World Time Difference vs Ruby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Compare global times
- Understand time zone differences
- Calculate future/past times
- Specify custom locations
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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.
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.
- Voice-to-text journaling
- Smart AI insights
- Completely private storage
- Daily reflection prompts
- Minimalist design
- Track personal growth
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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
Verdict
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
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.
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.
| Parameter | World Time Difference | Ruby |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.3 — better | 15.6 |
| Further details — not scored | ||
| Size | 22 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki KUROKI | Oliver Saylor |
Customer experience
World Time Difference
Ruby
In-app purchases
World Time Difference
No in-app purchases
Ruby
- Monthly Plan$4.991 Month
- Yearly$39.991 Year









