Starlight Clock vs Tack Time
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Starlight Clock
Read full descriptionHide full description
This is a digital and analog clock application with a starry sky motif. The constellation changes every hour. You can also set events in which locomotives appear at 10, 15, 20, 30, and 60 minute intervals. Sometimes shooting stars also stream. ***** The time text, analog clock, and constellations can be moved with the fingers. The analog clock and constellations can be zoomed in and out with two fingers. Seconds can also be displayed. Touching the time character switches to setting mode. The date and time can be changed to various formats by touching it in the setting mode. The display can be switched between 12-hour and 24-hour formats. Screen rotation in portrait and landscape orientation is also supported. By pressing buttons such as "2X" and "3X," the font size can be adjusted in steps. You can choose from 24 different constellations. The order of the constellations can be set to change randomly as well as in a predetermined order. The time signal can be set to one of 79 different tones.
Tack Time
Read full descriptionHide full description
This app has fully transitioned to a pure native iOS portrait aesthetics architecture. We have thoroughly and physically removed all redundant legacy components and outdated concepts from the underlying engineering. The current version introduces a brand new 100% independently original portrait visual fluid focus clock (Tack Time), with deeply optimized high-precision, high-fidelity haptic feedback, bringing you a pure, immersive time-focused experience free from any impurities. Make time visible and give every focus session a natural rhythm. Tack Time is a groundbreaking tool that merges ultimate visual aesthetics with scientific efficiency. [Ultimate Smoothness: Pure Flutter Engine] Powered by high-performance Flutter rendering, we deliver a zero-lag, native-smooth experience for Retina displays. Whether it's complex fluid physics or subtle light reflections, everything renders elegantly at high frame rates. [First-of-its-kind Liquid Clock: Waves & Swimming Fish] Our exclusive "Ocean Clock" materializes the passage of time as a surging tide inside the digits. As seconds tick, you'll see bright waves rise and fall, and colorful fish swim freely. Every glance is a healing visual feast to help you instantly enter the zone. [Multi-Dimensional Focus Data: Deeply Review Your Productivity] We go beyond simple check-ins to provide a multi-dimensional focus intelligence hub. Detailed analysis of completion rates and time distribution makes your progress visible. With secure iCloud sync, your efforts are seamlessly connected across devices. [Diverse Desk Aesthetics: Fun Math Formula Faces] We offer brain-stimulating math formula faces that decode time with clever equations, making every glance a moment of inspiration. With an automatic always-on screen design, it is the perfect companion for your workspace setup or nightstand. [Scientific Pomodoro Integration] Breathe with the built-in Pomodoro technique. Fully customize focus and break intervals to master your own rhythm of deep work and relaxation. Upgrade to Pro to permanently unlock all current and future premium faces and enjoy a completely ad-free flow space.
Screenshots
Verdict
The clearest difference is ads: Tack Time at none against Starlight Clock's shown. Tack Time also leads on update cadence (every 2 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
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
Both are free to download. Starlight Clock sells 1 one-off in-app purchase and Tack Time sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Starlight Clock ships an update every 3 months, Tack Time every 2 weeks. The most recent releases landed on September 30, 2026 and September 26, 2026 respectively.
| Parameter | Starlight Clock | Tack Time |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 weeks β better |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 β better |
| Further details β not scored | ||
| Size | 14 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Mihoko Araki | εΊθ¬ ι» |
In-app purchases
Starlight Clock
- Starlight Clock with no ads$2.99
Tack Time
- Unlock Tack Time Pro$2.99
Questions
Is Starlight Clock free?
Is Tack Time free?
Do Starlight Clock or Tack Time have ads?
Which is updated more often, Starlight Clock or Tack Time?
Other comparisons















