Apps you buy once.

Catch: Multiple reviewers who paid the one-time price still report seeing ads and being asked for a separate subscription to keep features like unlimited lives.

Catch: Several reviewers found the interface confusing and struggled to turn off notifications that others found intrusive.

Catch: A handful of reviewers report tracking accuracy getting worse and updates slowing to under once a year, so someone who wants a rapidly evolving app should look elsewhere.

Catch: A handful of reviewers report the app crashing or freezing outright, and others find the interface cluttered and unintuitive for simple tuning.

Catch: Recipe import from certain sites (including Google Docs) can fail or hang, and a few users report crashes on opening.

Catch: Some users report the app crashing or stopping playback mid-session, an issue that reviewers say has persisted for years despite reinstalls.

Catch: Multiple reviewers say some features, including CarPlay access and per-station radar, ended up requiring a separate subscription even after paying for this app, and the privacy policy allows selling sensitive personal data.

Catch: Several reviewers report the app still paywalls extra features and shows ads after the one-time purchase, plus crashes when deleting photos and slow, laggy shooting.

Catch: A few reviewers report the app crashing or becoming unusable when scanning more than a handful of pages at once.

Catch: Multiple recent reviewers say it no longer blocks ads reliably and the app appears to have gone without meaningful updates.

Catch: There's no data export, so if Things doesn't work out for you, you're locked into its format with no easy way to move your tasks elsewhere.

Catch: A small but consistent group of reviewers report sync failures between devices and, in some cases, complete data loss after an update.

Catch: You buy it and it still asks: sixteen of the last two hundred reviews are about sound effects and extras behind a further subscription, and fifteen more describe fighting to get a finished project exported at all.

Catch: A small number of reviewers report the app crashing on open or when saving words, so stability isn't universal.

Catch: Multiple reviewers report in-app promos, upgrade nags, and even subscription paywalls for extra features layered on top of the initial purchase.

Catch: Several reviewers say that despite the one-time purchase, syncing (iCloud, Google Drive) and some other features are gated behind an additional subscription or 'Pro' tier, and importing large batches of files can cause crashes or file corruption.

Catch: Thirty-three of the last two hundred reviews say it is now unusable, nineteen more that importing a clip freezes it. Reviewers openly recommend free alternatives instead.

Catch: Several reviewers describe the UI as confusing or ugly and unlike a standard TI graphing calculator, so it may not be a smooth swap if you're used to that layout.

Catch: Twenty-seven of the last two hundred reviews report crashes, and thirteen more say Google Drive syncing stopped working. That is a lot of risk to carry a day's marking in.

Catch: A couple of reviewers report that severe weather alert notifications can arrive late, after the event has already passed.

Catch: It will not help you identify what is above you tonight, and reviewers report parts of it sitting behind a further subscription despite the purchase.

Catch: A few users report the compass/tracking feature drifting noticeably from the actual sky position, and a handful mention crashes on certain iPad models.

Catch: A small but recurring set of reviews report the app freezing, sometimes requiring a reinstall or device reboot to keep working.

Catch: Several reviewers say a recent update made the interface awkward, and some report it's effectively unusable on macOS due to keyboard input problems.

Catch: Multiple reviewers report a prior version of this app stopped working after an iOS update, with no data export option and no response from customer support to recover years of stored passwords.

Catch: Notifications and alerts are frequently reported as broken or unreliable, and multiple reviewers say emails to support went unanswered.

Catch: Sync between devices (iCloud or Dropbox) doesn't always work reliably, and at least one reviewer reports losing access to their password database after troubleshooting sync issues.

Catch: Exporting, sharing, or backing up setlists is reported to crash the app repeatedly, an issue reviewers say has persisted across updates.

Catch: Sync across iCloud and multiple devices is unreliable for some users, with reports of data going missing or syncing silently breaking after updates.

Catch: Several users report the app crashing or freezing during scanning sessions, and multiple reviewers say customer support is unresponsive if you get locked out of your account.

Catch: A handful of reviewers report the app draining battery heavily after certain updates, so keep it plugged in if you run it all night.

Catch: Several of the reviews praising it as good value cite a price much lower than what it currently costs, so the value case reviewers make doesn't hold at today's price.

Catch: A recurring group of reviews describes crashes, freezing during scans, and iCloud sync that repeatedly fails to save files, with little help from customer support when it happens.

Catch: A handful of users report the app crashing or failing to open, so it's not flawless on stability.

Catch: Some users report the app crashing when they hit record, and others see audio sync issues after exporting, with support emails going unanswered.

Catch: Some reviewers report it stops reliably blocking certain sites (like NYT) after iOS updates, and a few describe DNS filtering freezing or disconnecting when switching networks.

Catch: Sync between devices is unreliable — completing or adding a reminder on one device doesn't always show up on another until you reopen the app.

Catch: Downloading maps for offline use isn't a simple 'draw a box and download' - several reviewers describe it as a tedious pan-and-zoom process, and some say offline downloads didn't work for them at all.

Catch: It is a single effect. Outside of long exposures there is no reason to open it, and you will still want a normal camera app for everything else.

Catch: Several reviewers report the app freezing or crashing outright, and it hasn't seen a real update in years, so bugs tied to older iOS versions may never get fixed.

Catch: At least one reviewer notes the audible pronunciation feature doesn't work offline, so some functionality still needs a connection.

Catch: The one-time purchase unlocks limited functionality; features like full-length radar loops and advanced products sit behind a separate ongoing subscription.

Catch: Syncing between devices via Dropbox frequently breaks or causes conflicts, and a meaningful number of reviewers report crashes that make the iPad app unusable for periods of time.

Catch: Multiple recent reviews say offline mode stopped working after an update, or never worked at all, which is a serious problem for a dictionary app people buy specifically to use offline.

Catch: A recurring minority of reviewers report crashes, including one who says an update wiped out their saved memory work and verse progress.

Catch: Five of the last two hundred reviews say it has gone years without an update, and four more say support has moved on. For a password manager that is the thing to weigh, not a footnote.

Catch: It doesn't use iCloud sync, which one reviewer flagged as missing, so cross-device syncing depends on the developer's own cloud service instead.

Catch: Sixteen of the last two hundred reviews describe syncing destroying their decks, ten call it overpriced and nine call the interface baffling. It is the dearest app here by five times and the lowest rated.

Catch: At least one reviewer wanted to use these sounds as a morning alarm and couldn't, so this isn't built for that use case.

Catch: A handful of users report GPX import breaking after OS updates and app updates occasionally causing freezes, with slow or no response from the developer when things go wrong.

Catch: A significant number of recent reviewers say the offline maps feature itself has stopped working, and multiple reviewers report emailing support and getting no response at all.

Catch: Some users report the app breaking or getting stuck on the startup screen after updates, requiring a fix before it works again.

Catch: Several reviewers report freezing, crashing, or scroll-sync problems when working with non-iCloud cloud storage like Dropbox or Google Drive.

Catch: No metronome, no recording, no history — if you need more than pitch you will end up buying a second app, which costs more than buying one of the combined ones outright.

Catch: A handful of reviewers describe the interface as confusing when they first open it, and a few report crashes, so it isn't guaranteed to be plug-and-play.

Catch: A small but consistent group of reviewers report Safari crashing on certain sites while Wipr is active, and some say ads still get through on streaming apps like Hulu and HBO.

Catch: Syncing is almost evenly split in the reviews — thirty-two say it works, twenty-seven say it does not — and five more say support did not reply when it broke.

Catch: A handful of long-time users report charts disappearing over time and unresponsive customer support when something breaks.

Catch: Some users report the iCloud sync between devices breaking, and at least one reviewer got no response after contacting support about it.

Catch: Sync between devices is a recurring pain point: some reviewers report it breaking entirely or requiring workarounds like stripping special characters from note titles, and a handful mention crashes or freezing once a notebook grows large.

Catch: A few users report it still lets some ads through.

Catch: Some users report the app crashing on launch, and notification/alert configuration is a recurring source of confusion.

Catch: A handful of reviewers report crashes and location tracking freezing or drifting off by miles in recent versions.

Catch: A minority of reviewers report iCloud sync failing or being unreliable, and importing from other tools like CSV files or a Windows version is described as clunky or unsupported.

Catch: The interface is not obvious and reviewers say so, and a few report it freezing partway through rendering, which wastes the whole export.

Catch: Nine of the last two hundred reviews call it unusable outright, and others say a small edit takes an age. At this price that is the gamble.

Catch: Several recent reviews report the app crashing or freezing on a note while tuning, which is exactly when you can't afford it to fail.

Catch: A handful of reviewers report sync failures between devices or the web portal that overwrote or erased data, and some premium sync speed still requires a separate subscription despite the one-time purchase.

Catch: Multiple reviewers report the app crashing or resetting and wiping out their saved passwords entirely, with no help from customer support when it happens.

Catch: Multiple reviewers say ads still appear even after paying for the app, alongside reports of slow loading and freezing.

Catch: Several reviewers report that creating custom tempo playlists requires a separate subscription on top of the purchase price, which contradicts a pure one-time-purchase experience.

Catch: The dearest app here and the least steady with it: thirty-one of the last two hundred reviews report crashes or hangs, and several say support never replied.

Catch: The app hasn't been updated in years, and a few reviewers on newer iPhones (like the iPhone 14) report it crashing or getting stuck.

Catch: Multiple reviews report crashes that corrupt or lose work, particularly during photo import/export or when the device runs low on memory.

Catch: Syncing across devices depends on a Dropbox account, and a couple of reviewers report lost lists after syncing that way.

Catch: Multiple reviewers describe the interface as confusing or clunky at first, so expect a learning curve before it feels usable.

Catch: A recurring minority of reviewers report sync breaking or files failing to stay connected, especially with Dropbox and iCloud folders, plus occasional crashes when switching files.

Catch: Multiple reviewers report crashes on updated OS versions and a cluttered single-window display that's hard to read.

Catch: Some users report the app crashing, including during long recording sessions, so it's risky for anything you can't reshoot.

Catch: Several reviewers call the interface confusing and unintuitive, and the removal of direct Quizlet importing has frustrated people who relied on it.

Catch: A notable share of reviewers report crashes, freezing, or the app failing to work properly on some devices.

Catch: Some users report reminders getting out of sync with the native iOS Reminders app, and a few mention crashes or sync errors on Mac.

Catch: Several reviewers report the app runs slow or freezes when switching options or reviewing shots, and at least one reviewer found the actual captured exposure didn't match what was set.

Catch: Syncing is where it falls down — nineteen of the last two hundred reviews describe it hanging on download or crashing when opening a file it did not create itself.

Catch: Tap to click is not a switch you flip. You assemble it from tap triggers yourself, tap-to-drag takes extra work, and forum users report a slight delay because a tap only fires when the finger lifts.

Catch: By its own developer's account it can stop responding after the Mac sleeps until you switch it off and on, gestures cannot be turned off one at a time, and it never updates itself.

Catch: It is an early release with fewer gesture types than TappitX or TapToClick Pro, and there is no free trial of its own; the trial on offer is for MagicMouseTap, which shares its tap engine.

Catch: It is brand new and anonymous: the changelog has a single undated release and the site names no developer, so there is no track record to judge how it will handle the next macOS update.

Catch: The price is not on the website at all, only at checkout, and each licence covers a fixed number of Macs, so check both before the trial runs out.