# MapplerK2 vs 3LINEDIARY

The clearest difference is review sentiment: 3LINEDIARY at 85% against MapplerK2's 20%. 3LINEDIARY also leads on rating (4.5 vs 3.5) and update cadence (fortnightly vs every 2 months). MapplerK2's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 3LINEDIARY sells 1 in-app purchase, starting at $2.99 per month. MapplerK2 asks for nothing beyond the download.

3LINEDIARY holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: 3LINEDIARY has 47 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 20% of MapplerK2's written reviews are positive against 85% of 3LINEDIARY's.

MapplerK2 ships an update every 2 months, 3LINEDIARY fortnightly. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | MapplerK2 | 3LINEDIARY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/mapplerk2/id1057844144/reviews) | **[4.5 (47 ratings)](https://appshunter.io/ios/app/3linediary/id1436460302/reviews)** |
| Number of ratings | 4 | **47** |
| Positive reviews | 20.0% of reviews | **84.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 66 MB | 88 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Wansoo Im](https://appshunter.io/developer/577146208) | [(주)윌림](https://appshunter.io/developer/1436460301) |

## What reviewers say

### MapplerK2

[App page](https://appshunter.io/ios/app/mapplerk2/id1057844144)

This app allows users to create and manage custom maps for data collection. It enables community members to map amenities and concerns, and organizations to visualize and share data with colleagues and clients.

**Highlights:** Customizable smart phone-based mapping, Community participatory mapping, Map amenities and concerns, Upload real-time data from smartphone, Add text, files, photos, videos, audio to map points, Customize data display, Share interactive maps

**Features:** macOS Compatibility

**In-app purchases:** none


### 3LINEDIARY

[App page](https://appshunter.io/ios/app/3linediary/id1436460302)

This app offers a simple journaling experience focused on positivity and mindfulness. Capture daily thoughts with brief entries and optional photos, create multiple private or public diaries, and connect with a supportive community through shared writing and engagement.

**Highlights:** Three-line daily entries, Optional photo attachments, Multiple private diaries, Public diary sharing (anonymous option), Community engagement (likes, comments), Shared diaries with friends/family, Customizable reminders

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ‘Friends' Subscription | $2.99 | per month |


## Frequently asked questions

### Is MapplerK2 free?

MapplerK2 is free to download, with no in-app purchases.

### Is 3LINEDIARY free?

3LINEDIARY is free to download, with in-app purchases available.

### Which has better reviews, MapplerK2 or 3LINEDIARY?

3LINEDIARY is rated higher. MapplerK2 averages 3.5 out of 5 from 4 ratings, while 3LINEDIARY averages 4.5 from 47 ratings.

### Do MapplerK2 or 3LINEDIARY have ads?

3LINEDIARY shows ads; MapplerK2 does not.

### Which is updated more often, MapplerK2 or 3LINEDIARY?

MapplerK2 ships an update every 2 months, and 3LINEDIARY fortnightly. Most recently, MapplerK2 was updated on November 11, 2026 and 3LINEDIARY on November 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*