Comparison

Mobel bell ringing simulator vs DelayJaVu

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

Head to head
About

Mobel bell ringing simulator

Practice church bell ringing and handbell change ringing with this simulator. It allows users to practice any method, view blue line diagrams, and even create their own compositions. Available on iPhone, iPad, and Mac.

Highlights
  • Practice any method on 4-16 bells
  • Ring plain courses and custom touches
  • View blue line diagrams with zoom
  • Access 20,000 methods from library
  • Adjust ringing speed and gaps
  • Edit methods and calls
Features
Read full description

Mobel is a bell ringing simulator for church bell ringers and handbell change ringers. It runs on iPhone, iPad and Apple Mac. When ringers are at home, travelling or at towers, Mobel lets them practise any method they are going to ring. It also shows the blue line diagram for any method, including bobs and singles. Practise any method on 4 to 16 bells. Ring plain courses, or touches that Mobel creates (including spliced). Add your own touches (compositions). Ring any bell; handbell ringers can ring any pair. Mobel rings the other bells, and speaks any calls. Conduct: put in bobs and/or singles yourself. See the blue line diagram for any method or composition that you have added. Line styles with or without the underlying bell numbers, or as a grid. Lines for bobs and singles. Pinch to zoom the diagram. Select from 20,000 methods in the Central Council library. Change the speed of the ringing. Ring with or without a handstroke gap. Have Mobel wait if you hesitate - or continue in perfect rhythm. Edit methods and calls to create new methods or doubles variations. Basic instructions for using Mobel on iPhone and iPad: - Tap a bell to select it for ringing. - Tap Start to start the bells ringing rounds. - Then tap Go to ring the current composition and method. - Tap the bottom of the screen to ring the bell you selected. - For handbells, tap right and left to ring a pair. - Conducting: tap the top of the screen for a bob or single. - Tap Show to see the blue line for the current method. - Then double tap to change line style, or pinch to zoom. - Tap the info (i) button to view and change settings. - Tap the Help buttons for further information. From iOS 13.4 onward you can also ring using a keyboard on iPad/iPhone. Mobel comes from AbelSim, producer of the world's best-selling change ringing simulators: Abel for Windows PCs and Mabel for Apple Mac (see www.abelsim.co.uk). Mobel is not intended for handbell tune ringers: it rings changes, not tunes. The latest version runs on iOS 12 and later. Earlier versions of Mobel are still available for previous versions of iOS.

About

DelayJaVu

This audio effect plugin creates a unique stereo reverse delay sound. It captures your dry signal and plays it back in reverse, with independent control over left and right channel delay times, modulation, and stereo spread for creative sound design.

Highlights
  • Stereo reverse delay effect
  • Independent L/R delay times
  • Adjustable modulation
  • Variable stereo spread
  • AUv3 compatible
  • Standalone operation
Read full description

DelayJaVu - Stereo Reverse Delay (AUv3) DelayJaVu is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview Deja Vu - French for "already seen". The brief, intense and often startling sensation that a current, new experience has happened before. DelayJaVu is a stereo reverse delay with independent delay times for the left and right channels. DelayJaVu works by capturing your dry signal in a delay buffer, which is then read backwards over a time period corresponding to a delay time. As the virtual delay head repeatedly scans back through the delay buffer, you hear segments your original dry signal, repeated in reverse. I think reverse delay is a really cool effect - one of my favourites in fact! I especially like its slightly unpredictable nature, making it a great effect to interact with, as you play. I don't recall seeing any reverse delay plugins with independent times for the left and right channels so that may be something unique that DelayJaVu has to offer. And the addition of modulation and variable stereo spread adds further creative options, while keeping DelayJaVu compact, super easy to use and very DSP-friendly. Controls Mode - Off bypasses the effect and uses a "soft switching" aka "trails mode", to avoid pops and clicks. In L/R Lock mode, the delay time is set to be the same for the left and right channel, and the parameter sliders will be "locked" to the same value when changed. In L/R Free mode, you can set independent delay times for the left and right channel. Time L / R - Sets the delay time for the left and right channels independently, from 250ms to 2.5 seconds. Interesting effects can be achieved by setting the delay times to be close, but not exactly the same. Please note - Unlike a "normal" delay where you will hear the sound repeat after the delay time specified, DelayJaVu doesn't quite work like that. The delay heads for both channels are always in motion and repeat their cycles according to the delay time. This means that sometimes the delay head will be "closer" to the incoming audio. In this case you may hear the first repeat almost straight away, with subsequent repeats occurring at delay time intervals when the Feedback is > 0%. This is especially noticeable (and cool!) when running in Free mode with different delay times. This is also the way many reverse delays are implemented and why this particular design doesn't lend itself to tempo sync delay effects as the repeats will not "quantise" to note length boundaries. Feedback - Sets the feedback / regeneration for the delay on both channels. Mod - Adds a variable amount of modulation to both channels. As each channel is modulated differently, this can produce a nice stereo effect. Spread - At maximum, the left and right delay channels are hard-panned and have their own independent modulation applied. Decreasing the Spread parameter effectively narrows the stereo image of the delay and modulation all the way down to mono. Mix - The mix control goes from 100% dry to 100% wet. At the centre 50% position, the dry and wet signals are evenly balanced. At 100%, you only hear the wet / processed signal. For more info and support please visit: www.waverley-instruments.com/robjackson

Screenshots

Mobel bell ringing simulator4 screens
DelayJaVu3 screens

Verdict

The call

The clearest difference is price: DelayJaVu at $1.99 against Mobel bell ringing simulator's $5.99. DelayJaVu also leads on rating (5.0 vs 4.8). Mobel bell ringing simulator's advantage is ratings volume (22 vs 1). On update cadence, ads, in-app purchases and monetization model 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

Mobel bell ringing simulator costs $5.99 and DelayJaVu $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DelayJaVu holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Mobel bell ringing simulator has 22 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mobel bell ringing simulator ships an update every 6 weeks, DelayJaVu every 2 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Mobel bell ringing simulator versus DelayJaVu: the parameters behind the verdict, then further details
ParameterMobel bell ringing simulatorDelayJaVu
Price$5.99$1.99 — better
Rating4.8 (22 ratings)5.0 (1 ratings) — better
Positive reviews91.4% of reviews—
Number of ratings22 — better1
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.012.0
Further details — not scored
Size10 MB13 MB
Age rating4+4+
DeveloperAbelSimRob Jackson

Customer experience

Mobel bell ringing simulator

All ratings22 ratings
Positive95.5%
Neutral4.5%
Negative0.0%
Written reviews81 reviews
Positive91.4%
Neutral2.5%
Negative6.2%

DelayJaVu

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mobel bell ringing simulator

No in-app purchases

None

DelayJaVu

No in-app purchases

Questions

Is Mobel bell ringing simulator free?
Mobel bell ringing simulator costs $5.99, with no in-app purchases.
Is DelayJaVu free?
DelayJaVu costs $1.99, with no in-app purchases.
Which has better reviews, Mobel bell ringing simulator or DelayJaVu?
DelayJaVu is rated higher. Mobel bell ringing simulator averages 4.8 out of 5 from 22 ratings, while DelayJaVu averages 5.0 from 1 ratings.
Do Mobel bell ringing simulator or DelayJaVu have ads?
Neither Mobel bell ringing simulator nor DelayJaVu shows ads.
Which is updated more often, Mobel bell ringing simulator or DelayJaVu?
Mobel bell ringing simulator ships an update every 6 weeks, and DelayJaVu every 2 months. Most recently, Mobel bell ringing simulator was updated on October 14, 2026 and DelayJaVu on October 5, 2026.

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