# Letterloop vs KMK Optometry Pages

The clearest difference is review sentiment: Letterloop at 91% against KMK Optometry Pages's 33%. Letterloop also leads on rating (4.9 vs 1.8) and ratings volume (748 vs 6). KMK Optometry Pages's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Letterloop sells 2 in-app purchases, starting at $5.00 per month. KMK Optometry Pages asks for nothing beyond the download.

Letterloop holds the better App Store score, 4.9 against 1.8. That said, the two scores are not equally well evidenced: Letterloop has 748 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 91% of Letterloop's written reviews are positive against 33% of KMK Optometry Pages's.

Letterloop ships an update every 2 weeks, KMK Optometry Pages every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Letterloop | KMK Optometry Pages |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (748 ratings)](https://appshunter.io/ios/app/letterloop-group-newsletters/id6468623700/reviews)** | [1.8 (6 ratings)](https://appshunter.io/ios/app/kmk-optometry-pages/id6745395673/reviews) |
| Number of ratings | **748** | 6 |
| Positive reviews | **91.2% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Subscription | **Free** |
| Best chart rank | **#110** | — |
| Size | 78 MB | 77 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Letterloop](https://appshunter.io/developer/1710306872) | [KMK Optometry](https://appshunter.io/developer/1645627929) |

## What reviewers say

### Letterloop

[App page](https://appshunter.io/ios/app/letterloop-group-newsletters/id6468623700)

**Currently charting:** #110 Top Grossing · Book (US App Store)

Easily create and share group newsletters with friends, family, or teams. The app provides curated questions to spark engaging replies, automatically compiling them into a beautiful newsletter. Stay connected and discover more about the people in your life.

**Highlights:** Group newsletter creation, Customizable questions, Automated newsletter compilation, User-submitted questions, Archived newsletters, Flexible scheduling

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $5.00 | per month |
| Annual Subscription | $50.00 | per year |

**What reviewers like**

- 🤗 Excellent way to stay connected
- 👥 Helps maintain long-distance friendships
- 🎨 Customizable and user-friendly
- 💕 Brings families and friends closer
- 🗓️ Convenient monthly updates

**What reviewers complain about**

- 💰 Subscription cost not transparent
- 🔒 Paywall after initial free issues
- 🤖 Lack of Android support
- 🐛 Technical issues and bugs

**Reported bugs**

- Login and subscription issues
- Functionality problems after initial free period

**Requested features**

- Ability to add multiple photos per issue
- Option to link external content (videos, podcasts, etc.)
- Ability to caption photos
- Save progress when answering questions
- Improved comment section layout


### KMK Optometry Pages

[App page](https://appshunter.io/ios/app/kmk-optometry-pages/id6745395673)

This e-reader app helps optometry students study more efficiently. It offers a seamless reading experience for digital textbooks, an audiobook feature for hands-free learning, and AI-powered tools for summaries, clarifications, and comprehension questions.

**Highlights:** Seamless e-reader experience, Built-in audiobook feature, AI-powered summaries, AI-powered clarifications, AI-generated comprehension questions, Access to digital textbooks

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

**In-app purchases:** none


## Frequently asked questions

### Is Letterloop free?

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

### Is KMK Optometry Pages free?

KMK Optometry Pages is free to download, with no in-app purchases.

### Which has better reviews, Letterloop or KMK Optometry Pages?

Letterloop is rated higher. Letterloop averages 4.9 out of 5 from 748 ratings, while KMK Optometry Pages averages 1.8 from 6 ratings.

### Do Letterloop or KMK Optometry Pages have ads?

Neither Letterloop nor KMK Optometry Pages shows ads.

### Which is updated more often, Letterloop or KMK Optometry Pages?

Letterloop ships an update every 2 weeks, and KMK Optometry Pages every 2 months. Most recently, Letterloop was updated on October 25, 2026 and KMK Optometry Pages on October 24, 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.*