Instant Sales Notifications vs SellKit Spend Countdown
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Instant Sales Notifications, Feb 19, 2026 for SellKit Spend Countdown.
The short answer
- Only Instant Sales Notifications lists a free plan.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Basic Plan
- · Default Animation
- · Default Layout
- · General Configuration
- · Mobile First
Premium Plan
- · Choose from different animations
- · Choose from different layouts
- · General Configuration
- · Match the look and feel of your store
- · Mobile First
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every feature
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 |  Instant Sales Notifications |  SellKit Spend Countdown |
|---|---|---|
| Detected stores | Not published | 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 | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Instant Sales Notifications | SellKit Spend Countdown |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 6 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Instant Sales Notifications | SellKit Spend Countdown |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $6.99/month | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | 2 | Not published |
Listing
| Measure | Instant Sales Notifications | SellKit Spend Countdown |
|---|---|---|
| Shopify category rank | #263 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 2, 2019 | Dec 31, 2021 |
| Languages | Not published | Not published |
| Developer | Scale | SellKit |
FAQ
Instant Sales Notifications and SellKit Spend Countdown: common questions
- Is Instant Sales Notifications or SellKit Spend Countdown cheaper?
- Only Instant Sales Notifications lists a free plan. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- 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 Oct 13, 2026 for Instant Sales Notifications, Feb 19, 2026 for SellKit Spend Countdown; 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 Oct 13, 2026 for Instant Sales Notifications, Feb 19, 2026 for SellKit Spend Countdown. 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.