SENSORCheck for VIEWER vs Epistle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SENSORCheck for VIEWER
This application allows registered business customers to monitor temperature sensors in their environment. It provides a simple interface for viewing real-time data from these sensors.
- View temperature sensor data
- Real-time monitoring
- For registered SENSORCheck customers
- Environmental monitoring
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SENSORCheck Viewer for Business Application is intended for use by registered SENSORCheck customers for the purpose of viewing one or more temperature sensors in their environment.
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: SENSORCheck for VIEWER at none against Epistle's 5. Epistle's advantage is ratings volume (9 vs 1). On price, rating, review sentiment and update cadence 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. SENSORCheck for VIEWER asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for SENSORCheck for VIEWER against 5.0 for Epistle. That said, the two scores are not equally well evidenced: Epistle has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
SENSORCheck for VIEWER ships an update monthly, Epistle every 3 weeks. The most recent releases landed on June 1, 2026 and August 24, 2026 respectively.
| Parameter | SENSORCheck for VIEWER | Epistle |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (9 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 9 — better |
| Update frequency | Monthly | 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 | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 9 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | SENSOR CHECK LLC | Epistle LLC |
Customer experience
SENSORCheck for VIEWER
Epistle
In-app purchases
SENSORCheck for VIEWER
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
Questions
Is SENSORCheck for VIEWER free?
Is Epistle free?
Which has better reviews, SENSORCheck for VIEWER or Epistle?
Do SENSORCheck for VIEWER or Epistle have ads?
Which is updated more often, SENSORCheck for VIEWER or Epistle?
Other comparisons
