Comparison

justConvert vs Zarrah

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

Head to head
About

justConvert

Features
Read full description

All your conversions in one place! Easily convert: Currency: Always up-to-date rates. (using a live connection to Frankfurter stock exchange) Length: Quick and precise measurements. Weight: Instant weight conversions. (american cups and most common units) Area: Easy area calculations. (even tatami in pro subscription) Volume: Accurate volume conversions. Features: -User-friendly. -No ads or hidden fees. -Offline availability. -All your conversions in one place. -Conversion History: Easily access to past conversions. Upgrade your conversion game now! Download the ultimate All-in-One Converter and simplify your daily tasks with conversion history at your fingertips. *Contains in app subscriptions: By clicking 'Subscribe & Pay' you agree to the terms of use, privacy policy and subscribe to a monthly/yearly subscription. Price of subscription will be charged to your credit card through your Apple account at confirmation of purchase. subscription automatically renews unless auto-renew is turned off at least 24 hours before the current period. account will be charged for renewal within 24-hours prior to the end of the current period and identify the cost of the renewal. You can cancel anytime with your iTunes account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription. Manage your subscription in account Settings after purchase.

About

Zarrah

This app helps Muslims build and maintain positive habits to grow closer to Allah. It offers features like habit setting, reminders, accountability partners, penalties for missed goals, and progress tracking to foster consistency in religious practices and self-improvement.

Highlights
  • Habit setting and tracking
  • Customizable reminders
  • Accountability partner feature
  • Disciplinary penalties
  • Progress visualization
  • Support for various Islamic habits
Features
Read full description

Zarrah helps you plan around prayer times, Hijri dates, fasting, Qibla direction, worship habits, focus time, and travel prayer windows. Keep salah, tasks, calendar planning, fasting notes, and habit tracking together without jumping between separate apps. PRAYER TIMES AND DAILY PLANNING Zarrah calculates Fajr, Dhuhr, Asr, Maghrib, Isha, sunrise, midnight, and the last third of the night for your location. Build tasks around fixed times or relative to prayer, such as before Maghrib or after Fajr. Use prayer windows to shape work, study, family plans, and personal routines. HIJRI CALENDAR AND FASTING See Hijri and Gregorian dates together. Zarrah supports Islamic day boundaries that begin at Maghrib, regional Hijri offsets, Ramadan, Ayyam al-Beed, Mondays, Thursdays, Arafah, Ashura, and other meaningful fasting days. Prepare suhoor and iftar reminders, save fasting notes, and keep voluntary fasts visible. HABITS, QIBLA, FOCUS, AND TRAVEL Track worship habits and personal routines with streaks that respect the Islamic day boundary. Find Qibla direction when you need it. Protect salah, study, bedtime, or deep work with focus blocking on supported devices. Keep prayer windows visible when travel plans or flight times change your day. OFFLINE AND SYNC Core prayer time and calendar calculations work offline. Sign in to sync tasks, habits, settings, and profile data across devices. BUILT FOR MUSLIM DAYS Use Zarrah when prayer, family, study, work, fasting, and travel all compete for attention. The app keeps Islamic time at the center of planning while staying calm enough to check every day. Privacy Policy: https://zarrah.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

justConvert3 screens
Zarrah4 screens

Verdict

The call

The clearest difference is iOS requirement: justConvert at 13.0 against Zarrah's 16.4. On price, ads, in-app purchases and device support 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

Both are free to download. justConvert sells 1 one-off in-app purchase and Zarrah sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
justConvert versus Zarrah: the parameters behind the verdict, then further details
ParameterjustConvertZarrah
PriceFreeFree
Rating4.6 (13 ratings) — better
Positive reviews75.0% of reviews
Number of ratings13 — better
Update frequencyEvery 6 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size17 MB161 MB
Age rating4+4+
DeveloperGero WaltherZarrat LLC

In-app purchases

1 purchases

justConvert

One-time1
  • Pro Units$8.99
5 purchases

Zarrah

Subscriptions4
  • Monthly Subscription$3.991 Month
  • Monthly 4.99$4.991 Month
  • Annual Subscription$39.991 Year
Show 1 more
  • Annual 49.99$49.991 Year
One-time1
  • Lifetime Access$149.99

Questions

Is justConvert free?
justConvert is free to download, with in-app purchases available.
Is Zarrah free?
Zarrah is free to download, with in-app purchases available.
Do justConvert or Zarrah have ads?
Neither justConvert nor Zarrah shows ads.

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