Comparison

World Time Difference vs Ruby

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

Head to head
About

World Time Difference

Easily compare current times across different global locations. This app helps you understand time zone differences and plan accordingly, going beyond basic clock functions.

Highlights
  • Compare global times
  • Understand time zone differences
  • Calculate future/past times
  • Specify custom locations
Features
Read full description

Because the Earth is a sphere, cities around the world uses different clocks. When London is at 9 a.m., New York is at 4 am and Tokyo is at 6pm. It's called timezone. With the "World Clock" in iOS preinstalled application "Clock", you can know the current time of any place in the world. But if you want to know the time of another place at 9 p.m. in this place, the calculation is not easy. When is noon at a place, what time is it in another place? With this application you can easily compare the times in places you specified around the world with each other.

About

Ruby

Effortlessly capture your thoughts and feelings using your voice. This AI-powered journal transforms spoken words into organized written entries, offering insights and prompts for self-reflection. Enjoy a private, ad-free space to improve your mood, focus, and mental well-being.

Highlights
  • Voice-to-text journaling
  • Smart AI insights
  • Completely private storage
  • Daily reflection prompts
  • Minimalist design
  • Track personal growth
Features
Read full description

Journaling without all the typing. Ruby is a voice journal that lets you capture your thoughts simply by talking. Press record, speak naturally, and Ruby turns what you say into a clear written journal entry you can come back to later. Then Ruby goes one step further by asking relevant follow up questions based on what you actually said, helping you reflect more deeply on the things that matter to you. ---- JOURNAL BY VOICE Forget staring at a blank page or typing out everything on your mind. Open Ruby, press record, and talk. Reflect on your day, work through something on your mind, capture an idea, think through a decision, or simply get your thoughts out of your head. Ruby transforms your recording into an organized written journal entry automatically. ---- MORE THAN VOICE TO TEXT Ruby does more than transcribe your recording. After each entry, Ruby can ask thoughtful follow up questions based on what you actually talked about. Instead of giving you generic journal prompts, Ruby responds to your own thoughts and gives you new questions to reflect on. ---- HOW IT WORKS 1. Press record 2. Say what is on your mind 3. Ruby turns your voice into a clear written journal entry 4. Get relevant follow up questions 5. Revisit your entries whenever you want ---- BUILT FOR REAL LIFE Ruby makes it easier to journal when writing feels like too much effort. Journal while sitting on the couch, taking a walk, having a break, winding down at night, or whenever something is on your mind. You do not need to write perfectly. You do not even need to know exactly what you want to say before you start. Just talk. ---- KEY FEATURES VOICE JOURNALING: Record your thoughts naturally instead of typing everything out. AI JOURNAL ENTRIES: Ruby transforms your spoken thoughts into clear, organized written entries. SMART FOLLOW UP QUESTIONS: Get questions based on what you actually said so you can continue reflecting. JOURNAL HISTORY: Revisit previous entries and look back on your thoughts, experiences, and ideas over time. JOURNALING PROGRESS: Track your entries, streaks, words, and time spent journaling. DAILY REFLECTION: Use Ruby whenever you want to reflect on your day, think something through, or simply talk. ---- WHY RUBY • Journal without spending time typing • Capture thoughts while they are still fresh • Speak naturally instead of worrying about how to write • Turn long, unstructured thoughts into readable journal entries • Get follow up questions connected to your own thoughts • Revisit your entries whenever you want • Build a journaling habit that fits more easily into everyday life No blank page. No pressure to write perfectly. Just press record and start talking. ---- A DIFFERENT WAY TO JOURNAL Speaking is often easier than writing. If you want to journal more consistently but traditional diary apps feel like work, Ruby gives you another way to do it. Speak freely. Ruby handles the writing. ---- Terms of Use: https://inkworldtos.carrd.co Privacy Policy: https://inkworldprivacy.carrd.co

Screenshots

World Time Difference4 screens
Ruby4 screens

Verdict

The call

The clearest difference is rating: Ruby at 5.0 against World Time Difference's 1.0. World Time Difference's advantage is in-app purchases (none vs 2) and iOS requirement (9.3 vs 15.6). On price, ratings volume, ads 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. Ruby sells 2 in-app purchases, starting at $4.99 per month. World Time Difference asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ruby holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard4 real differences · 6 level
World Time Difference versus Ruby: the parameters behind the verdict, then further details
ParameterWorld Time DifferenceRuby
PriceFreeFree
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings11
Update frequency—Monthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.3 — better15.6
Further details — not scored
Size22 MB42 MB
Age rating4+4+
DeveloperMasayuki KUROKIOliver Saylor

Customer experience

World Time Difference

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Ruby

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

World Time Difference

No in-app purchases

2 purchases

Ruby

Subscriptions2
  • Monthly Plan$4.991 Month
  • Yearly$39.991 Year

Questions

Is World Time Difference free?
World Time Difference is free to download, with no in-app purchases.
Is Ruby free?
Ruby is free to download, with in-app purchases available.
Which has better reviews, World Time Difference or Ruby?
Ruby is rated higher. World Time Difference averages 1.0 out of 5 from 1 ratings, while Ruby averages 5.0 from 1 ratings.
Do World Time Difference or Ruby have ads?
Neither World Time Difference nor Ruby shows ads.

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