nikki vs Super Simple Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nikki
This app allows you to keep a private diary with rich media. You can add photos, take notes in a chat format, and use it as a planner. Security features include password and biometric locks, with customizable themes to personalize your journaling experience.
- Insert pictures into diary entries
- Chat-style memo function
- Use as a future date schedule book
- Password and biometric app lock
- Various fun stamps
- Customizable timeline themes (Pinboard, List, Calendar)
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Wanna write your secret diary...?? Here is the perfect app for you!! ◎Functions 1. Pictures can be inserted into each article. 2. There is a memo function: You can take notes in a chat format. 3. It can be used as a schedule book by writing on a future date. 4. You can lock the app with a password. It corresponds also to Face ID, Touch ID. 5. There are various fun stamps. ◎Change the timeline theme as you like (3 types) 1. Pinboard type with an emphasis on photos 2. List type with an emphasis on articles 3. Calendar type with an emphasis on practicality
Super Simple Diary
Record your thoughts and memories with this straightforward journaling application. It allows you to attach multiple photos to entries and features a minimalist design to keep your focus. Your data is stored locally on your device, ensuring complete privacy.
- Simple writing and reading interface
- Attach multiple pictures to entries
- Minimalist and distraction-free design
- Local data storage for privacy
- User-friendly interface
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Hi. This is the simplest diary app "Super Simple Diary". FEATURES: - Only write and read a diary. No extra features. - Attach multiple pictures. - The simple and minimalist design will not disturb your thoughts. - The recorded data is saved only in your phone, so your privacy is assured.
Screenshots
Verdict
The clearest difference is iOS requirement: Super Simple Diary at 11.0 against nikki's 15.6. On price, rating, review sentiment and ratings volume 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
Both are free to download. nikki sells 2 one-off in-app purchases and Super Simple Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for nikki against 5.0 for Super Simple Diary. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews are what separate them: 98% of nikki's written reviews are positive against 100% of Super Simple Diary's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on June 9, 2026 and September 24, 2026 respectively.
| Parameter | nikki | Super Simple Diary |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (11 ratings) |
| Positive reviews | 98.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 | 11 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | REVOLAB Inc. | Ryunosuke Nagase |
Customer experience
nikki
Super Simple Diary
In-app purchases
nikki
- 添付画像を10枚にUP$2.99
- 広告非表示（広告を外す）$7.99
Super Simple Diary
- PREMIUM - LIFETIME$5.99
