Comparison

Portside vs KASANE

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

Head to head
About

Portside

Features
Read full description

This app helps you quickly write down small things and easily use them later. Do any of these sound familiar? • You often have a lot on your mind and it feels cluttered • You want to quickly jot things down as they come up • You don’t need long notes or titles every time • Notes keep piling up and become stressful • You manage work, home, and ideas across different apps — opening each one is a hassle • You sometimes want to add more later or process everything at once • You’d like to manage small tasks like shopping in the same place • Complex apps feel overwhelming — you prefer something simple Just write it here. Handle your to-dos right in the app. Send notes to other services when needed. Archive anything you no longer need. Like sticky notes, just start writing. Then decide what to do — move it, check it off, or keep it. ■ Key Features ■ Quick Capture Instantly write down thoughts as they come to mind Perfect for “brain dumps” to get everything out of your head ■ Unified Notes & To-Dos Convert notes into to-dos anytime Choose freely whether to keep something as a note or turn it into action ■ Simple List View A clean, minimal UI that’s easy to use See only what you need, with a clutter-free design You can also customize what appears on your home screen ■ Archive for Later Store ideas and notes you don’t need right away Keep them without deleting, and revisit them anytime ■ Share to Other Apps Easily send selected notes or to-dos to apps you already use, like Notion ■ Tag Organization Use tags to filter and find specific notes or to-dos AI can also automatically suggest and assign tags ■ Pin & Widget Support Pin important items to the top View them directly from your home screen widgets ■ Apple Watch Support Create notes, create to-dos, and check off completed items—all from your Apple Watch. ■ iCloud Backup & Sync Keep your data synced across multiple devices via iCloud Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.notion.so/Privacy-policy-335b19327cfa803896d8d193112281d9

About

KASANE

Features
Read full description

KASANE is a calendar-free multi-timer for building habits through stacking—not flashy streak pressure. Tired of loud “keep your streak!” theatrics? KASANE lets you move at your own pace—quietly, like a cat—and repeat only what you actually get done today. Record what you finish without the guilt spiral. Reading, stretching, language practice, deep work—run multiple habits at the same time. Tap a card on Today to start a timer right there. Pause when you need to, and pick up where you left off. ■ WHO IT'S FOR • Anyone who wants to keep several daily habits going in parallel • People who want to manage Pomodoro and deep work at the same time • Those who prefer calm consistency over streak pressure • Anyone who wants to record progress and look back later ■ KEY FEATURES • Create and edit habits (name, icon, reminder time, weekdays) • Run multiple timers at once • See today's focus time and streak at a glance • View history by day, week, or month • Daily Cards—generate and share a visual summary of your day • Local reminder notifications before a habit starts ■ FREE PLAN • Up to 3 habits • Up to 2 concurrent timers • 7 days of history • Core Daily Card templates • Daily Card save and share ■ KASANE PRO • Unlimited habits and concurrent timers • Full history • Additional Daily Card templates, regenerate cards for past days, (coming soon) no watermark, CSV export, and more • Additional themes (as released) Your data stays on your device. No account required. No ads. Privacy Policy: https://kasane-lp.akifumi.workers.dev/privacy Terms of Use: https://kasane-lp.akifumi.workers.dev/terms

Screenshots

Portside4 screens
KASANE4 screens

Verdict

The call

The clearest difference is iOS requirement: KASANE at 17.0 against Portside's 26.0. On price, update cadence, ads and in-app purchases 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. Portside sells 1 in-app purchase, starting at $0.99 per month and KASANE sells 2 in-app purchases, starting at $7.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 5 level
Portside versus KASANE: the parameters behind the verdict, then further details
ParameterPortsideKASANE
PriceFreeFree
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size23 MB52 MB
Age rating4+4+
DeveloperJun TakahashiAKIFUMI YOSHIMURA

In-app purchases

1 purchases

Portside

Subscriptions1
  • Premium(Monthly)7 Days trial$0.991 Month
2 purchases

KASANE

Subscriptions1
  • Yearly Premium$7.991 Year
One-time1
  • Lifetime License$17.99

Questions

Is Portside free?
Portside is free to download, with in-app purchases available.
Is KASANE free?
KASANE is free to download, with in-app purchases available.
Do Portside or KASANE have ads?
Neither Portside nor KASANE shows ads.
Which is updated more often, Portside or KASANE?
Portside ships an update weekly, and KASANE weekly. Most recently, Portside was updated on September 20, 2026 and KASANE on September 18, 2026.

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