Letterloop vs Book Bites Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Letterloop
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.
- Group newsletter creation
- Customizable questions
- Automated newsletter compilation
- User-submitted questions
- Archived newsletters
- Flexible scheduling
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Letterloop is a fun way to have a group newsletter without the work. You pick the questions for your group to answer, then Letterloop creates a fun and beautiful newsletter with everyone's replies. All you need is to do is invite your people! How does Letterloop work? We crafted a set of questions designed to spark fun and thoughtful replies. The questions range from updates about your week to thoughts on identity, life stories, and personal philosophies. Each newsletter cycle, we'll suggest a few questions for you. You can always swap questions or add your own. Plus, members of your newsletter can ask their own questions that you can include too. Who uses Letterloop? Groups of all kinds use Letterloop to grow close together, even when far apart. - Families - Friends - Teams - Universities - Clubs & Masterminds - Youth Groups - Communities Why Letterloop? - Stay in touch, grow closer together, and discover things you never knew with the people in your life - Let everyone ask and answer fun & interesting questions that don't normally come up in group chats or video calls - Customize your Letterloop's content, schedule, and settings to match your group's interests and personalities - Reschedule, pause, or extend a Letterloop issue as needed - Access unlimited archives of your Letterloop's historical issues - You're always in full control of your Letterloop data — no ads, ever Letterloop Subscription - You may purchase an auto-renewing subscription through an In-App Purchase. - Subscriptions include Letterloop Monthly ($5.00/month) and Letterloop Annual ($50.00/year) - Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. - Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase Privacy Policy: https://www.letterloop.co/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Book Bites Lab
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This is a book summery app, users can read the summery of the book instead reading all. Privacy Policy: https://www.bookbiteslab.com/english-privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Letterloop at Free against Book Bites Lab's $1.99. Letterloop also leads on chart position (#101 vs unranked). Book Bites Lab's advantage is iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases 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
Letterloop is free to download; Book Bites Lab costs $1.99 up front. Letterloop sells 2 in-app purchases, starting at $5.00 per month and Book Bites Lab sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | Letterloop | Book Bites Lab |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (774 ratings) — better | — |
| Positive reviews | 91.2% of reviews | — |
| Number of ratings | 774 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Best chart rank | #101 — better | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 78 MB | 39 MB |
| Age rating | 4+ | 17+ |
| Developer | Letterloop | Innovation Platforms LLC |
Bugs and requests
Letterloop
Reported bugs
2 issues- Login and subscription issues
- Functionality problems after initial free period
Requested features
5 requests- 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
Book Bites Lab
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Letterloop
- Monthly Subscription$5.001 Month
- Annual Subscription$50.001 Year
Book Bites Lab
- Monthly Subscription$1.991 Month
- Yearly Subscription$19.991 Year







