Comparison

SincereNotes vs Kadoink

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

Head to head
About

SincereNotes

This app helps you stay connected with loved ones by providing personalized reminders for important dates and thoughtful message suggestions. It acts as a relationship manager, ensuring you never miss a chance to show you care, especially during difficult times like grief anniversaries or illness.

Highlights
  • Personalized reminder schedules
  • Customizable message suggestions
  • Grief anniversary support
  • Illness and chemo check-in reminders
  • Human-centric message sending
  • Intentional, non-automated reminders
Features
Read full description

How many times have you thought about reaching out, but life got in the way? A missed check-in, an unsaid "thank you," a "thinking of you" that never got sent. SincereNotes is the bridge between wanting to be thoughtful and actually being there, helping you keep in touch with the people who matter most. Most of us care deeply about our friends and family, but we're busy. SincereNotes isn't a productivity tool; it's a relationship tool. It helps you stay consistent, thoughtful, and present for the connections that matter. NEVER FORGET SOMEONE AGAIN Life moves fast. Birthdays pass. Grief anniversaries go unacknowledged. A friend going through chemo wonders if anyone still remembers. SincereNotes is your personal relationship reminder, making sure you show up for the people you love, right when it matters most. Never forget someone again. Whether it's a birthday, a grief anniversary, or simply a monthly check-in to stay in touch with a long-distance friendship, SincereNotes keeps you close to the people you'd otherwise drift from. KEY FEATURES • Personalised Rhythms: Set custom reminder schedules for different people — daily, weekly, or monthly. Your personal relationship manager, built around real life. • Message Assistance: Never face a blank screen again. Get thoughtful suggestions and prompts you can customise to your own voice. A personal message scheduler that keeps your connections warm — use it as your own personal CRM for the people who actually matter. • Grief Anniversary Support: Mark the dates that are hard — grief anniversaries, bereavement milestones, loss check-ins. SincereNotes reminds you to reach out when a friend needs it most, even when life makes it easy to forget. • Illness & Chemo Support: Staying connected with someone through treatment is hard to maintain consistently. SincereNotes helps caregivers and caring friends never miss a moment that matters. For anyone supporting a friend or family member through illness, it's an essential connection tool. • Human-Centric Design: Not a bot, not a script. Every message comes from you — SincereNotes is your personal message scheduler, not an automated sender. Real relationships, always human. • Intentional Reminders: We work in the background so your loved ones never feel forgotten. Stay in touch effortlessly, with reminders that feel personal, not automated. WHO IS SINCERENOTES FOR? SincereNotes is for anyone who values deep relationships but needs a system to act on them. If you've ever said "I meant to reach out", this app is for you. It's for the friend supporting someone through bereavement who doesn't know when to check in. For the busy parent staying close to grown children. For the caregiver tracking treatment schedules. For anyone who knows that keeping in touch is an act of love, not just convenience. Think of it as a personal CRM and relationship manager for your closest connections, a thoughtful, human alternative to letting friendships quietly fade. Download SincereNotes and start building the relationship habits that keep the people you love feeling seen. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Kadoink

Features
Read full description

Kadoink is an AI-driven, independent mobile social network that allows users to instantly initiate group calls and gatherings by directly ringing phones, sending AI text messages, or starting video sessions. The platform is designed to connect up to ten participants at once without requiring them to install an app or log in. Key features of the platform include:Smart Channel Selection: The AI can intelligently determine the best way to reach each contact, offering options such as ringing phones, sending direct notifications, or initiating private rooms.Video & Ringing: You can start a group session where you appear on video while up to 9 other participants have their phones rung directly, making it ideal for immediate, on-the-fly collaboration.Accessibility: People on the receiving end don't need a downloaded application or an account; they just answer the phone or read the text to join.

Screenshots

SincereNotes4 screens
Kadoink4 screens

Verdict

The call

The clearest difference is in-app purchases: Kadoink at none against SincereNotes's 2. SincereNotes's advantage is ratings volume (5 vs 1) and device support (3 vs 1). On price, rating, ads and iOS requirement 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. SincereNotes sells 2 in-app purchases, starting at $4.99 per month. Kadoink asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SincereNotes against 5.0 for Kadoink. That said, the two scores are not equally well evidenced: SincereNotes has 5 ratings behind it against 1, so its average is the more settled of the two.

Scorecard3 real differences · 7 level
SincereNotes versus Kadoink: the parameters behind the verdict, then further details
ParameterSincereNotesKadoink
PriceFreeFree
Rating5.0 (5 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings5 — better1
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size87 MB91 MB
Age rating4+17+
DeveloperSincere NotesCogmento, Inc.

In-app purchases

2 purchases

SincereNotes

Subscriptions2
  • Monthly Subscription7 Days trial$4.991 Month
  • Premium7 Days trial$29.991 Year
None

Kadoink

No in-app purchases

Questions

Is SincereNotes free?
SincereNotes is free to download, with in-app purchases available.
Is Kadoink free?
Kadoink is free to download, with no in-app purchases.
Which has better reviews, SincereNotes or Kadoink?
SincereNotes and Kadoink are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.
Do SincereNotes or Kadoink have ads?
Neither SincereNotes nor Kadoink shows ads.

Other comparisons