LemonInk vs VitalSource Digital Sync
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026 for LemonInk, Oct 13, 2026 for VitalSource Digital Sync.
The short answer
- LemonInk lists 9 features VitalSource Digital Sync’s listing doesn’t mention, including Audio, Custom download pages, Download limits.
Head to head
Ebook Sales & Watermarking (EPUB, MOBI and PDF)
- United States
- Germany
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
Basic Plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureBook publishers and authors can can benefit from selling their books directly to customers. Thanks to LemonInk it's possible to do that with ebooks as well. LemonInk will securely host and manage your ebook files and allow you to match them with products in your store. Whenever a customer buys an ebook, we'll create a unique copy, digitally signed with their data - both visibly and invisibly.
Enhance your Shopify store with Web2Market's integration, seamlessly connecting to VitalSource for efficient digital content delivery. This integration unlocks VitalSource's capabilities in providing accessible, affordable, and impactful learning resources globally.
- Great support (email us!)
- Simple pricing: pay for each sale, no additional fees
- Customize the watermark so it's just perfect
- Security: your ebooks are never shared without unique digital signature
- Sell a wide range of digital content quickly and easily with DRM protection.
- Sell More: VitalSource's data dashboards provide insights on reader engagement.
- Enhanced User Experience: Intuitive access to digital purchases for users.
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  LemonInk |  VitalSource Digital Sync |
|---|---|---|
| Detected stores | 12 | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Media, Arts & Entertainment, Apparel & Accessories | Not published |
| Top store countries | United States, Germany, Australia | Not published |
Reviews
| Measure | LemonInk | VitalSource Digital Sync |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 11 | Not published |
| New reviews, 28 days | 1 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | LemonInk | VitalSource Digital Sync |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $249/month |
| Longest free trial | Not listed | 7 days |
| Plans listed | 1 | 1 |
Listing
| Measure | LemonInk | VitalSource Digital Sync |
|---|---|---|
| Shopify category rank | #26(ahead) | #97 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Feb 2, 2021 | Nov 28, 2023 |
| Languages | 1 | 1 |
| Developer | nibynic s.c. Paweł Bator, Piotr Bator | Web 2 Market |
FAQ
LemonInk and VitalSource Digital Sync: common questions
- What features does each app list that the other doesn’t?
- LemonInk lists 9 the others don’t mention, such as Audio, Custom download pages, Download limits, Ebooks. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 8, 2026 for LemonInk, Oct 13, 2026 for VitalSource Digital Sync; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 8, 2026 for LemonInk, Oct 13, 2026 for VitalSource Digital Sync. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.