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Is Moment Diary Safe?

Moment Diary privacy label · by Tomonari Sonoda · checked November 2026

  • Collects no data
  • Recently updated
App Privacy label Developer-reported · checked November 1, 2026
Data Not Collected

The developer states that no data is collected from this app.

Short answer

On the label, yes. Moment Diary's developer reports that it collects no data, which puts it among the 21% of journal & diary apps we checked with a "Data Not Collected" label. That is a self-declared statement, not an audit, and it does not cover data processed only on your device.

At a glance

Moment Diary privacy in one look

Data exposure on the label
Data not collected
  1. 1
  2. 2
  3. 3
  4. 4

Built only from the developer's App Store label. It describes disclosure, not tested behaviour.

Verdict from the label
Data not collected

Moment Diary's developer states that the app does not collect any data from this app.

Try it

Did Moment Diary ask for something?

Pick the permission prompt you saw. We compare it with what Moment Diary's developer declared.

It asked me for access to…
Tap a prompt to compare it with the label.
Not on the label

Location is not on Moment Diary's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not on the label

User Content is not on Moment Diary's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not on the label

Contacts is not on Moment Diary's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not declared on the label

Moment Diary declares no tracking, so a tracking prompt would contradict its label. Decline it, and consider reporting the mismatch to Apple.

Not on the label

Health & Fitness is not on Moment Diary's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.

Reading the label

What Moment Diary's label means for you

“Data Not Collected” is the cleanest result a label can show. It means the developer states that no data leaves your iPhone in a way the developer or its partners can access for longer than needed to handle a request. Data processed only on your device does not count as collected, so Moment Diary can still read files or photos you open in it.

The statement is the developer's own. Apple reviews apps but does not audit every label, and analytics or crash-reporting libraries added later can make a label out of date. If Moment Diary asks you to create an account, upload files or allow tracking, that would not match a no-collection label — and is worth noticing.

Journals collect your private thoughts, moods and often your location and photos. A lock screen inside the app is not the same as encryption of the synced entries. Check whether entries sync to the developer's server and whether that sync is end-to-end encrypted; export your journal regularly.

Among the 173 journal & diary apps in our snapshot with a label, 32% declare tracking, 54% collect data linked to you and 21% say they collect nothing. Moment Diary lists 0 data types, fewer than the average of 2.9 for this group.

Lifestyle apps cover family, home and personal organisation, and often combine location, contacts and photos in one place.

On your iPhone

Settings to check for Moment Diary

  1. 1

    Lock the app

    On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.

  2. 2

    Notifications

    Settings › Notifications › Moment Diary › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does Moment Diary track you?

No tracking declared

There is no “Data Used to Track You” section on Moment Diary's label.

Does Moment Diary track you? Full answer and how to stop it →

iOS 18 and later

Lock Moment Diary behind Face ID

  1. Find Moment Diary on your Home Screen or in App Library.
  2. Touch and hold the icon until the quick-actions menu opens.
  3. Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
  4. Tap Require Face ID again to confirm. Moment Diary now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not Moment Diary has a passcode of its own. It does not change what the app sends to its developer.

Lock or hide Moment Diary: step-by-step guide →

From the App Store record

About Moment Diary

DeveloperTomonari Sonoda
App Store categoryLifestyle (also Business)
Latest version17.1, released August 2026
First releasedJanuary 2010
RequiresiOS 26.0 or later
Size10 MB
Age rating4+
Languages8 (EN, DE, JA, KO, PL, ZH, ES, ZH)
Bundle IDnet.sonoda.tools

The current version shipped in August 2026, so the app is actively maintained and its label is likely current. Labels are updated by developers when practices change.

Read with care

What the label cannot tell you

  • A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Moment Diary sends.
  • It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
  • Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
  • Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
  • Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.

The question to ask Moment Diary's developer: Can anyone at the company read my entries?

How it compares

Moment Diary vs similar journal & diary apps

Data types listed on each App Store privacy label
Tracks youLinked to youNot linkedCollects nothing

Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.

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Do it now

Your Moment Diary privacy checklist

Tick what you have done
Tick each step as you do it on your iPhone.

Done. You have applied every control the label points to.

Quick quiz

True or false?

  1. Q1Moment Diary's privacy label says it uses data to track you.
    Right.
    Not quite.

    False: there is no Data Used to Track You section on Moment Diary's label.

  2. Q2Apple tests every app to confirm its privacy label is accurate.
    Right.
    Not quite.

    Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.

  3. Q3An app with a “Data Not Collected” label cannot read any of your photos.
    Right.
    Not quite.

    It can read photos you give it access to. Processing on your device is not collection; only data sent off the phone counts.

  4. Q4Data “Not Linked to You” is never sent off your iPhone.
    Right.
    Not quite.

    It is collected and sent; the developer says it is de-identified rather than tied to your account or device.

  5. Q5Tapping “Ask App Not to Track” can stop an app from working.
    Right.
    Not quite.

    Apple's rules require apps to work the same whether or not you allow tracking.

Questions people ask

Moment Diary privacy FAQ

Is Moment Diary safe to use?
Based on its App Store privacy label, moment Diary's developer states that the app does not collect any data from this app. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does Moment Diary track you?
No. Moment Diary's label has no Data Used to Track You section.
What data does Moment Diary collect?
None, according to the developer's label.
Who makes Moment Diary?
Tomonari Sonoda, according to the App Store. It was first released in January 2010 and the current version is 17.1.
Can I lock Moment Diary with Face ID?
On iOS 18 or later, touch and hold Moment Diary's icon and choose Require Face ID (or Touch ID / Passcode). This is an iPhone feature and works for most downloaded apps, whether or not the app has its own lock.
How does Moment Diary compare with other journal & diary apps?
Across 173 journal & diary apps with labels in our snapshot, 32% declare tracking and 21% say they collect no data. Moment Diary lists 0 data types against an average of 2.9.
Can anyone at the company read my entries?
The privacy label cannot answer that. Look for it in Moment Diary's privacy policy or support pages, linked from the App Store listing. Check whether entries sync to the developer's server and whether that sync is end-to-end encrypted; export your journal regularly.
How do I delete my data from Moment Diary?
Apps that let you create an account must also let you start account deletion from inside the app (an App Store rule since June 2022). Deleting the app from your iPhone alone does not delete data already sent to the developer.
Facts on this page come from Moment Diary on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction