Your phone is your best restock weapon. Push notifications reach you anywhere, and the best restock apps can alert you within seconds of an item coming back in stock. But not all apps are created equal. Some are fast but limited. Some track everything but send alerts too slowly. Here is a detailed breakdown of the best restock alert apps available for iOS and Android in 2026, tested with real restock events.
App Comparison Overview
| App | iOS | Android | Alert Speed | Products Tracked | Free Tier Limits | Paid Price |
|---|---|---|---|---|---|---|
| HotStock | Yes | Yes | 5-15 sec | Electronics, consoles, GPUs | 3 products | $5.99/mo |
| Stock Informer | Yes | Yes | 10-30 sec | Broad (electronics, toys, etc.) | Unlimited (with ads) | $3.99/mo |
| NowInStock | No | Yes | 15-45 sec | Electronics, gaming | Unlimited | Free (ad-supported) |
| Keepa | Yes | Yes | 1-5 min | Amazon only | Unlimited | Free (basic) |
| ShopSavvy | Yes | Yes | Variable | General retail | Unlimited | Free |
| Alerts for Reddit | Yes | Yes | 1-2 min | Depends on subreddits | Unlimited | $1.99 one-time |
Detailed Reviews
HotStock - Best Overall
HotStock has established itself as the go-to restock alert app and for good reason. It consistently delivers the fastest push notifications of any app in this roundup, and its interface is clean and focused.
How it works:
- Search for a product or browse by category
- Tap “Track” to add it to your watchlist
- When the item comes back in stock at any supported retailer, you get a push notification
- Tap the notification to go directly to the product page
Alert speed testing results:
We monitored five restock events across different products and measured HotStock’s notification time against when the product actually became purchasable:
| Event | Product | Retailer | Time to Alert |
|---|---|---|---|
| Feb 2 2026 | Switch 2 | Best Buy | 8 seconds |
| Feb 8 2026 | RTX 5080 | Amazon | 12 seconds |
| Feb 14 2026 | PS5 Pro Bundle | Walmart | 6 seconds |
| Feb 22 2026 | Switch 2 | Target | 14 seconds |
| Mar 1 2026 | RTX 5070 Ti | Newegg | 11 seconds |
Average alert time: 10.2 seconds. This is fast enough to compete for most restocks, especially those that stay in stock for 30+ seconds.
Free tier limitations: The free tier allows tracking only 3 products simultaneously. For casual use (tracking one console and one GPU, for example), this is sufficient. The $5.99/month premium tier unlocks unlimited tracking, faster notification priority, and removes ads.
Pros:
- Fastest alerts in testing
- Clean, focused interface
- Deep link to product page from notification
- Covers most major retailers in the US, UK, and EU
Cons:
- Free tier limited to 3 products
- No price tracking or history
- Notifications can be delayed on Android if battery optimization is enabled (see tips below)
Stock Informer - Best Free Option
Stock Informer offers a more generous free tier than HotStock, with unlimited product tracking and support for a wider range of products including toys, home goods, and sporting equipment. The trade-off is slightly slower alert times.
Key features:
- Unlimited product tracking on the free tier
- Browser-based stock checking in addition to push notifications
- Community-driven stock reports where users can confirm availability
- Email alerts as a backup to push notifications
- Historical stock data showing restock frequency patterns
Where Stock Informer excels:
The historical data feature is uniquely valuable. For each product, Stock Informer shows a timeline of past restocks including which retailer, what time, and how long the item remained in stock. This lets you identify patterns. For example, if Best Buy has restocked the Switch 2 every Thursday at 10 AM for three weeks in a row, you can be ready.
Alert speed: 10-30 seconds in our testing, which is reliable but noticeably slower than HotStock for the most competitive drops.
Pros:
- Unlimited free tracking
- Historical restock data is invaluable for planning
- Broader product category coverage
- Community stock confirmations reduce false alerts
Cons:
- Slower alerts than HotStock
- Ad-heavy free experience
- Interface feels cluttered compared to HotStock
- Community reports can occasionally be inaccurate
NowInStock - Best for Android Users
NowInStock is Android-only (their iOS app was discontinued in 2024) but it remains one of the most comprehensive free stock trackers available. It covers a wider range of products than any other app in this list.
Unique features:
- Product category pages that show real-time stock status across all major retailers simultaneously
- No account required for basic tracking
- Browser integration that auto-refreshes product pages at configurable intervals
- Discord webhook integration for sending alerts to your own Discord server
Limitations:
- Android only
- Slower alert times (15-45 seconds)
- Less polished interface
- Push notification reliability varies by Android device manufacturer
Keepa - Best for Amazon-Only Shopping
If your restock targets are primarily on Amazon, Keepa is indispensable. It is not a traditional restock alert app but rather a comprehensive Amazon price and stock tracker that also sends availability alerts.
What Keepa does that others do not:
- Complete price history for every Amazon product, going back years
- Tracks all seller types: Amazon, third-party FBA, and third-party merchant
- International Amazon marketplace tracking (US, UK, DE, FR, JP, etc.)
- Alerts based on price thresholds, not just stock status
- Lightning deal and coupon notifications
Setting up Keepa for restock alerts:
- Install the Keepa app and create an account
- Navigate to the product you want to track
- Set a price alert at or slightly above the retail price
- When the item comes back in stock at Amazon’s price, you get a notification
The reason to set a price alert rather than just a stock alert is that Amazon products can show as “in stock” from third-party sellers at inflated prices. A price-based alert ensures you are notified only when the item is available at a reasonable price.
Limitation: Keepa tracks Amazon only. If you are looking for restocks at Best Buy, Walmart, Target, or other retailers, you need a different app.
Alerts for Reddit - The Hidden Gem
This is an unconventional pick, but hear us out. Subreddits like r/buildapcsales, r/NintendoSwitchDeals, and r/consoledeals are some of the fastest sources of restock information on the internet. Community members post deals and restocks within seconds, often faster than automated monitoring services.
The “Alerts for Reddit” app (iOS and Android) lets you set keyword-based push notifications for specific subreddits. Configure it to alert you when someone posts a title containing “Switch 2” in r/NintendoSwitchDeals, or “5080” in r/buildapcsales.
Setup example:
- Subreddit: r/buildapcsales
- Keyword: “5080” OR “5070”
- Alert type: Push notification
- Frequency: Instant
Pros:
- Extremely fast because humans post faster than many automated monitors
- Free or very cheap ($1.99 one-time)
- Community vetting means fewer false alerts
- Often includes coupon codes and bundle deals in comments
Cons:
- Dependent on community activity (less reliable at odd hours)
- Requires manual subreddit and keyword configuration
- Can generate noise from discussion posts that happen to contain your keywords
Critical Setup Tips for All Apps
Disable Battery Optimization (Android)
This is the most common reason for delayed notifications on Android. Manufacturers like Samsung, Xiaomi, OnePlus, and Huawei aggressively kill background apps to save battery. You must exempt your restock alert apps from battery optimization:
- Go to Settings > Battery > Battery Optimization
- Find your restock app in the list
- Select Don’t Optimize or Unrestricted
On Samsung devices, also add the app to your Unmonitored Apps list under Device Care. Without this step, alerts can be delayed by minutes or not delivered at all.
Enable Critical Alerts (iOS)
On iOS, enable notifications for your restock app and set the alert style to Persistent Banner in Settings > Notifications. If the app supports it, enable Time Sensitive Notifications which bypass Focus Mode and Do Not Disturb.
Use Multiple Apps
No single app catches every restock. The combination of HotStock (for speed) and Stock Informer (for breadth and historical data) covers most bases. Add Keepa if you shop primarily on Amazon, and Alerts for Reddit as a community-sourced backup.
Keep Your Phone on Wi-Fi or Strong Cellular
Push notifications require an active internet connection. If your phone is on a weak cellular signal, notification delivery can be delayed by 10-30 seconds, which is enough to miss a competitive drop. At home, stay on Wi-Fi. When out, ensure you have a reliable LTE or 5G connection.
Recommendation Summary
| Use Case | Recommended App |
|---|---|
| Overall best | HotStock ($5.99/mo) |
| Best free option | Stock Informer |
| Amazon-focused shopping | Keepa |
| Android users wanting free tracking | NowInStock |
| Power users wanting community intel | Alerts for Reddit + HotStock |
| Tracking 1-2 specific items casually | HotStock free tier |
The right app depends on what you are tracking, how competitive the drops are, and how much you are willing to pay. For most people, starting with Stock Informer (free, unlimited tracking) and upgrading to HotStock Premium if you are consistently missing drops by seconds is the smart progression.
