Comparison

Plane focus vs Cronus

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

Head to head
About

Plane focus

This app transforms focus sessions into engaging flights. Instead of a simple timer, users select a destination and embark on a virtual journey, with their work duration represented by flight time. Immersive visuals and automatic app blocking help maintain concentration until landing.

Highlights
  • Focus sessions based on real flights
  • Thousands of real airports worldwide
  • Automatic app blocking during flights
  • Immersive airplane window visuals
  • Flight history tracking
  • Boarding-pass ritual to start focus
Features
Read full description

Plane Focus turns focus into a journey. Instead of counting minutes, you choose a real destination, take off, and stay focused until you land. Your flight duration becomes your work session, with progress moving along a real-world route. Immersive airplane-window visuals and calm skies help you settle into deep focus, while distractions stay grounded from takeoff to landing. Key features - Focus sessions based on real flights - Thousands of real airports worldwide - Automatic app blocking during flights - Boarding-pass ritual to start deep work - Immersive airplane window with moving clouds - Flight history with total focus time and progress - Multiple map styles and gentle reminders Traditional timers just watch time pass. Plane Focus makes progress feel real — you’re not waiting, you’re traveling.

About

Cronus

Features
Read full description

Cronus is the iPhone companion to the Cronus time tracker for Mac. The Mac app watches what you actually work on and builds your day for you, with no timers to start and nothing to remember. This app puts that day in your pocket, and adds the two things a laptop cannot see: the time you spend away from it, and the time you spend on your phone. SEE WHERE YOUR TIME ACTUALLY GOES Open the app and today is already drawn: every block of work, every distraction, to scale. Pinch to zoom into a busy afternoon, swipe sideways to compare it to yesterday. No stopwatch, no tags to maintain, no timesheet to fill in on Friday. FIX A CATEGORY IN ONE TAP Cronus is context-aware rather than rule-based, because a rule cannot know that half an hour on LinkedIn was recruiting and the other half was doom scrolling. When it gets one wrong, tap the block and pick the right category. The correction stands from that day onward, and your Mac follows it. LOG THE TIME YOU WERE NOT AT A COMPUTER A conference, a coffee, a walk that turned into the best thinking of the week. Start an entry from the Track tab and stop it when you are done, or press and hold anywhere on the timeline to fill in a stretch you already spent. ADD YOUR PHONE'S DISTRACTIONS, IF YOU WANT THEM Instagram at 11pm is part of your day whether or not it happened on a laptop. Name an app, pick it once in the Screen Time picker iOS shows you, and the time you spend there lands on the same calendar as everything else. This is entirely opt-in and entirely specific: Cronus only ever sees the apps you point it at, it never gets a list of what is on your phone, and the names it stores are the names you typed. THE WEEK AT A GLANCE Seven days of bars, your categories ranked biggest first, and the apps and sites inside each one. Select a run of them and move them all to another category at once. WHAT YOU NEED Cronus for iPhone requires a Cronus account and the Cronus app for Mac, which is where the automatic tracking happens. The Mac app is free for 21 days of actual use, days you do not open it do not count, and $6 a month after that. There is no purchase inside this app. ON PRIVACY Cronus never captures, saves or transmits an image of your screen, on any platform. On the phone, the only thing measured is how long you spent in the specific apps you added yourself, and Apple's Screen Time API is built so that we cannot learn anything else: iOS hands the app an opaque token, never an app name, so what reaches our server is the label you chose and a duration. Screen Time access is optional and can be revoked in Settings at any time. Read the full policy at https://cronushq.com/privacy

Screenshots

Plane focus4 screens
Cronus3 screens

Verdict

The call

The clearest difference is update cadence: Cronus at daily against Plane focus's every 4 months. Cronus also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Plane focus ships an update every 4 months, Cronus daily. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 7 level
Plane focus versus Cronus: the parameters behind the verdict, then further details
ParameterPlane focusCronus
PriceFreeFree
Rating5.0 (10 ratings) — better—
Number of ratings10 — better—
Update frequencyEvery 4 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS26.016.4 — better
Further details — not scored
Size33 MB30 MB
Age rating4+4+
DeveloperHAPPYPIXELMoritz Wallawitsch

In-app purchases

None

Plane focus

No in-app purchases

None

Cronus

No in-app purchases

Questions

Is Plane focus free?
Plane focus is free to download, with no in-app purchases.
Is Cronus free?
Cronus is free to download, with no in-app purchases.
Do Plane focus or Cronus have ads?
Neither Plane focus nor Cronus shows ads.
Which is updated more often, Plane focus or Cronus?
Plane focus ships an update every 4 months, and Cronus daily. Most recently, Plane focus was updated on October 11, 2026 and Cronus on October 5, 2026.

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