Diary Notes vs Duodecuple Calc
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Diary Notes
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โฏ Use it like a memo pad to keep a diary - You don't have to write in your diary every day because no one will see it! - Includes photo, video, and recording functions. Tweet as much as you like. โฏ Minimize complex operations and select only essential features - We've created a simple design to avoid complicated operations. - The app is intuitive and easy to use, so anyone can enjoy it. โฏ Easily write down your everyday feelings - For those who just want to jot down their current feelings. - For those who want to organize their thoughts. - For those who want to vent their stress.
Duodecuple Calc
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Display 12 calculators and perform calculations with each one.
Screenshots
Verdict
The clearest difference is in-app purchases: Duodecuple Calc at none against Diary Notes's 1. Duodecuple Calc also leads on iOS requirement (15.8.3 vs 26.0). Diary Notes's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Diary Notes sells 1 in-app purchase, starting at $0.99 per month. Duodecuple Calc asks for nothing beyond the download.
Diary Notes ships an update every 4 days, Duodecuple Calc every 2 weeks. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.
| Parameter | Diary Notes | Duodecuple Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Every 2 weeks |
| Ads | No โ better | Yes |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 26.0 | 15.8.3 โ better |
| Further details โ not scored | ||
| Size | 171 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | tadahiro mori | Hideaki Uchikoshi |
In-app purchases
Diary Notes
- ๆ้กใใฉใณ$0.991 Month
Duodecuple Calc
No in-app purchases
Questions
Is Diary Notes free?
Is Duodecuple Calc free?
Do Diary Notes or Duodecuple Calc have ads?
Which is updated more often, Diary Notes or Duodecuple Calc?
Other comparisons
