Write or dictate, then ask about your whole diary. On iOS 26, supported languages stay on your iPhone. Your OpenAI key, your iCloud, no ads.
MayDiary is a private journal. Write, or dictate, and ask about what you wrote.
KEY FEATURES:
DIARY ANALYSIS:
Ask for a summary, the important moments, your mood, recurring patterns, or practical suggestions. You can also ask your own question. Choose a week, a month, a year, or the whole diary. The answer uses your entries. A shorter period is still read in the context of the rest of the diary.
DICTATION:
On iOS 26, Apple transcribes supported languages on your iPhone. The recording stays on the device, and the speech model downloads once. Where Apple has no on-device model for your language, dictation is sent to OpenAI. After you stop, the transcript is written into the entry. An optional cleanup pass can tidy grammar and formatting; that pass sends the text to OpenAI.
TAGS:
Keep up to five tags. Add them yourself or let the app suggest them from the entry. Filter the list by a tag. The same tags are used for analysis and for finding entries.
FIND ENTRIES:
Ask in your own words. MayDiary returns the matching entries. It looks at the wording, the dates, and the tags, not only at an exact phrase.
PRIVACY:
Entries stay in the app and, if you turn sync on, in your private iCloud. Lock the diary with Face ID, Touch ID, or your device passcode. MayDiary shows no ads and does not collect your writing. Analysis, finding entries, suggested tags, and OpenAI dictation use your own OpenAI key. Those requests are sent with storage turned off. The key is kept in the iPhone Keychain.
EDITOR:
A plain editor with Markdown: headings, quotes, lists, bold, and italic.
NOTE: Apple dictation does not need an OpenAI key. The other AI features do. Setup instructions are in the app.
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Everything you've written, in one answer. Ask about your whole diary. On iOS 26, dictate on your iPhone where Apple knows the language — and with OpenAI everywhere else.
Version 1.3
The developer, PETR HAZUZA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Dark Interface
Information
Seller
PETR HAZUZA
Size
12.2 MB
Category
Lifestyle
Compatibility
Requires iOS 18.4 or later.
iPhone Requires iOS 18.4 or later.
iPad Requires iPadOS 18.4 or later.
Mac Requires macOS 15.4 or later and a Mac with Apple M1 chip or later.