Comparison

iYinYang vs DAF Delayed Auditory Feedback

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

Head to head
About

iYinYang

Explore Chinese astrology with beautiful graphics and intuitive design. Get personalized readings for yourself and friends, including zodiac animal, element, and ascendant signs. Discover hidden characteristics and learn about the fascinating world of Chinese horoscopes.

Highlights
  • Unlimited profiles for readings
  • Chinese Zodiac animal sign
  • Chinese element sign
  • Chinese Ascendant sign
  • Element animal reading
  • Chinese name and pronunciation
  • Browse past and future dates
Features
Read full description

Discover your Chinese Zodiac—and go deeper than a simple sign lookup. iYinYang turns Chinese astrology into a personal reading for you, your friends, and your family. Create unlimited profiles, explore four layered readings for each person, and browse a full 60-year calendar of Animal and Element combinations. WHY iYINYANG • One-time purchase — no subscription, no ads • Unlimited profiles for family and friends (Family Sharing supported) • Private by design — we do not collect your data • Beautiful in Light and Dark Mode FOUR READINGS FOR EVERY PROFILE • Chinese Zodiac animal — your core instincts and temperament • Chinese Element — the energy behind how you feel and respond • Chinese Ascendant — how you move through the world • Element Animal — your rare 60-year combination EXPLORE & COMPARE • See each profile’s animal, element, ascendant, and elemental animal at a glance • Cultural details: Chinese name, pronunciation, Yin/Yang, favorable planet, color, taste, and direction • 60-year calendar — explore any past or future date and its governing sign and element PERFECT FOR • Beginners who want a clear, visual introduction to Chinese astrology • Anyone curious about their sign beyond Chinese New Year • Families and couples comparing readings together • Gift-givers who want something meaningful and personal Chinese astrology isn’t just a party trick—it’s a layered map of personality and pattern. iYinYang makes that map elegant, approachable, and yours to keep. Download iYinYang — one price, unlimited profiles, no subscription.

About

DAF Delayed Auditory Feedback

This app uses delayed auditory feedback to make speaking difficult by playing your voice back through headphones with a slight delay. It's a tool for psychological experiments, allowing users to test the effects of DAF on their own speech.

Highlights
  • Delayed auditory feedback simulation
  • Voice input via microphone
  • Audio output through headphones
  • Psychological experiment tool
  • Adjustable delay effects
  • Speech disruption testing
Features
Read full description

Try saying "toy boat" repeatedly. It's hard to say, right? There are many words like this, and if you have to use them during an important presentation, it can be quite stressful. But with this app, "toy boat" becomes... **Hugely** difficult to say. If you thought, "Wait, shouldn't it make it easier to say?" you're wrong. It really becomes **hugely** difficult to say. This is a "who benefits from this?" kind of app. What this app does is simple. It picks up your voice through the microphone and plays it back through the headphones (or earphones) with a slight delay. That's all it does. This simple process is called Delayed Auditory Feedback, or DAF for short. DAF is known to have interesting effects. It makes it difficult to speak. So, the already difficult "toy boat" becomes **hugely** difficult to say with DAF. This might seem like a "who benefits from this?" kind of thing, but it's a very interesting phenomenon from a cognitive psychology perspective. Also, DAF doesn't always make speech difficult; the extent of the disruption varies depending on the amount of delay and the way you speak. This app is a simple psychological experiment tool that allows you to test when DAF's effects are most pronounced using yourself as the subject. Experiment with different scenarios using "toy boat" as the keyword. **Important** When using this app, you must have headphones (or earphones) with a microphone. You cannot substitute the device's built-in microphone and speakers. I'll say it again. You cannot substitute the device's built-in microphone and speakers. **Warning** DAF creates a speech situation different from normal. It is possible that this may cause some stress to your mind and body. We cannot take any responsibility for any issues that arise from using this app. Please understand the principles of DAF fully and use this app at your own risk. If you feel any abnormalities in your mind or body, stop using the app immediately. Additionally, we do not recommend letting minors, especially young children, experience DAF. **Effect on Stuttering** There are reports that DAF has improved stuttering. However, this app was developed purely as a simple psychological experiment tool to examine how DAF affects the speech of non-stutterers from a cognitive psychology perspective.

Screenshots

iYinYang4 screens
DAF Delayed Auditory Feedback1 screens

Verdict

The call

The clearest difference is review sentiment: iYinYang at 67% against DAF Delayed Auditory Feedback's 20%. iYinYang also leads on rating (4.3 vs 2.3) and ads (none vs shown). DAF Delayed Auditory Feedback's advantage is price (Free vs $3.99). On update cadence, 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

DAF Delayed Auditory Feedback is free to download; iYinYang costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iYinYang holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: iYinYang has 40 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 67% of iYinYang's written reviews are positive against 20% of DAF Delayed Auditory Feedback's.

UpkeepUpdate frequency

iYinYang ships an update every 5 months, DAF Delayed Auditory Feedback every 6 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
iYinYang versus DAF Delayed Auditory Feedback: the parameters behind the verdict, then further details
ParameteriYinYangDAF Delayed Auditory Feedback
Price$3.99Free — better
Rating4.3 (40 ratings) — better2.3 (6 ratings)
Positive reviews66.7% of reviews — better20.0% of reviews
Number of ratings40 — better6
Update frequencyEvery 5 months — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size11 MB5 MB
Age rating4+12+
DeveloperGary SagguJunichiro Seyama

Customer experience

iYinYang

All ratings40 ratings
Positive85.0%
Neutral0.0%
Negative15.0%
Written reviews15 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

DAF Delayed Auditory Feedback

All ratings6 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews10 reviews
Positive20.0%
Neutral10.0%
Negative70.0%

In-app purchases

None

iYinYang

No in-app purchases

None

DAF Delayed Auditory Feedback

No in-app purchases

Questions

Is iYinYang free?
iYinYang costs $3.99, with no in-app purchases.
Is DAF Delayed Auditory Feedback free?
DAF Delayed Auditory Feedback is free to download, with no in-app purchases.
Which has better reviews, iYinYang or DAF Delayed Auditory Feedback?
iYinYang is rated higher. iYinYang averages 4.3 out of 5 from 40 ratings, while DAF Delayed Auditory Feedback averages 2.3 from 6 ratings.
Do iYinYang or DAF Delayed Auditory Feedback have ads?
DAF Delayed Auditory Feedback shows ads; iYinYang does not.
Which is updated more often, iYinYang or DAF Delayed Auditory Feedback?
iYinYang ships an update every 5 months, and DAF Delayed Auditory Feedback every 6 months. Most recently, iYinYang was updated on October 12, 2026 and DAF Delayed Auditory Feedback on October 7, 2026.

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