A stock alerts app that checks the price while your phone is asleep.
An alert is the one thing a website cannot do for you. A page can show you a price. It cannot interrupt you on a Thursday afternoon to tell you the price moved. That interruption has to come from a server watching while you are not, and from an app that is allowed to ring. So this page is about a job rather than a screen: what StockPlus will watch on your behalf, what it will not, and how quickly the notification actually arrives, which is a different question from how quickly we would like to claim it arrives.
Key takeaways
- Price alerts come in four kinds: price above, price below, percent change above, and percent change below. The percent is the day's change against the previous close, not the move since you set the alert.
- The check runs on our servers once a minute rather than on your phone, so an alert does not depend on the app being open or on iOS and Android choosing to wake it up. Expect roughly one to two minutes between a threshold being crossed and the push landing. Nothing here is tick-level.
- An alert fires once and is then spent. There is no re-arming, and alerts cannot be edited: changing a threshold means deleting the alert and creating it again.
- The free plan holds 3 active price alerts and 1 keyword alert, and a fired alert frees its slot. Pro at $2.99/month removes the price-alert limit and adds SEC filing alerts.
- The alerts a broker cannot send are the actual reason to keep this app: a congressional disclosure touching your watchlist, a fund's 13F, a new SEC filing, or tomorrow's earnings. None of those are a number crossing a number.
- There are no technical triggers. No RSI limit, no moving-average or MACD cross, no golden cross, and no delivery by phone call or SMS. If your alert is a rule rather than a number, a dedicated alerting tool can express it and we cannot.

How it works
Set a threshold, and the direction follows
Type a price and the app works out whether you meant above or below by comparing it with where the stock trades now. For a percent move you tap one of the preset chips rather than typing a number, and the sign selects the type. Those presets come from the sensitivity you picked during onboarding: Calm is 7%, Balanced 5%, Wired 3%. Use an absolute price when you have already decided what you will do at that price, and a percent move when you just want to know that something happened at all.
The check runs on our servers
This is the part most alert products will not say out loud, and it is the only part that decides whether the notification arrives at all. If the price comparison happens on your phone, the operating system gets a vote on whether it runs, and it will not tell you about the windows it skipped. Ours runs off-device once a minute, so the phone's only job is to receive a result. Tickers carrying a live alert are refreshed ahead of everything else, which is what keeps that minute honest.
It arrives as a push, and it is saved either way
Every alert is written to the in-app inbox before the push is attempted, so it is still waiting for you if notification permission is off or if delivery has a bad day. Alerts are live from 4am to 8pm ET on trading days, which includes pre-market and after-hours: a thin early print can trip a threshold, and there is no setting that restricts alerts to regular hours. Overnight and at weekends there is no new price to check, so a gap through your level is reported when the next session opens.
The alerts that are not prices
A price crossing is one kind of event, and your broker can already tell you about it. A congressional disclosure touching a ticker you hold is not, and no threshold you can type anywhere will fire on one. StockPlus can also push a new SEC filing on a watchlist ticker, a reminder the day before a holding reports earnings, and a 13F when a fund you follow reports its quarter. Insider Form 4 filings are the exception: they are a feed you open rather than a push, so do not count on being told about one.
Frequently asked questions
- What is a stock alerts app?
- An app that watches a condition you chose on a stock and tells you when it becomes true. In StockPlus that condition is a price above or below a number you set, or a percent move for the day measured against the previous close. It can also notify you about things that are not prices at all, such as a new SEC filing or a congressional disclosure on something you hold. The alert does not trade for you. It only tells you that the thing you cared about has now happened.
- My broker already alerts me for free. Why would I add another app?
- For a lot of people, you should not. If what you want is to be told when a stock you hold at that broker reaches a price, your broker does exactly that, it is free, and its alerts run on its servers just like ours. Installing a second app for that is not an upgrade, it is another icon on your home screen. Use the broker. The difference shows up as coverage rather than speed or quality. A broker alert is a number crossing a number, so it cannot fire on a member of Congress disclosing a trade in something you own, on a fund you follow filing its 13F, or on an SEC filing landing overnight. Broker alerts also live inside the account and are built around what you hold there, so a watchlist spread over two brokers plus a pension you cannot set alerts on at all does not fit inside any one of them. And when a broker alert arrives it drops you into an account screen, where ours opens the stock next to the analyst consensus, the recent filings and the Pulse Score, which is the difference between knowing a line was crossed and having any idea why. That is the whole case. It is an argument about coverage, and if your holdings sit at one broker and you only ever alert on price, the broker wins on cost, which is zero.
- Do the alerts work when the app is closed?
- Yes, because the price check does not happen on your phone. It runs on our servers, so force-quitting the app does not stop it, and the alert is written to the in-app inbox before the push is even attempted. What can still stop the notification is notification permission being switched off, or Apple and Google having a bad delivery day, and neither of those is ours to guarantee. There is also a timing caveat worth stating plainly: the check runs once a minute against a recently refreshed price, so a crossing is reported shortly after it happens rather than at the exact tick. Anyone promising instant is describing the push, not the detection.
- How many alerts should I actually run?
- Fewer than you would guess. Five to ten live alerts is the practical ceiling for most people, and the threshold matters far more than the count: a 2% alert on a stock that routinely moves 3% in a day will fire every day and train you to swipe it away unread, which is the same as having no alerts at all. The free plan caps you at three active price alerts, which sits below that ceiling, so on free the real question is which three matter most. A fired alert frees its slot, so the three are a working set rather than a permanent choice.
- Can I get alerts for things that are not prices?
- Some, and this is where the honest boundary sits. A keyword alert fires on a news headline rather than a number, and the free plan includes one of them. Congressional disclosure digests and earnings reminders cover your three oldest watchlist tickers on the free plan and all of them on Pro. SEC filing alerts, following one specific member of Congress, and following a fund's 13F are Pro features. Insider Form 4 filings are a feed you open rather than a push, so they are the one thing on this list that will not come and find you.
- What can StockPlus alerts not do?
- Quite a lot, and it is better said here than discovered after installing. There are no technical triggers: no RSI limit, no moving-average or MACD cross, no golden cross, and no volume trigger on an individual alert. Delivery is push and the in-app inbox only, with no SMS, no phone call and no email. Alerts cannot be edited, so changing a threshold means deleting one and creating it again. Each alert fires once and is then spent rather than re-arming. And there are no options, futures or crypto alerts. Stock Alarm covers much of that technical list and can even telephone you, so if your alert is a rule rather than a number, that is the better tool and we would rather say so here.
Set these alerts in Stock+
StockPlus runs these checks on its own servers while your phone is asleep. Setting the first one takes about a minute.
Further reading
- How to set stock price alerts that you will actually act on
Most alerts fail for one reason: they fire on noise. Here is how to pick the trigger type, the threshold, and the number of alerts you can actually live with.
- Why stock price alerts fail when your app is closed
The alert was set correctly and the notification still never came. The reason is structural, and it comes down to one question: which computer was supposed to check the price?
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