Comparison

Opera vs Bubbu

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

Head to head
About

Opera

Access librettos for Carl Orff's "Carmina Burana" and other opera masterpieces. Read along with music playback, view original, English, or bilingual versions, and enjoy a plot summary and character list.

Highlights
  • Opera librettos
  • Original, English, and bilingual versions
  • Plot summary
  • Character list
  • Read along with music
  • Legible text on dark background
  • Smooth scrolling
Features
Read full description

Opera: librettos of opera masterpieces on your iPhone / iPod Touch. In this application you will find: CARMINA BURANA by Carl Orff (based on 24 of the poems found in the medieval collection Carmina Burana) The application includes the opera libretto (in an original language, English or bilingual version), some information about how the opera came to be, a plot summary and the list of characters. In addition, because your iPhone/iPod Touch allows you to upload an application and play music at the same time, you’ll be able to read the libretto as you listen. Audio of the operas is not included. Languages: Italian/English Libretto: Latin/English FEATURES: - Legibility : the light text on a dark background is easy on the eyes and makes it possible to read in dark places (such as the theatre). - Usability: the libretto is available in the original language, in English or in a bilingual version allowing text comparison. - Scrolling: we have developed an extremely smooth, fluid scrolling algorithm that makes content even easier to access. Scroll speed can be personalized and adapted in real time to match the progress of the opera. All the “Opera” applications on iTunes: Opera ...........................................................containing all 24 librettos Aida ..............................................................by G.Verdi Carmen ........................................................ by G.Bizet Carmina Burana ............................................ by C.Orff Cavalleria Rusticana ..................................... by P.Mascagni Così fan tutte ............................................... by W.A.Mozart Don Giovanni ................................................ by W.A.Mozart Il Trovatore ................................................... by G.Verdi I Pagliacci ..................................................... by R.Leoncavallo La Bohème .................................................... by G.Puccini La Forza del Destino ..................................... by G.Verdi La Traviata .................................................... by G.Verdi L’Italiana in Algeri ……………………….…..…… by G.Rossini Lucia di Lammermoor ................................... by G.Donizetti Macbeth ........................................................ by G.Verdi Madama Butterfly .......................................... by G.Puccini Nabucco ........................................................ by G.Verdi Norma ........................................................... by V.Bellini Otello ............................................................ by G.Verdi Requiem ........................................................ by W.A.Mozart Rigoletto ........................................................ by G.Verdi The Barber of Seville (Il Barbiere di Siviglia)..... by G.Rossini The Marriage of Figaro (Le Nozze di Figaro).... by W.A.Mozart Tosca ............................................................. by G.Puccini Turandot ........................................................ by G.Puccini

About

Bubbu

An educational app offering curated audiobooks and picture storybooks for children under 12. It features age-filtered content, including Azerbaijani folk stories and English learning books, with professional voiceovers and illustrations to foster early reading habits.

Highlights
  • Age-filtered audiobooks and picture storybooks
  • Azerbaijani folk stories
  • English learning books
  • Highlighted new words with descriptions
  • Professional voiceovers and illustrations
  • Weekly new book additions
Features
Read full description

Bubbu is an educational children’s app that offers curated, age-filtered audiobook & picture storybooks and Azerbaijani folk stories for kids and children under 12 years old. Bubbu aims to help kids to gain the habit of reading at an early age. Our books and stories are carefully curated by child psychologists and filtered by age. Bubbu’s library include: • Carefully prepared stories and drawings suitable for preschool children’s ages. Highlighted new words accompanied by their description • Support for learning English with English books • Voiceover and illustrations by professional artists. • A growing library with weekly new books and updates

Screenshots

Opera4 screens
Bubbu4 screens

Verdict

The call

The clearest difference is review sentiment: Bubbu at 100% against Opera's 50%. Bubbu also leads on rating (5.0 vs 3.1). Opera's advantage is ratings volume (50 vs 4) and update cadence (every 5 weeks vs every 3 months). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Bubbu holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Opera has 50 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Opera's written reviews are positive against 100% of Bubbu's.

UpkeepUpdate frequency

Opera ships an update every 5 weeks, Bubbu every 3 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Opera versus Bubbu: the parameters behind the verdict, then further details
ParameterOperaBubbu
PriceFreeFree
Rating3.1 (50 ratings)5.0 (4 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings50 — better4
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS6.0 — better12.0
Further details — not scored
Size1 MB37 MB
Age rating4+4+
DeveloperAppCube LtdBizim Consulting AB

Customer experience

Opera

All ratings50 ratings
Positive48.0%
Neutral12.0%
Negative40.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bubbu

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Opera

No in-app purchases

None

Bubbu

No in-app purchases

Questions

Is Opera free?
Opera is free to download, with no in-app purchases.
Is Bubbu free?
Bubbu is free to download, with no in-app purchases.
Which has better reviews, Opera or Bubbu?
Bubbu is rated higher. Opera averages 3.1 out of 5 from 50 ratings, while Bubbu averages 5.0 from 4 ratings.
Do Opera or Bubbu have ads?
Neither Opera nor Bubbu shows ads.
Which is updated more often, Opera or Bubbu?
Opera ships an update every 5 weeks, and Bubbu every 3 months. Most recently, Opera was updated on October 31, 2026 and Bubbu on November 3, 2026.

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