Your Book Nest
A Sunday school library is a small, trusting thing - a shelf of picture books and levelled readers that families borrow between sessions and bring back the next week. One volunteer usually runs it, often the same person teaching the class. So the software that fits is not a school ILS. It is whatever tracks who has which book, when it is due, and lets you hand out three copies of the same favourite without losing track.
Two things shape the shortlist for this shelf specifically. First, kids' books resist barcodes - board books and thin picture books frequently carry no scannable ISBN, so a phone-camera scanner earns its keep far less here than in an adult collection. Second, popular titles arrive in multiples: three copies of the same bedtime book, five identical readers for a class. Tracking duplicate copies without cataloguing each one from scratch is the quiet make-or-break feature.
None of these tools is aimed at Sunday schools by name - no dedicated children's-ministry book-lending software exists. The shortlist is the general small-library field - the same field a preschool or nursery book-bag shelf draws on - weighed against what a kids' church shelf actually does.
Your Book Nest
Built for exactly this size of shelf. Free under 100 items and 50 patrons, then a flat $60 a year with no per-volunteer charge, so a Sunday school library never outgrows the free tier by accident and never faces a per-seat bill.
It runs in a browser with nothing to install, and needs no scanner. Every copy gets a generated three-word code, like oak-bat-tree, printed on a label you run off on blank sheets - read it off the cover and type it, which is the honest fix for board books that have no barcode to scan. Duplicate picture books are the normal case, not a workaround: add a title once and give it as many copies as you own, each its own record with its own history, so returning one of your three copies of the same book closes the right loan.
The borrower is simply a family or child's name you type in - no account required. You can optionally give a family a read-only sign-in to see what they have out, but there is no public catalogue for the wider congregation to browse from home, which TinyCat and Librarika do offer. There are no fines to chase, which suits a high-trust kids' shelf. Overdue and due-soon reminder emails are not yet available, so for now you watch the overdue list yourself rather than the software chasing families automatically.
The home page is a live demo - add a picture book, give it two copies, and lend them to two families, with no account and no card. For the wider church setting this is the kids'-shelf cut of best church library software.
TinyCat (LibraryThing)
Purpose-built for small and religious libraries, and a genuinely strong fit. From $3 a month for volunteer libraries (about $36 a year for a small church shelf), it gives you a member-searchable online catalogue families can browse from home, email overdue reminders and optional barcode scanning - several things Your Book Nest does not do. Its LibraryThing catalogue data is deep, with covers and series pulled in automatically.
Two caveats matter for a kids' shelf. You catalogue in LibraryThing and circulate in TinyCat, so it is two systems to learn. And TinyCat has no copies management - to lend three copies of the same picture book you catalogue each physical copy as its own record, entered by hand, which is why tracking multiple copies of the same book is worth understanding before you commit. Best if a searchable-from-home catalogue matters more than simplicity.
Libib
Free to catalogue up to 5,000 items, with a clean, modern interface and phone-camera barcode scanning as its headline. Lending, patrons and due dates all sit behind Pro at $9 a month or $99 a year, so the free tier catalogues but does not actually lend.
The barcode scanning is its main draw, and it is exactly the feature a kids' shelf leans on least - board and picture books often have no scannable ISBN, so much of a children's collection is hand-entered anyway. Reasonable if you already like Libib for a home collection, but the paid lending gate and the softened scanning edge make it a weaker fit here than the price suggests.
Librarika
A genuinely free, full library system that runs in the browser, with a member-searchable online catalogue - the best zero-budget pick if you want families to search the shelf from home. The free tier covers up to 2,000 catalogue records; the first paid step is $139 a year. Cataloguing is mostly manual, the interface is dated, and support is email only. If a searchable public catalogue is the priority and the budget is zero, it is hard to beat. There is a fuller head-to-head in Librarika versus Your Book Nest.
Google Sheets or a card box
Free, instant, and no learning curve. Plenty of Sunday schools start with a book card in a basket or a shared spreadsheet with columns for title, borrower and due date, and for a brand-new shelf under about 50 books that is a perfectly sensible place to begin.
It stops coping past 50 books and on returns - no overdue prompt, and duplicate copies blur into one line. The trade-offs, and when to move on, are in can I use a spreadsheet to run a small library.
One thing to watch when searching
Searching "Sunday school check-in" turns up KidCheck, Kidddo and similar - those are child safety and check-in systems that track kids arriving at the classroom, not books leaving the shelf. Different job entirely. If you want to track lending, none of the check-in tools will help.
How to choose
For a shelf of a few dozen to about 100 books run on trust, the honest answer is the simplest tool that tracks copies and due dates without a scanner or a monthly bill - which is where Your Book Nest sits, free at that size. If a public catalogue families can search from home matters more than simplicity, Librarika (free) or TinyCat (from $3 a month) earn their place. And if you have fewer than 50 books and are just testing the water, a spreadsheet or a card box is fine until it isn't.
Whatever you pick, the setup story is the same one covered in how to run a Sunday school lending shelf and how to set up a church library from scratch.
