculator?

Hello Loona ships an update every 5 weeks, and Big Two Calculator every 38 months. Most recently, Hello Loona was updated on October 17, 2026 and Big Two Calculator on September 25, 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.*