Comparison

JavaSnipt vs DataLeft

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JavaSnipt

This utility blocks JavaScript on websites to prevent ads, popups, and unnecessary scripts. Users can selectively block sites or apply blocking to all websites, with iCloud syncing across devices. It aims to improve privacy, battery life, and data usage.

Highlights
  • Blocks JavaScript on websites
  • Removes ads and popups
  • Reduces third-party script usage
  • Selective site blocking
  • Global site blocking option
  • iCloud sync across devices
Features
Read full description

A NoScript equivalent for Safari! This app blocks JavaScript on any website. It blocks most: • Ads • Newsletter popups • Cookie requests • Wasted megabytes of third-party JavaScript libraries When you encounter a website with too much JavaScript, just tap share → JavaSnipt → refresh, and voilà! No more interactivity. Alternatively, you can use JavaSnipt to block JavaScript on *all* websites and allow only sites you trust. It's up to you! Some sites, like YouTube, will not work with JavaScript blocked. That's why JavaSnipt targets only sites you select. By purchasing JavaSnipt for iOS, you will also unlock JavaSnipt for macOS. Your blocked sites sync between all your devices via iCloud. The web has too many popups and third-party scripts. It wasn't designed to respect your privacy, battery life, data cap or phone-sized screen. Take back control with JavaSnipt. (The crab is Snippy, our mascot. Think of this app as him snipping away the extra JavaScript!)

About

DataLeft

Features
Read full description

How much data is left? DataLeft answers on your Lock Screen — before you ever open the app. A calm gauge shows what's left of your plan and how many days it needs to last. If you're burning through data faster than the days, you'll see it in one glance — and get a heads-up before it's a problem. AT A GLANCE • Remaining data as a dual-ring gauge: data left vs days left • Widgets for Home Screen, Lock Screen, and StandBy • Alerts at 50 / 80 / 95% — helpful, never alarming BUILT FOR TRAVEL • Add your travel eSIM before you fly • Get a reminder to switch on arrival, and another before it expires • Fixed-period plans with D-day countdown PRIVATE BY DESIGN • No subscription. No server. No VPN. • Nothing leaves your device — there is nothing to collect • Works entirely offline DATALEFT PRO (one-time purchase) • Multiple plans — home plan and travel eSIMs side by side • Deep insights: 30-day trends, weekly rhythm, cellular vs WiFi • Daily budget alerts • Premium widgets Note: iOS provides device-wide network counters to apps. DataLeft shows accurate totals for your device; per-app breakdowns are not possible for any third-party app.

Screenshots

JavaSnipt4 screens
DataLeft4 screens

Verdict

The call

The clearest difference is price: DataLeft at Free against JavaSnipt's $2.99. DataLeft also leads on update cadence (every 2 weeks vs every 5 months) and iOS requirement (18.0 vs 26.0). JavaSnipt's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

DataLeft is free to download; JavaSnipt costs $2.99 up front. DataLeft sells 1 one-off in-app purchase. JavaSnipt asks for nothing beyond the download.

UpkeepUpdate frequency

JavaSnipt ships an update every 5 months, DataLeft every 2 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
JavaSnipt versus DataLeft: the parameters behind the verdict, then further details
ParameterJavaSniptDataLeft
Price$2.99Free — better
Rating4.1 (7 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS26.018.0 — better
Further details — not scored
Size15 MB1 MB
Age rating4+4+
DeveloperKyle NazarioOh Hyeon Kwon

In-app purchases

None

JavaSnipt

No in-app purchases

1 purchases

DataLeft

One-time1
  • DataLeft Pro$2.99

Questions

Is JavaSnipt free?
JavaSnipt costs $2.99, with no in-app purchases.
Is DataLeft free?
DataLeft is free to download, with in-app purchases available.
Do JavaSnipt or DataLeft have ads?
Neither JavaSnipt nor DataLeft shows ads.
Which is updated more often, JavaSnipt or DataLeft?
JavaSnipt ships an update every 5 months, and DataLeft every 2 weeks. Most recently, JavaSnipt was updated on November 7, 2026 and DataLeft on November 5, 2026.

Other comparisons