Q vs I
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Q
This professional numerology calculator helps you discover hidden meanings in names, dates, and numbers. It offers various decoding methods and number systems to reveal personal synchronicity.
- Straight decoding method
- Stacked decoding method
- Vowel and Consonant Filtering
- Number Filtering
- Multiple Number Systems (Pythagorean, Chaldean, etc.)
- Letter 'Y' preferences
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Discover Your Synchronicity! What started as a massive spreadsheet for Hollywood astrologer Russell Olsen, then a compiled basic program (CBASIC) running on CP/M, and a Borland Turbo BASIC version for MS-DOS, Q-Decode, is now available for all iOS devices and on Mac PCs. Q-Decode by GridQ is a professional numerology decoding/calculator program that is easy to use. It enables you to enter names, dates, letters, or numbers in any combination. Q-Decode will then break down the data and present its numerological basic digit. Q-Decode features: - Straight decoding method - Stacked decoding method (for dates) - Vowel Filtering - Consonant Filtering - Number Filtering - Modern, Pythagorean, Chaldean, and Crowly Number Systems - Letter 'Y' preferences Synchronicity and Q-Decode In the 1950s, Carl G. Jung coined the word synchronicity, which the Oxford American dictionary defines as, "the simultaneous occurrence of events that appear significantly related but have no discernible causal connection." The numerology of names, dates, places, telephone numbers, house addresses, etc., are one way in which the synchronicity of your life can be revealed. Example: One of our programmers discovered that his full name is a '7' and his birth date is also a '7'. This number has also popped up in many other aspects of his life including even the serial number of his Mac laptop! Why? Well, the 'why' is subject to much interpretation. Q-Decode is a tool for revealing these fascinating 'hidden' little mysteries. The meaning is left for you to discover...
I
This app provides a digital I Ching (Yi Jing) experience for divination and self-reflection. It offers intuitive design, a journal for saving readings, and multiple casting methods, including virtual coins and a manual builder.
- Digital I Ching/Yi Jing oracle
- Intuitive modern interface
- Journal for saving readings
- Multiple casting methods (coins, stalks, manual)
- Original Chinese text and Legge Translation
- Lookup library organized by number and trigram
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Simply the best. Whether you're new to the I Ching or have used the book as an oracle, an aid to creativity, or a mirror of your subconscious, you'll love the clarity of writing, the intuition in the design, and the simplicity of use of this digital I Ching or Yi Jing. The modern, no-nonsense interface delivers new users straight to the basics: you ask a question, the I-Ching answers. For old souls who know the book well this app holds a wealth of features for deeper research. There's a journal where you can save and search your questions and readings, a notes area where you can record any length of text as context, a lookup library organized by number and trigram. You can recreate any I Ching reading using decimal notation. Cast a line at a time, an entire hexagram with a button press, or shake the phone gently to cast virtual coins. Original Chinese text and the Legge Translation included in an alternative selectable library. The I Ching software engine emulates precisely the ancient yarrow stalk method, which was slightly more likely to cast yang than yin. A changing yin line is very rare using stalks, but of equal probability to changing yang using coins. The ancient divination method uses stalks rather than coins. If you prefer to count your own stalks or cast your own coins there's a manual hexagram builder to look up and record your results. The wisdom and philosophy of the ancient Chinese texts blend seamlessly with commentaries that gently mix a dash of modern poetry, a pinch of humor, and cultural grace notes from the worlds of art, music, divination, literature and Human Design to bring you what many daily users have called the very best I-Ching app available. --------- Among my favourite reviews: "Of all the versions I've used, your renderings of the Book of Changes are my heart-felt favorites. They have inspired me, made me laugh and cry and everything in between." “Pretty profound! This Iching app gave me spot-on advice. I've never paid for an app before, but I had a strong urge to get this one. I'm impressed! Not to sound all new-age but I totally laughed out loud at the reading it gave me, it was like it was sitting here looking over my shoulder and telling me exactly what I needed to know about my grumpy husband. P.S. Grumpy husband called and apologized..." "Carl Jung would have been happy to have this Yi Jing on his phone - great to use, unfussy, untechy, respectful of the original. The journal feature is great for storing readings and referring back. Well done!" --------- All of us sometimes need a sympathetic ear and wise guidance, whether it's in matters of romance or finance: the I-Ching can become a companion along life’s journey like no other. It's a book that helps you explore questions and, if you're lucky, find answers: Whether you believe it's because the book is an oracle or the answers are simply unearthed from your subconscious -- the book's true magic lies in its ability to be a helpful guide (sometimes astoundingly so) to all these different forms of curiosity. Following the tradition of Baynes and countless interpreters of the original texts, I've written commentaries which borrow words and inspiration from a multitude of sources: Bob Dylan, Lao Tzu, Doctor Who, the Tarot, T.S. Eliot, Emily Dickinson, John Lennon, Maya Angelou, the Grateful Dead and Martin Luther King all make appearances. The language, unlike so many translations, makes every attempt to be gender-neutral when it's not gender-specific. I wanted the sparest interface possible. No fake parchment backgrounds, no gimmicky images of bamboo or cartoon sages with oracles and winning lottery numbers. I strived to create a quiet, reflective, slowed down experience in an environment that normally shouts. I hope you enjoy using this I-Ching app as much as I enjoy crafting it, improving it, and hearing from people who have found it helpful in their lives.
Screenshots
Verdict
The clearest difference is price: I at $3.99 against Q's $12.99. I also leads on ratings volume (101 vs 3). Q's advantage is chart position (#156 vs unranked). On rating, review sentiment, update cadence and 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
Q costs $12.99 and I $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Q holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: I has 101 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Q's written reviews are positive against 98% of I's.
Q ships an update every 7 months, I every 4 months. Both last shipped on October 24, 2026.
| Parameter | Q | I |
|---|---|---|
| Price | $12.99 | $3.99 — better |
| Rating | 5.0 (3 ratings) — better | 4.8 (101 ratings) |
| Positive reviews | 100.0% of reviews — better | 97.9% of reviews |
| Number of ratings | 3 | 101 — better |
| Update frequency | Every 7 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #156 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Stace | Brian Fitzgerald |
Customer experience
Q
I
Bugs and requests
Q
Not enough reviews yet to summarise bugs or requests.
I
Reported bugs
1 issue- Tapping the Yin Yang button selects and highlights it, causing it to stop registering taps.
Requested features
5 requests- Way to clear the 'Ask' box
- Ability to tap on hexagrams to toggle between them in readings with changing lines
- Swipe left and right through pages of a reading
- Add own notes to journal entries
- History tab
In-app purchases
Q
No in-app purchases
I
No in-app purchases









