BT DO vs Epistle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BT DO
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A Pump Monitoring app designed by BridgeTree DCC Simplify your pump monitoring tasks with BT DO, the essential app for Design Outreach NGO. This user-friendly tool lets you effortlessly create and submit installation, community assessment, and maintenance reports on the go. What sets BT DO apart is its flexibility—it works seamlessly both online and offline. When offline, the app smartly stores data, ensuring you can continue your work in areas with limited connectivity. Once back online, BT DO automatically syncs all your collected data with the web application, providing real-time updates and centralised information for efficient project management. BT DO isn't just an app; it's your solution for streamlined pump monitoring. Experience the convenience of data collection and synchronisation in one powerful tool. Download BT DO now and elevate your NGO's monitoring efforts.
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 in-app purchases: BT DO at none against Epistle's 5. Epistle's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 15.5). On price, 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. BT DO asks for nothing beyond the download.
BT DO ships an update every 2 months, Epistle every 3 weeks. The most recent releases landed on September 9, 2026 and August 24, 2026 respectively.
| Parameter | BT DO | Epistle |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | E2 infosystems | Epistle LLC |
In-app purchases
BT DO
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









