Comparison

Decoy vs SuguMemo

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

Head to head
About

Decoy

Features
Read full description

The iPhone's own Notes app can't live on your Lock Screen. Decoy can, and nobody else can read it. Appointments, medication, errands you'd rather not explain. The Lock Screen is the surface you glance at most, and it's also the one other people see most. So some things never made it there. While your phone is locked, Decoy looks like a blank card, or whatever text you chose in advance. The moment Face ID passes, your real notes appear. ■ Made for ・Writing things down and then never looking at them again ・Living or working around people who glance at your screen ・Appointments and errands you'd rather keep to yourself ■ What it does ・Works as a to-do list, or as plain notes ・Reminders at the time you set ・Repeats daily, on weekdays, weekly, monthly ・Separate lists for separate parts of your life (Pro) ■ How it's built ・No ads ・Everything stays on your device by default. iCloud sync is there if you want it ・No accounts, no sign-in A note on what this is not: once Face ID or your passcode has been entered, anyone holding your phone can read your notes. Decoy hides things from the people around you, not from someone with your unlocked phone. Keep passwords and PINs in a dedicated password manager. Decoy Pro is a one-time purchase. It removes the note limit and adds per-note reminders, separate lists, and control over how things look while locked. Terms of Use: https://suzukimari.com/terms/ Privacy Policy: https://suzukimari.com/privacy-policy.html

About

SuguMemo

Features
Read full description

Just say “Buy milk, eggs, and carrots,” and your tasks appear on your Lock Screen. (See the first screenshot.) No complicated setup or account required—start using it right away. There’s no need to open the app to view your notes or check off tasks. Simply tap a task on your Lock Screen to mark it as complete. You can display plain notes on your Lock Screen, too. ■ Jot it down. Let AI find the tasks. Turn your notes into suggested tasks with AI. AI features require iOS 26 or later and a device that supports Apple Intelligence. ■ Don’t feel like typing? Just speak. Transcribe your voice in real time. Easily capture shopping lists, ideas as they come to you, and things to do later. ■ Check your Lock Screen. Check off your tasks. Keep your notes visible with Live Activities, and mark tasks as complete or incomplete right from your Lock Screen. Supports light and dark modes, plus color themes.

Screenshots

Decoy4 screens
SuguMemo4 screens

Verdict

The call

The clearest difference is in-app purchases: SuguMemo at none against Decoy's 1. On price, ads, device support 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. Decoy sells 1 one-off in-app purchase. SuguMemo asks for nothing beyond the download.

Scorecard1 real difference · 5 level
Decoy versus SuguMemo: the parameters behind the verdict, then further details
ParameterDecoySuguMemo
PriceFreeFree
Update frequency—Every 3 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size10 MB9 MB
Age rating4+4+
DeveloperMari Suzukitomoki swanson

In-app purchases

1 purchases

Decoy

One-time1
  • Decoy Pro$4.99
None

SuguMemo

No in-app purchases

Questions

Is Decoy free?
Decoy is free to download, with in-app purchases available.
Is SuguMemo free?
SuguMemo is free to download, with no in-app purchases.
Do Decoy or SuguMemo have ads?
Neither Decoy nor SuguMemo shows ads.

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