SampleChain: COC Field Log
Samples, Custody & PDF Forms
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Build chain-of-custody forms in the field: samples, custody events and lab-ready COC PDFs - no double entry, no connection needed.
SampleChain is an offline chain-of-custody worksheet for environmental and industrial-hygiene field work.
COC FORMS IN THE FIELD
- Create a COC with client, site, laboratory, sampler and cooler details
- Add sample rows fast: sample ID, matrix, location, collection time, containers, preservation and requested analysis
- Free for 3 COC records (10 samples each) - every feature included
CUSTODY THAT HOLDS UP
- Relinquished, Received and Shipped events with names, initials and times - entered by you
- Saved events are never overwritten: corrections are appended as their own entries, so your sequence stays intact
REUSE WHAT YOU TYPE
- Lab presets and organization defaults fill repeated fields automatically
LAB-READY OUTPUT
- COC PDF with the full sample table and custody sequence
- CSV export of samples for your project files
PRIVATE BY DESIGN
- 100% offline. No account, no cloud, no analytics
PRICING
Free for up to 3 COC records with 10 samples each; existing records stay viewable and exportable forever. Pro (unlimited COCs and samples) is an auto-renewing subscription - $19.99/month or $149.99/year - with a 7-day free trial. It renews unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in Settings > Apple ID > Subscriptions.
For record-keeping only. Entries are user-reported and not identity-verified.
Privacy Policy: https://goonobu-dot.github.io/batch18-pages/samplechain/privacy.html
Support: https://goonobu-dot.github.io/batch18-pages/samplechain/support.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, SHINOBU MIYAHIRA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SHINOBU MIYAHIRA
- Size
- 947.2 KB
- Category
- Business
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Monthly $19.99
- Pro Yearly $149.99
- Copyright
- © 2026 SHINOBU MIYAHIRA