Private Notes vs Waku Todo
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Private Notes
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LockNotes is a privacy-focused iOS app that lets you store personal notes securely on your device with built-in lock protection. Your data stays local, works offline, and is never uploaded to the cloud. Designed for speed, simplicity, and security, LockNotes gives you full control over your private information.
Waku Todo
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Overdue to-dos turn into roaches. In your room. On your phone. You have tried to-do apps before. You added everything, ignored most of it, and deleted the app a week later. Waku Todo makes ignoring a task cost you something you can actually see: miss a due date, and a roach moves into your room. Finish the to-do, and the roach is gone. Clear them all, and the room is spotless again. HOW IT WORKS 1. Add a to-do 2. Pick a due date (or skip it) 3. Tap it when it is done WHAT HAPPENS WHEN YOU PUT THINGS OFF - Every overdue to-do puts one roach in your room - The floor shows up to 10 roaches. Past that, it just says Infested - Completing a to-do clears one roach on the spot - Nothing overdue means a spotless room STILL A REAL TO-DO LIST - Due dates: today, tomorrow, in a week, or picked from the calendar. No due date is fine too - Repeat daily, weekly or monthly - Star the ones that matter - Notes - Filter by all, overdue or completed - Undo a completion right away - English and Japanese, matched to your device language MADE FOR PEOPLE WHO - Keep deleting to-do apps after a week - Know the deadline and still put it off - Want a nudge that is funny instead of stressful - Are tired of apps with a hundred features NO STRINGS ATTACHED - No account and no email. Nothing to sign up for - Everything stays on your device. Nothing is sent anywhere - No ads and no tracking - No in-app purchases. Every feature is free - The app requests no permissions at all: no camera, no location, no notifications BEFORE YOU DOWNLOAD - There are no push notifications or reminders. You open the app to check - iPhone only Roaches move in when you put things off. They leave when you get things done.
Screenshots
Verdict
The clearest difference is iOS requirement: Waku Todo at 16.4 against Private Notes's 18.6. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.
| Parameter | Private Notes | Waku Todo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 18.6 | 16.4 β better |
| Further details β not scored | ||
| Size | 2 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Talal Aslam | YUYA SATO |
In-app purchases
Private Notes
No in-app purchases
Waku Todo
No in-app purchases
Questions
Is Private Notes free?
Is Waku Todo free?
Do Private Notes or Waku Todo have ads?
Which is updated more often, Private Notes or Waku Todo?
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