Comparison

Knō vs To Do, Note, Checklist

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

Head to head
About

Knō

This app helps you manage and share your latest contact information with friends, clients, and colleagues. It ensures your contacts always have your updated details and notifies you of their changes. You maintain complete control over your data, deciding what to share and with whom.

Highlights
  • Share updated contact information
  • Receive contact updates from others
  • Control data sharing per profile
  • QR code for vCard sharing
  • Import/export vCards
  • Multi-profile organization
Read full description

Keeping track of the best way to reach your friends, clients and colleagues is getting more time consuming, and our app lets you to connect with people you know personally and professionally, and ensure they always have your latest contact information. You will also get notified of any changes made by your contacts and allow your own address book to receive their updates. Most importantly, we have developed our app so that you are always in control of your data. Outside of your registered email and phone number to create an account, we don't store your contact list, their personal information, nor yours. Unlike other services that keep your data offshore, we don't store any of your data. We simply act as a data broker and send your data to whomever you tell us to. You can decide with whom you share information, can stop sharing or change the information you share with someone at any time. We believe in privacy so strongly, that we store nothing beyond the email(s) that you register with us. We love our customers, but we really don't need to know your info. - You can now add people who don't have the app to a profile group and they'll receive an email with your vCard for that profile when you notify people - Download or share your vCard in our QR format and use it on websites, business cards or anywhere you want NEVER. LOSE. CONTACT. Getting the most out of the Knō App. - Use the 4 profiles to group your family, friends, co-workers and others - Control what contact information you wish to share in each profile - Choose to just save your updates and/or who to notify after an edit to a profile - Use our QR Code feature to quickly scan new contacts or share your info - Import vCards you receive easily via Knō - If needed, manually add someone using the '+' button on the Contact List - Invite your friends and colleagues using the quick INVITE button on the Contact List - When a Knō contact updates their contact information, the next time you open the app their contact details will automatically update - Import people from your phone's address book into Knō easily from the Settings page - Switch Knō to another language without having to change your phone's language We support Arabic, Chinese, Danish, English, French, German, Greek, Hindi, Italian, Japanese, Portuguese, Russian, Spanish, Turkish

About

To Do, Note, Checklist

Features
Read full description

One of the most simple to use checklist. Take a notes, save your things to do and all ideas fast and convenient. You can use to keep note quickly. Or you can use to keep a list of item that need to buy for grocery shopping trip. Features: - Minimalistic interface. - Drag-and-drop for re-arrange items.

Screenshots

Knō4 screens
To Do, Note, Checklist4 screens

Verdict

The call

The clearest difference is ads: Knō at none against To Do, Note, Checklist's shown. Knō also leads on iOS requirement (9.0 vs 13.0). On price, update cadence, 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

Knō ships an update fortnightly, To Do, Note, Checklist monthly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 6 level
Knō versus To Do, Note, Checklist: the parameters behind the verdict, then further details
ParameterKnōTo Do, Note, Checklist
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyFortnightly — betterMonthly
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size100 MB4 MB
Age rating4+4+
DeveloperknoTinh Tran Minh

In-app purchases

None

Knō

No in-app purchases

None

To Do, Note, Checklist

No in-app purchases

Questions

Is Knō free?
Knō is free to download, with no in-app purchases.
Is To Do, Note, Checklist free?
To Do, Note, Checklist is free to download, with no in-app purchases.
Do Knō or To Do, Note, Checklist have ads?
To Do, Note, Checklist shows ads; Knō does not.
Which is updated more often, Knō or To Do, Note, Checklist?
Knō ships an update fortnightly, and To Do, Note, Checklist monthly. Most recently, Knō was updated on October 13, 2026 and To Do, Note, Checklist on October 3, 2026.

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