Comparison

MomentNote vs Big Yellow Diary

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

Head to head
About

MomentNote

Features
Read full description

Mood Diary is a personal diary recording tool with a visualized timeline, which is used to record personal life, thoughts, inspirations and store diary-related photos locally. Record every meaningful moment in your life on the timeline. 【Timeline】Time is like a line, with the past at one end and the future at the other. Each mood you record can only be pushed forward in the direction of time and also be traced back from time to time. 【Photo Recording】Unrestricted photo storage. Images are one of the best ways to record, as they prevent your memories from fading away with the passage of time. 【Data Protection】Diary pictures, text data, etc. will not be stored on third-party servers. They are only saved on your personal iCloud or local device. You never need to worry about the leakage of your personal privacy data in this interconnected world. 【Privacy Protection】The APP can enable face recognition to ensure that only you yourself can open the diary. --Pro User Benefits: Pro users can post an unlimited number of mood diaries. Each diary can have an unlimited number of photos attached and an unlimited number of tags can be created. Free users can only post a maximum of 10 diaries, with a limit of 3 photos for each diary, and can only create a maximum of 3 tags. --Subscription Price: The price will be shown during the subscription process. The recurring monthly price is $1.0 per month. --Cancellation of Subscription: To cancel your subscription, you must manually turn off auto-renewal in your iTunes/Apple ID settings at least 24 hours before the current subscription period ends. --Renewal: Your Apple account will be charged within 24 hours before the end of the current subscription period. Upon successful payment, your subscription period will extend by one more subscription cycle. --Privacy Policy: https://tangible-paperback-98a.notion.site/Privacy-Policy-3b051832e9204b1f9979d6eedbda44ed?pvs=4 --Terms of Use: https://tangible-paperback-98a.notion.site/Terms-of-Use-c1feef02e7c645bc8ed5ea1f405bd5dd?pvs=4

About

Big Yellow Diary

Features
Read full description

Why keep a diary? My answer is, because some information may seem unimportant at the time, but later you might need it and forget it. For example, today I plan to visit a friend's house. I’ve been there before, but I just can't remember the exact address. Another example is, there’s someone around me who said something, how can I judge if it’s true or not? One way is to compare it with what they’ve said before and see if there are any contradictions. Without a diary, there's no way to make such a comparison.

Screenshots

MomentNote4 screens
Big Yellow Diary4 screens

Verdict

The call

The clearest difference is update cadence: Big Yellow Diary at every 6 days against MomentNote's every 3 weeks. On price, ads, in-app purchases and device support 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. MomentNote sells 1 in-app purchase, starting at $0.99 per month and Big Yellow Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

MomentNote ships an update every 3 weeks, Big Yellow Diary every 6 days. Both last shipped on November 8, 2026.

Scorecard1 real difference · 5 level
MomentNote versus Big Yellow Diary: the parameters behind the verdict, then further details
ParameterMomentNoteBig Yellow Diary
PriceFreeFree
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size2 MB5 MB
Age rating4+4+
Developer子源 董山 黄

In-app purchases

1 purchases

MomentNote

Subscriptions1
  • 月订阅$0.991 Month
1 purchases

Big Yellow Diary

One-time1
  • Plus version$1.99

Questions

Is MomentNote free?
MomentNote is free to download, with in-app purchases available.
Is Big Yellow Diary free?
Big Yellow Diary is free to download, with in-app purchases available.
Do MomentNote or Big Yellow Diary have ads?
Neither MomentNote nor Big Yellow Diary shows ads.
Which is updated more often, MomentNote or Big Yellow Diary?
MomentNote ships an update every 3 weeks, and Big Yellow Diary every 6 days. Most recently, MomentNote was updated on November 8, 2026 and Big Yellow Diary on November 8, 2026.

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