nikki vs Mankiw
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
Mankiw
This app provides real-time GPS tracking for personnel or goods. It offers features like location history, electronic fencing, and safety monitoring for children or valuable items.
- Real-time GPS tracking
- Location history records
- Electronic fence creation
- Personnel and goods safety monitoring
- Child safety features
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Provide personnel or goods location query service, the GPS real-time tracking, the GPS device history records, electronic fence and other functions, for the protection and care of children or goods safety.
Screenshots
Verdict
nikki and Mankiw both sit at 5.0 stars, but that hides the real split: 98% of nikki's written reviews are positive against 0% of Mankiw's. Mankiw's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, rating, ratings volume 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
Both are free to download. nikki sells 2 one-off in-app purchases. Mankiw asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for nikki against 5.0 for Mankiw. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews are what separate them: 98% of nikki's written reviews are positive against 0% of Mankiw's.
nikki ships an update every 2 months, Mankiw monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | nikki | Mankiw |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (2 ratings) |
| Positive reviews | 98.1% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 7.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | REVOLAB Inc. | 文清 毕 |
Customer experience
nikki
Mankiw
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
Mankiw
No in-app purchases
