Diode Collab vs Epistle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diode Collab
This app offers a secure, self-managed alternative to cloud storage and team communication tools. It utilizes a peer-to-peer network, ensuring your data remains under your control without relying on third-party servers. Share notes, messages, and files with groups privately and securely.
- Self-managed secure data storage
- Peer-to-peer network
- Private message sharing
- Secure file sharing
- Group collaboration
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Diode Collab is a self-managed secure replacement for Slack and Google Drive. Instead of uploading private data to 3rd party servers Diode is using a peer-to-peer network to keep all your data in your control. Share notes, messages and files with your groups of Friends, or your Customers without worrying about data locations. You can be sure that your messages and are never stored on any servers.
Epistle
This app facilitates communication and financial support for missionaries. It allows for easy sharing of ministry updates with photos and videos, automatically sending them to ministry partners who can respond with engagement. It simplifies the process of connecting with supporters and managing ministry outreach.
- Share ministry updates with photos and video
- Automatic update distribution to partners
- Ministry partner engagement (likes, prayers, comments)
- Manage ministry sites
- Connect with ministry partners
- Automated email platform
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Epistle is used by thousands of missionaries to stay connected and funded. It has never been easier to share ministry updates with photos and video. No more hassle with email templates, scheduling, etc. Epistle sends your updates to ministry partners, automatically, using our world-class email platform and gives them the opportunity to respond with likes, prayers and comments. Both missionaries and ministry partners love Epistle: "The greatest thing I could do for my ministry partners." "HIGHLY RECOMMENDED! Do the two week trial." Supporter: "I feel confident I'm investing well." With paid Epistle subscription you can manage your Epistle site, send updates, and connect with ministry partners. Ministry partners can access Epistle sites to read and respond to your updates without payment. Terms of Use: https://www.epistle.org/terms-of-use/
Screenshots
Verdict
The clearest difference is rating: Epistle at 5.0 against Diode Collab's 4.4. Epistle also leads on review sentiment (100% vs 67%) and update cadence (every 3 weeks vs every 2 months). Diode Collab's advantage is in-app purchases (none vs 5). On price, ratings volume, ads 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. Epistle sells 5 in-app purchases, starting at $17.99 per month. Diode Collab asks for nothing beyond the download.
Epistle holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 8 and 9 respectively. Written reviews point the same way: 67% of Diode Collab's written reviews are positive against 100% of Epistle's.
Diode Collab ships an update every 2 months, Epistle every 3 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.
| Parameter | Diode Collab | Epistle |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (8 ratings) | 5.0 (9 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 | 9 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 32 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Diode | Epistle LLC |
Customer experience
Diode Collab
Epistle
In-app purchases
Diode Collab
No in-app purchases
Epistle
- One Epistle Site$17.991 Month
- Two Epistle Sites$39.991 Month
- Three Epistle Sites$59.991 Month
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- Four Epistle Sites$79.991 Month
- Five Epistle Sites$89.991 Month
