# Laifen vs Birthday Countdown

The clearest difference is in-app purchases: Laifen at none against Birthday Countdown's 1. Laifen also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Birthday Countdown sells 1 one-off in-app purchase. Laifen asks for nothing beyond the download.

Laifen ships an update every 3 weeks, Birthday Countdown every 5 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Laifen | Birthday Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (79 ratings)](https://appshunter.io/ios/app/laifen/id6463205325/reviews)** | — |
| Number of ratings | **79** | — |
| Positive reviews | 28.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | — |
| Size | 160 MB | 37 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Shuye Innovation Technology Co., Ltd.](https://appshunter.io/developer/1704141324) | [Ajaysinh Jadeja](https://appshunter.io/developer/1526988451) |

## What reviewers say

### Laifen

[App page](https://appshunter.io/ios/app/laifen/id6463205325)

Connect to your smart electric toothbrush to personalize your brushing experience. Set usage preferences and adjust device parameters to create custom modes for optimal oral health.

**Highlights:** Connect to Laifen electric toothbrush, Set personal usage preferences, Adjust hardware device parameters, Create custom toothbrush modes, Achieve optimal oral health

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

**In-app purchases:** none

**What reviewers like**

- ⚡ Quick device pairing and connection
- 🎛️ Customizable toothbrush settings (strength, frequency, oscillations)
- 🔄 Real-time setting synchronization with device
- 🦷 High-quality toothbrush hardware and materials
- 📦 Excellent packaging and product design

**What reviewers complain about**

- 🐛 Verification code not sent via SMS or email
- 🔐 Mandatory login requirement for app access
- 📱 Missing text/labels in app interface
- 🔌 App connectivity issues with toothbrush
- 💾 Data persistence problems (settings not saved)

**Reported bugs**

- Verification code never arrives via phone or email
- Get Code button permanently greyed out
- Server returns incorrect data errors
- Request timeout errors during account creation
- App shows blank screens with no text labels

**Requested features**

- Apple Health integration and sync
- Battery percentage display
- Dark mode option
- Brushing timer in app
- Real-time brushing feedback and notifications


### Birthday Countdown

[App page](https://appshunter.io/ios/app/birthday-countdown-reminder/id6799158940)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Laifen free?

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

### Is Birthday Countdown free?

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

### Do Laifen or Birthday Countdown have ads?

Birthday Countdown shows ads; Laifen does not.

### Which is updated more often, Laifen or Birthday Countdown?

Laifen ships an update every 3 weeks, and Birthday Countdown every 5 weeks. Most recently, Laifen was updated on October 25, 2026 and Birthday Countdown 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.*