# Nixie Clocks vs Flip Clock

The clearest difference is in-app purchases: Nixie Clocks at none against Flip Clock's 1. Nixie Clocks also leads on ratings volume (107 vs 28) and iOS requirement (15.0 vs 17.0). Flip Clock's advantage is update cadence (every 2 weeks vs every 4 months) and review sentiment (100% vs 73%). On price, ads and device support there is nothing between them.

Both are free to download. Flip Clock sells 1 one-off in-app purchase. Nixie Clocks asks for nothing beyond the download.

Flip Clock holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 107 and 28 respectively. Written reviews point the same way: 73% of Nixie Clocks's written reviews are positive against 100% of Flip Clock's.

Nixie Clocks ships an update every 4 months, Flip Clock every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Nixie Clocks | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (107 ratings)](https://appshunter.io/ios/app/nixie-clocks/id1340858489/reviews) | **[5.0 (28 ratings)](https://appshunter.io/ios/app/flip-clock-calm-desk-timer/id6443838087/reviews)** |
| Number of ratings | **107** | 28 |
| Positive reviews | 73.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 12 MB | 55 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, Mac |
| Age rating | 9+ | 4+ |
| Developer | [ljezny](https://appshunter.io/developer/557198537) | [通 张](https://appshunter.io/developer/1330936821) |

## What reviewers say

### Nixie Clocks

[App page](https://appshunter.io/ios/app/nixie-clocks/id1340858489)

This device displays time using vintage-style Nixie tubes, offering automatic internet time synchronization and online settings management. It features silent operation, extended tube life through direct drive, and cathode poisoning prevention. Users can also enjoy customizable RGB underlighting and remote firmware updates.

**Highlights:** Internet time synchronization, Online settings management, Silent operation, Direct driven Nixie tubes, Cathode poisoning prevention, RGB underlighting, Online firmware updates

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

**In-app purchases:** none


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-calm-desk-timer/id6443838087)

Transform your device into a stylish digital or analog clock. Offers extensive customization with various styles, fonts, skins, and backgrounds. Choose between light and dark modes, 12 or 24-hour formats, and enable or disable flip animations and background sounds.

**Highlights:** Full-screen time and date display, Landscape and portrait modes, 12/24 hour format toggle, Dark/light mode switch, Flip clock and analog clock options, Customizable styles, fonts, and skins, Background sound on/off

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $7.99 | one-time |

**What reviewers like**

- 👍 Minimalist and clean design
- 🚫 Ad-free experience
- ⏱️ Easy to read time display
- 💡 Great for focus and studies
- 📱 Repurposes old phones effectively

**What reviewers complain about**

- 🔋 Potential battery consumption concern
- 💡 Limited customization for some users
- 💡 Screen burn protection mentioned for night use

**Reported bugs**

- Cannot set lock screen

**Requested features**

- Change background colors
- Add white noise options
- Task scheduling feature
- Resizing to fit phone screen
- Landscape and portrait modes


## Frequently asked questions

### Is Nixie Clocks free?

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

### Is Flip Clock free?

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

### Which has better reviews, Nixie Clocks or Flip Clock?

Flip Clock is rated higher. Nixie Clocks averages 4.8 out of 5 from 107 ratings, while Flip Clock averages 5.0 from 28 ratings.

### Do Nixie Clocks or Flip Clock have ads?

Neither Nixie Clocks nor Flip Clock shows ads.

### Which is updated more often, Nixie Clocks or Flip Clock?

Nixie Clocks ships an update every 4 months, and Flip Clock every 2 weeks. Most recently, Nixie Clocks was updated on November 3, 2026 and Flip Clock on November 3, 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.*