# Q vs I

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 (#199 vs unranked). On rating, review sentiment, update cadence and ads there is nothing between them.

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 26, 2026.

## The numbers

| Metric | Q | I |
| --- | --- | --- |
| Price | $12.99 | **$3.99** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/q-decode/id603408466/reviews)** | [4.8 (101 ratings)](https://appshunter.io/ios/app/i-ching-app-of-changes/id959384356/reviews) |
| Number of ratings | 3 | **101** |
| Positive reviews | **100.0% of reviews** | 97.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#199** | — |
| Size | 2 MB | 86 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Stace](https://appshunter.io/developer/603408809) | [Brian Fitzgerald](https://appshunter.io/developer/959384355) |

## What reviewers say

### Q

[App page](https://appshunter.io/ios/app/q-decode/id603408466)

**Currently charting:** #199 Top Paid · Lifestyle (US App Store)

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.

**Highlights:** Straight decoding method, Stacked decoding method, Vowel and Consonant Filtering, Number Filtering, Multiple Number Systems (Pythagorean, Chaldean, etc.), Letter 'Y' preferences

**Features:** macOS Compatibility

**In-app purchases:** none


### I

[App page](https://appshunter.io/ios/app/i-ching-app-of-changes/id959384356)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and straightforward
- ✨ Simple and elegant design
- 📖 Journal/record-keeping feature
- 🔮 Accurate and insightful readings
- 💡 Yarrow stalk method implementation

**What reviewers complain about**

- 🐛 Tapping Yin Yang button can stop registering
- 🤔 Readings can be obscure/difficult to understand
- 🚫 No commentaries on the lines (older review)
- 🤔 Interpretation sometimes lacking (older review)

**Reported bugs**

- Tapping the Yin Yang button selects and highlights it, causing it to stop registering taps.

**Requested features**

- 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


## Frequently asked questions

### Is Q free?

Q costs $12.99, with no in-app purchases.

### Is I free?

I costs $3.99, with no in-app purchases.

### Which has better reviews, Q or I?

Q is rated higher. Q averages 5.0 out of 5 from 3 ratings, while I averages 4.8 from 101 ratings.

### Do Q or I have ads?

Neither Q nor I shows ads.

### Which is updated more often, Q or I?

Q ships an update every 7 months, and I every 4 months. Most recently, Q was updated on October 26, 2026 and I on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*