Comparison

One vs Ember

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

Head to head
About

One

Features
Read full description

One-Line Diary is a simple journaling app that lets you easily capture your daily thoughts and moments in just a few words. With the calendar view, you can look back on past entries and quickly see how many posts you made on each day at a glance. The built-in report feature helps you review and visualize your records, making it easy to notice changes in your feelings and habits over time. Designed with a clean and distraction-free interface, the app lets you focus entirely on your thoughts without interruption. Why not start recording small daily insights and emotional changes at your own pace?

About

Ember

Features
Read full description

Ember is a diary for the things you wouldn't say out loud yet. The day you almost quit. The walk that fixed you. The sentence your mother said in 2007 that you still think about. It's not a notebook for productivity or a journal for habits. It's a place to write the way you'd write to yourself at three in the morning, when nobody is watching and the sentences don't have to be good. The page is plain on purpose. Fraunces or Lora for the writing, set at a size that doesn't make you squint. A title field that doesn't ask much. A small line for the weather, the mood, the song that was playing. Voice memos when typing feels like too much. Photos when a photo says it faster. A drawing layer for the days a doodle is the whole entry. Each morning, one prompt, if you want one. Ignore it if you don't. Everything you write stays on this iPhone, encrypted with AES-GCM the moment you tap save. There is no Ember server. No account to make. No analytics looking over your shoulder. We couldn't read your entries if we tried β€” we built it that way on purpose. Ember is free to download with everything unlocked. One small banner supports development β€” remove it anytime with a single one-time purchase. No subscription, no auto-renewal, no popups asking you to upgrade in eighteen months. Export to Markdown or PDF whenever you like, and take what you wrote with you. The diary is yours; we're just the room it sits in. Write something today. Even one line.

Screenshots

One3 screens
Ember4 screens

Verdict

The call

The clearest difference is in-app purchases: One at none against Ember's 1. One also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). On price 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Ember sells 1 one-off in-app purchase. One asks for nothing beyond the download.

UpkeepUpdate frequency

One ships an update every 3 days, Ember every 3 weeks. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

Scorecard5 real differences Β· 1 level
One versus Ember: the parameters behind the verdict, then further details
ParameterOneEmber
PriceFreeFree
Update frequencyEvery 3 days β€” betterEvery 3 weeks
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS13.0 β€” better17.4
Further details β€” not scored
Size20 MB12 MB
Age rating4+4+
DeveloperYuga MatsumiδΈ½δ½³ ζ–½

In-app purchases

None

One

No in-app purchases

1 purchases

Ember

One-time1
  • Ember Pro$0.99

Questions

Is One free?
One is free to download, with no in-app purchases.
Is Ember free?
Ember is free to download, with in-app purchases available.
Do One or Ember have ads?
Ember shows ads; One does not.
Which is updated more often, One or Ember?
One ships an update every 3 days, and Ember every 3 weeks. Most recently, One was updated on October 31, 2026 and Ember on October 28, 2026.

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