Comparison

Nixie Clocks vs Millisecond Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nixie Clocks

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
Read full description

Zen Nixie Clock is our first 6-tube clock designed using R|Z568M nixie tubes from our production. The case is designed in a minimalistic way, combining simple aluminum stand and a glass cover – just like a museum vitrine. Thanks to its simple shapes, the clock suits every interior – especially offices, living rooms... Zen Nixie Clock features Internet connection – the clock contains a wifi module and is designed to operate online. The time is automatically synchronized from network, so you don’t have to do it manually and there are no other devices necessary (no GPS modules, radio modules etc..). In case of power loss, the clock remembers all the settings and time will be synchronized automatically from internet. Easy online settings – all settings of the Zen Nixie Clock can be controlled online from your user account on our website. No need to search for user guide anytime you want to make changes in settings! Silent circuitry – the clock is absolutely silent, there is no audible noise produced by its electronic parts. Direct driven design – nixie tubes are driven directly, this prolongs their lifetime. Common practice is to use multiplexed driving circuit (which is easier to manufacture and cheaper), but such a driving circuit shorten nixie tube lifetime. Cathode poisoning prevention – the clock can periodically run a cathode poisoning prevention routine. This helps to keep all digits of all tubes in good condition. Rotary knob – for offline users, there is a rotary knob on the back of the board. Using this knob, user can enter into settings menu and do the settings manually. This feature is still in development. Online firmware update – the integrated wifi module makes online firmware updates possible. Whenever there is a new firmware update (new features, bug fixes), your clock can be updated remotely. No blue spot – there are no blue spots in the tubes known from some other clocks (especially clocks built with IN-18 nixie tubes). Colon tubes – the clock support our colon tubes (in development), they will match design of the nixie tubes (by base and internal structure). RGB underlight – there are 8 RGB leds (WS2812B – “neopixels”) on the bottom of the board which make some cool effects possible. Purist customers who prefers nixie tube glow only can set the underlight off. This feature is in development!

About

Millisecond Clock

This app displays the most accurate time available, down to the millisecond. It's useful for measuring network delays or video streaming lag by comparing displayed time differences.

Highlights
  • Millisecond precision time display
  • Accurate timekeeping for iPhone and iPad
  • Network delay measurement
  • Video streaming lag analysis
  • Free to download
Features
Read full description

Millisecond Clock shows the exact time down to 1/1000 of a second, accurate enough to measure real delay in cameras, video streams, and network connections. Point a camera at the screen and compare it to another display: the difference in milliseconds tells you exactly how much latency you are dealing with. Beyond precision, Millisecond Clock is a clock you can make your own. Every part of it, from color and font to position on screen, is yours to design. DESIGN YOUR CLOCK- 13 built-in color themes, or create unlimited custom themes with the full color picker - 30 fonts, from the classic digital LED look to elegant serif and rounded styles - Adjustable glow and shadow effects for extra depth - Drag the clock, date, and weekday anywhere on screen, and resize each one independently STAY ON TIME, YOUR WAY- 12-hour or 24-hour time, with an optional blinking colon - 9 date formats to match how you write dates - Show or hide the date and day of the week - Toggle the millisecond display on or off BUILT TO STAY ON SCREEN- Keeps your screen awake so the clock is always visible - A true universal app, designed for both iPhone and iPad Millisecond Clock is free to use, supported by ads. A one-time in-app purchase removes ads and unlocks every premium theme, no subscription required.

Screenshots

Nixie Clocks4 screens
Millisecond Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: Nixie Clocks at none against Millisecond Clock's 3. Nixie Clocks also leads on ads (none vs shown). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Millisecond Clock sells 3 one-off in-app purchases. Nixie Clocks asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Nixie Clocks against 4.7 for Millisecond Clock. Both are backed by a comparable volume of ratings — 106 and 131 respectively. Written reviews are what separate them: 71% of Nixie Clocks's written reviews are positive against 73% of Millisecond Clock's.

UpkeepUpdate frequency

Nixie Clocks ships an update every 4 months, Millisecond Clock every 6 months. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Nixie Clocks versus Millisecond Clock: the parameters behind the verdict, then further details
ParameterNixie ClocksMillisecond Clock
PriceFreeFree
Rating4.8 (106 ratings) — better4.7 (131 ratings)
Positive reviews71.4% of reviews72.7% of reviews — better
Number of ratings106131 — better
Update frequencyEvery 4 months — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size12 MB4 MB
Age rating9+4+
DeveloperljeznyChia-Chun Hsieh

Customer experience

Nixie Clocks

All ratings106 ratings
Positive93.4%
Neutral2.8%
Negative3.8%
Written reviews14 reviews
Positive71.4%
Neutral7.1%
Negative21.4%

Millisecond Clock

All ratings131 ratings
Positive93.1%
Neutral2.3%
Negative4.6%
Written reviews11 reviews
Positive72.7%
Neutral18.2%
Negative9.1%

In-app purchases

None

Nixie Clocks

No in-app purchases

3 purchases

Millisecond Clock

One-time3
  • Remove Ads$0.99
  • Special Offer Package$2.99
  • Unlock Themes$3.99

Questions

Is Nixie Clocks free?
Nixie Clocks is free to download, with no in-app purchases.
Is Millisecond Clock free?
Millisecond Clock is free to download, with in-app purchases available.
Which has better reviews, Nixie Clocks or Millisecond Clock?
Nixie Clocks is rated higher. Nixie Clocks averages 4.8 out of 5 from 106 ratings, while Millisecond Clock averages 4.7 from 131 ratings.
Do Nixie Clocks or Millisecond Clock have ads?
Millisecond Clock shows ads; Nixie Clocks does not.
Which is updated more often, Nixie Clocks or Millisecond Clock?
Nixie Clocks ships an update every 4 months, and Millisecond Clock every 6 months. Most recently, Nixie Clocks was updated on October 5, 2026 and Millisecond Clock on October 14, 2026.

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