Comparison

libretto42 vs CollectionKeeper

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

Head to head
About

libretto42

Features
Read full description

Does the theatre, opera or musical performance you attend offer subtitles via the libretto42 app? Just scan the QR code the venue provides and read along to the performance in real time. You can get additional information about the play, and switch between the provided translations. Use your headphones, if you wish to listen to the subtitles with the text-to-speech option. A stable internet connection is required. The app itself is available in English and German. The availability and number of the subtitle languages depends on the performance organisers.

About

CollectionKeeper

Organize, track, and analyze your pipe and tobacco collections with powerful tools. Document individual items, explore insights, and generate detailed reports. Features AI-powered identification and pairing, plus community connection options while maintaining data privacy.

Highlights
  • Track pipe and tobacco details
  • Organize blends by type and status
  • Generate PDF and Excel reports
  • AI-powered pipe identification
  • Intelligent pairing insights
  • Log smoking sessions and rotations
  • Connect with other collectors
Features
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CollectionKeeper is a premium collection intelligence platform built for enthusiasts who want more than a simple inventory app. Instead of offering shallow tools across dozens of categories, CollectionKeeper goes deep where it matters most: Pipes, Tobacco, Whiskey, Cigars, and Wine. Every module is designed with collector-specific details such as aging windows, blend components, bowl geometry, tasting notes, session logs, valuations, and more. Most apps only help you catalog what you own. CollectionKeeper helps you enjoy it. Our built-in AI Curator delivers personalized recommendations based on your actual collection and usage history, including what to smoke or sip next, forgotten favorites to revisit, rotation optimization, taste-pattern learning, and cross-category pairings like pipe & tobacco or cigar & whiskey. CollectionKeeper is also built around the experience, not just the item. Log sessions, tastings, mood, context, ratings, and consumption history to create a living record of your hobby. The more you use it, the smarter the recommendations become. Unlike apps that separate collections into disconnected products or generic categories, CollectionKeeper connects everything through a unified ecosystem with one profile, one intelligent engine, shared inventory logic, and cross-module insights. Whether you’re managing a cellar, building a whiskey shelf, tracking your pipe rotation, or planning the perfect pairing, CollectionKeeper turns your collection into something smarter, more personal, and more rewarding. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.pipekeeperapp.com/privacy-statement

Screenshots

libretto424 screens
CollectionKeeper4 screens

Verdict

The call

The clearest difference is in-app purchases: libretto42 at none against CollectionKeeper's 8. libretto42 also leads on iOS requirement (15.0 vs 26.2). CollectionKeeper's advantage is update cadence (every 6 days vs every 3 weeks). 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. CollectionKeeper sells 8 in-app purchases, starting at $2.99 per month. libretto42 asks for nothing beyond the download.

UpkeepUpdate frequency

libretto42 ships an update every 3 weeks, CollectionKeeper every 6 days. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
libretto42 versus CollectionKeeper: the parameters behind the verdict, then further details
Parameterlibretto42CollectionKeeper
PriceFreeFree
Rating—3.6 (12 ratings) — better
Positive reviews—57.1% of reviews
Number of ratings—12 — better
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size23 MB5 MB
Age rating4+17+
DeveloperLemon42 IT, Web und Software GmbHWarren McCrea

In-app purchases

None

libretto42

No in-app purchases

8 purchases

CollectionKeeper

Subscriptions8
  • CollectionKeeper Module Monthly$2.991 Month
  • 1 Month Founders Subscription$4.991 Month
  • CollectionKeeper 3 Modules Monthly$7.991 Month
Show 5 more
  • CollectionKeeper All Modules Month$8.991 Month
  • CollectionKeeper Module Annual$29.991 Year
  • Founders Annual Bundle$49.991 Year
  • CollectionKeeper 3 Modules Annual$79.991 Year
  • CollectionKeeper All Modules Annual$89.991 Year

Questions

Is libretto42 free?
libretto42 is free to download, with no in-app purchases.
Is CollectionKeeper free?
CollectionKeeper is free to download, with in-app purchases available.
Do libretto42 or CollectionKeeper have ads?
Neither libretto42 nor CollectionKeeper shows ads.
Which is updated more often, libretto42 or CollectionKeeper?
libretto42 ships an update every 3 weeks, and CollectionKeeper every 6 days. Most recently, libretto42 was updated on October 2, 2026 and CollectionKeeper on October 5, 2026.

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