Comparison

Flip Clock Flow vs Nixie Tube Timer

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

Head to head
About

Flip Clock Flow

Features
Read full description

Make time feel intentional with Flip Clock Flowβ€”a beautiful flip clock, focus timer and optional distraction blocker in one calm experience. FLIP CLOCK β€’ See a clear animated clock in the portrait dashboard. β€’ Turn your iPhone or iPad sideways for a clean, full-screen clock. β€’ Choose the clock style that fits your space. FOCUS SESSIONS β€’ Start a 25, 45 or 60-minute session in one tap. β€’ Set a custom duration when you need something different. β€’ Keep an active countdown visible with a Live Activity. β€’ Receive an optional notification when focus time ends. WIDGETS β€’ Keep the current time on your Home Screen or Lock Screen. β€’ Widgets update each minute and follow your selected clock theme. LIFETIME PRO Lifetime Pro is a one-time in-app purchaseβ€”no subscription. It unlocks: β€’ App, category and website blocking during focus using Apple’s Screen Time controls. β€’ Midnight, Ember and Forest clock themes. β€’ Reusable focus presets. β€’ Private, on-device focus history and statistics. PRIVACY BY DESIGN Your Screen Time selections and focus history stay on your device. Flip Clock Flow cannot see your Screen Time usage, and selected app or website identities are never sent to analytics. Optional anonymous product analytics can be disabled at any time in Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Nixie Tube Timer

Features
Read full description

Down to 30 seconds and need longer? Tap +1m and the clock reads 1:30, still running. Photorealistic nixie tubes, eight color themes, fully offline, nothing tracked. A TIMER YOU ACTUALLY WANT TO LOOK AT This is a countdown built around photorealistic nixie-tube digits. Dial in hours, minutes and seconds, hit Start, and watch the tubes glow down one digit at a time β€” a focus sprint, a kid's timeout, a pot on the stove. The screen stays awake while it runs. STRETCH A TIMER THAT'S ALREADY RUNNING This is the part other timers don't do. You set one minute. It counts down to thirty seconds and you realize you need longer. Tap +1m and the clock reads 1:30 and keeps going β€” still running, never stopped, never reset, nothing to start over. EIGHT COLOR SCHEMES Neon Green, Cyber Blue, Amber Glow, Crimson Red, Deep Purple, Hot Pink, Sunny Yellow and Rainbow. Switch instantly, no restart. A Full Glow style spreads the aura across the whole screen if you want more of it. SOUND ON YOUR TERMS Six tick sounds β€” Classic, Soft, Digital, Woodblock, Mechanical, Pendulum β€” synthesized on the fly and locked in step with the digits. Four alarms: Radar, Beacon, Chime, Pulse. Import your own audio file as a custom alarm, or set either to None for silence. Ticks and alarm have their own volume sliders. THE BUTTONS ARE YOURS The amounts you add are the ones you choose β€” +30s, +1m, +5m, +25m, whatever your day actually uses. Nothing is preset for you; press and hold to remove one. They sit right under the countdown while it runs, one tap from the tubes. Durations you run often come back as one-tap shortcuts too. BUILT TO BE QUICK - Timers from a few seconds up to 99:59:59 - Timed against the clock, so it stays accurate instead of drifting - Pause, resume, restart, cancel β€” or stretch the countdown without pausing it - Haptic feedback on start, on tap, and at zero - A local notification when the timer ends, even if you have left the app PRIVACY, PROPERLY No accounts, no ads, no analytics, no tracking, no data collection of any kind. The app never sends anything anywhere. Everything you set stays on your device. Free. iPhone, iOS 17 and later.

Screenshots

Flip Clock Flow4 screens
Nixie Tube Timer4 screens

Verdict

The call

Flip Clock Flow and Nixie Tube Timer are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Flip Clock Flow ships an update every 5 days, Nixie Tube Timer every 3 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

ScorecardNo meaningful differences
Flip Clock Flow versus Nixie Tube Timer: the parameters behind the verdict, then further details
ParameterFlip Clock FlowNixie Tube Timer
PriceFreeFree
Update frequencyEvery 5 daysEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad β€” betteriPhone
Requires iOS18.217.0 β€” better
Further details β€” not scored
Size7 MB85 MB
Age rating4+4+
DeveloperEric SavoieGood Gary Apps LLC

In-app purchases

None

Flip Clock Flow

No in-app purchases

None

Nixie Tube Timer

No in-app purchases

Questions

Is Flip Clock Flow free?
Flip Clock Flow is free to download, with no in-app purchases.
Is Nixie Tube Timer free?
Nixie Tube Timer is free to download, with no in-app purchases.
Do Flip Clock Flow or Nixie Tube Timer have ads?
Neither Flip Clock Flow nor Nixie Tube Timer shows ads.
Which is updated more often, Flip Clock Flow or Nixie Tube Timer?
Flip Clock Flow ships an update every 5 days, and Nixie Tube Timer every 3 days. Most recently, Flip Clock Flow was updated on October 9, 2026 and Nixie Tube Timer on October 7, 2026.

Other comparisons