Comparison

DAF Delayed Auditory Feedback vs Hanoi Tower Touch

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

Head to head
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.

About

Hanoi Tower Touch

Experience the classic Tower of Hanoi puzzle with a touch-friendly interface. Move disks between rods following simple rules, challenging yourself across 26 difficulty levels. Features include gesture support, move alerts, undo, and game resuming.

Highlights
  • 26 progressive difficulty levels
  • Screen gesture support
  • Wrong move alert
  • Undo moves
  • Resume game
  • Game Center integration
Features
Read full description

The Tower of Hanoi (also known as the Tower of Brahma or Lucas' Tower) is a classic mathematical puzzle. The objective is to move the entire stack of disks from the leftmost peg to the rightmost peg, following these simple rules: - One at a time: Only one disk can be moved at a time. - Top disk only: You can only move the topmost disk from any peg. - Size matters: A larger disk can never be placed on top of a smaller disk. Challenge yourself and see how many levels you can conquer! Features: - 26 progressive difficulty levels - Screen Gesture supported. - Supports wrong move alert - Supports undo moves - Supports resuming game - Game Center supported Subscriptions: ------------------------------- * Premium Features: 3 Months ($2.99) * premium Features: 1 Year ($8.99) The subscriptions auto-renews at the end of the term, unless cancelled 24 hours in advance. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.Subscriptions may be managed by you and auto-renewal may be turned off by going to your Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchases a subscription to that publication, where applicable. Term of privacy: http://www.jijijaja.com/apps/privacyGame.htm Term of subscription: http://www.jijijaja.com/apps/appleSubscript.htm

Screenshots

DAF Delayed Auditory Feedback1 screens
Hanoi Tower Touch4 screens

Verdict

The call

The clearest difference is rating: Hanoi Tower Touch at 4.5 against DAF Delayed Auditory Feedback's 2.3. Hanoi Tower Touch also leads on review sentiment (47% vs 20%) and ratings volume (675 vs 6). DAF Delayed Auditory Feedback's advantage is in-app purchases (none vs 7) and iOS requirement (15.0 vs 17.0). On price, 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. Hanoi Tower Touch sells 7 in-app purchases, starting at $2.99 per 3 months. DAF Delayed Auditory Feedback asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hanoi Tower Touch holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: Hanoi Tower Touch has 675 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 20% of DAF Delayed Auditory Feedback's written reviews are positive against 47% of Hanoi Tower Touch's.

UpkeepUpdate frequency

DAF Delayed Auditory Feedback ships an update every 6 months, Hanoi Tower Touch every 6 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
DAF Delayed Auditory Feedback versus Hanoi Tower Touch: the parameters behind the verdict, then further details
ParameterDAF Delayed Auditory FeedbackHanoi Tower Touch
PriceFreeFree
Rating2.3 (6 ratings)4.5 (675 ratings) — better
Positive reviews20.0% of reviews46.9% of reviews — better
Number of ratings6675 — better
Update frequencyEvery 6 monthsEvery 6 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size5 MB7 MB
Age rating12+4+
DeveloperJunichiro Seyama景灯 梁

Customer experience

DAF Delayed Auditory Feedback

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

Hanoi Tower Touch

All ratings675 ratings
Positive87.7%
Neutral4.3%
Negative8.0%
Written reviews98 reviews
Positive46.9%
Neutral17.3%
Negative35.7%

Bugs and requests

DAF Delayed Auditory Feedback

Not enough reviews yet to summarise bugs or requests.

Hanoi Tower Touch

Reported bugs

4 issues
  • Tutorial resets player's progress
  • Leaderboard contains impossible scores
  • Discs slightly vibrate, disrupting concentration
  • Exiting to home screen causes level restart

Requested features

5 requests
  • Add dark mode option
  • Allow tapping to move discs instead of dragging
  • Add ability to save progress and resume later
  • Include a timer and track time spent on each run
  • Optimize animations for faster gameplay

In-app purchases

None

DAF Delayed Auditory Feedback

No in-app purchases

7 purchases

Hanoi Tower Touch

Subscriptions4
  • Premium Features: 3 Months3 Days trial$2.993 Months
  • Eliminación de anuncios3 Days trial$2.993 Months
  • Premium Features: 1 Year3 Days trial$7.991 Year
Show 1 more
  • Eliminación de anuncios3 Days trial$7.991 Year
One-time3
  • Ads removal$2.99
  • 20 Hanoi coins$2.99
  • 50 Hanoi coins$5.99

Questions

Is DAF Delayed Auditory Feedback free?
DAF Delayed Auditory Feedback is free to download, with no in-app purchases.
Is Hanoi Tower Touch free?
Hanoi Tower Touch is free to download, with in-app purchases available.
Which has better reviews, DAF Delayed Auditory Feedback or Hanoi Tower Touch?
Hanoi Tower Touch is rated higher. DAF Delayed Auditory Feedback averages 2.3 out of 5 from 6 ratings, while Hanoi Tower Touch averages 4.5 from 675 ratings.
Do DAF Delayed Auditory Feedback or Hanoi Tower Touch have ads?
Both DAF Delayed Auditory Feedback and Hanoi Tower Touch show ads.
Which is updated more often, DAF Delayed Auditory Feedback or Hanoi Tower Touch?
DAF Delayed Auditory Feedback ships an update every 6 months, and Hanoi Tower Touch every 6 weeks. Most recently, DAF Delayed Auditory Feedback was updated on October 7, 2026 and Hanoi Tower Touch on October 13, 2026.

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