# Height Check vs Message Diary

The clearest difference is rating: Height Check at 5.0 against Message Diary's 4.5. Height Check also leads on monetization model (free vs free with in-app purchases). Message Diary's advantage is update cadence (every 3 days vs every 8 days). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Height Check sells 2 in-app purchases, starting at $0.99 per month and Message Diary sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Height Check holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

Height Check ships an update every 8 days, Message Diary every 3 days. The most recent releases landed on October 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Height Check | Message Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/height-check/id6758106513/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/message-diary-remind/id6769179581/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 42 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ni Yan](https://appshunter.io/developer/1037384760) | [David Parker](https://appshunter.io/developer/821839348) |

## What reviewers say

### Height Check

[App page](https://appshunter.io/ios/app/height-check/id6758106513)

Transform your compatible iPhone or iPad into a height measuring tool. Point the camera at a person, and the app instantly displays their height in meters or imperial units. Save your measurements for future reference without needing any extra equipment.

**Highlights:** Instant height measurement, Camera-based detection, Supports meters and imperial units, Save and reference measurements, No extra tools required

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Height Measure | $0.99 | per month |
| Lifetime Usage | $9.99 | one-time |


### Message Diary

[App page](https://appshunter.io/ios/app/message-diary-remind/id6769179581)

This app helps you save, organize, and revisit meaningful text messages and quotes. It provides daily inspiration through a home screen widget and serves as a digital diary for encouragement during challenging times.

**Highlights:** Save meaningful text messages, Organize with custom categories and tags, Rediscover forgotten memories, Home screen widget for daily inspiration, Secure and private storage, Focuses on preserving impactful words

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $24.99 | per year |
| Lifetime Pro | $39.99 | one-time |


## Frequently asked questions

### Is Height Check free?

Height Check is free to download, with in-app purchases available.

### Is Message Diary free?

Message Diary is free to download, with in-app purchases available.

### Which has better reviews, Height Check or Message Diary?

Height Check is rated higher. Height Check averages 5.0 out of 5 from 2 ratings, while Message Diary averages 4.5 from 4 ratings.

### Do Height Check or Message Diary have ads?

Neither Height Check nor Message Diary shows ads.

### Which is updated more often, Height Check or Message Diary?

Height Check ships an update every 8 days, and Message Diary every 3 days. Most recently, Height Check was updated on October 8, 2026 and Message Diary on September 22, 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.*