Comparison

The O vs Pentangle

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

Head to head
About

The O

This museum companion app uses location awareness to guide you through exhibits, providing information on artworks, amenities, and performances. It allows you to virtually queue for exhibits, save your visit details, and express your opinions on art. Consider it your personal guide to exploring the museum.

Highlights
  • Location-aware exhibit information
  • Virtual queueing for exhibits
  • Artwork 'Love' and 'Hate' feature
  • Museum map
  • Food and drink options
  • Save visit details
Features
Read full description

We don't have labels on the walls at Mona. We have the O. The O uses location awareness to locate you in and around the museum. Use it to find out about artworks nearby, food and drink options, music performances, and other stuff. Love or hate what you see, join virtual queues and wander off, save your visit, and read and listen in your language. Think of the O as your own personal visitor guide at Mona. The O is also how you navigate the Phrontisterion, Mona's library. It replaces Dewey — charting a course through the collection and linking books by association, theme, or obscure whim. Point the camera at any book cover and reveal myriad connections to other items. Search by title, subject, or curiosity. Follow a thread from one book to another, and then somewhere you didn't expect to end up. The O knows where everything is and will take you there.

About

Pentangle

Features
Read full description

Pentangle is a personal shelf for everything you love — music, movies, books, games, podcasts, and TV. Rank your favourites, build shelves by category, and discover what the people you follow are into. Add something, rank it, move on. Over time your shelf becomes an honest record of what you actually think is good — useful when someone asks, and satisfying to keep for its own sake. Follow friends and see their ranked lists. Send items directly to people you think would love them. Find others who share your taste. Your shelf. Your ranking. Your taste.

Screenshots

The O4 screens
Pentangle4 screens

Verdict

The call

The clearest difference is update cadence: The O at fortnightly against Pentangle's every 5 weeks. On price, ads, 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

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

UpkeepUpdate frequency

The O ships an update fortnightly, Pentangle every 5 weeks. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
The O versus Pentangle: the parameters behind the verdict, then further details
ParameterThe OPentangle
PriceFreeFree
Rating3.5 (6 ratings) — better—
Positive reviews23.1% of reviews—
Number of ratings6 — better—
Update frequencyFortnightly — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS18.018.0
Further details — not scored
Size63 MB23 MB
Age rating17+12+
DeveloperMUSEUM OF OLD AND NEW ARTZa Wa Da Pty Ltd

In-app purchases

None

The O

No in-app purchases

None

Pentangle

No in-app purchases

Questions

Is The O free?
The O is free to download, with no in-app purchases.
Is Pentangle free?
Pentangle is free to download, with no in-app purchases.
Do The O or Pentangle have ads?
Neither The O nor Pentangle shows ads.
Which is updated more often, The O or Pentangle?
The O ships an update fortnightly, and Pentangle every 5 weeks. Most recently, The O was updated on October 19, 2026 and Pentangle on October 6, 2026.

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