Comparison

Osmo Detective Agency vs Stack by Stack!

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

Head to head
About

Osmo Detective Agency

Become a world-traveling detective and solve mysteries using physical game pieces and your device. Explore diverse locations, find hidden clues, and develop critical thinking skills. This app offers an engaging, hands-on learning experience for aspiring investigators.

Highlights
  • Solve global mysteries
  • Search for hundreds of clues
  • Explore eight exciting maps
  • Learn geography and culture
  • Develop critical thinking
  • Hands-on play with physical pieces
Read full description

ABOUT DETECTIVE AGENCY Get your maps, your magnifying glass, and detective skills! As the head of your own detective agency, your job is to travel the world helping people solve mysteries! But be careful! You’ll need sharp eyes, a clever mind, and a taste for adventure. Are you ready to crack the case? GET HANDS-ON WITH THE CLUES USING OSMO MAGIC! Search for hundreds of clues and solve mysteries using your magnifying glass and the maps. MASTER NEW SKILLS WITH EVERY MYSTERY! Learn about geography, landmarks, and local culture — clues are everywhere! Bring your critical thinking into play, as you connect the dots and unravel the mystery! SOLVE MYSTERIES AROUND THE WORLD! Explore eight exciting maps, including Paris, New York City, Beijing, Sydney, Rio de Janeiro, and Cairo, Osmo Town, and The World! *Play your favourite Osmo Detective Agency on iPad! Use your iPad with the Osmo Base and Detective Agency game hardware - each can be found at playosmo.com. *Requires the Osmo Play System and Detective Agency Play Pieces (including a Magnifying Glass, a Map Holder, and eight Maps) to play, found at www.playosmo.com. * Please see our device compatibility list here: https://support.playosmo.com/hc/articles/115010156067 ABOUT OSMO -- 21ST CENTURY PLAY AND LEARNING Osmo uses the screen to create a new healthy, hands-on learning experience that promotes creativity, problem-solving and social interaction. We do this with our reflective artificial intelligence technology.

About

Stack by Stack!

Features
Read full description

Stack by Stack is a clean, satisfying block puzzle where you place three pieces at a time and clear lines with rhythm. Plan ahead, build combos, and keep the board alive as the pace ramps up. Two ways to play: - Endless Mode: chase your best score with smart placement and big clears - Daily Puzzle: a fresh puzzle to solve each day Track your progress with score, lines cleared, combo streaks, and local stats.

Screenshots

Osmo Detective Agency4 screens
Stack by Stack!4 screens

Verdict

The call

The clearest difference is ads: Osmo Detective Agency at none against Stack by Stack!'s shown. Stack by Stack!'s advantage is update cadence (every 4 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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

Osmo Detective Agency ships an update every 2 months, Stack by Stack! every 4 days. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.

Scorecard2 real differences · 8 level
Osmo Detective Agency versus Stack by Stack!: the parameters behind the verdict, then further details
ParameterOsmo Detective AgencyStack by Stack!
PriceFreeFree
Rating4.1 (471 ratings) — better—
Positive reviews64.4% of reviews—
Number of ratings471 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size631 MB94 MB
Age rating4+4+
DeveloperTangible PlayByeongUk Choi

Bugs and requests

Osmo Detective Agency

Reported bugs

8 issues
  • Magnifying glass fails to detect items consistently
  • Game board not recognized by camera
  • Auto-read text feature non-functional
  • Osmo World connection drops frequently
  • App crashes or fails to load
Show 3 more
  • Game detection circle closes but item not registered
  • Rio map flowers not detected in specific location
  • App incompatible with current iOS versions requiring older versions

Requested features

7 requests
  • More maps and game content
  • Additional chapters or cases
  • Longer gameplay duration
  • Wider camera mirror piece
  • Improved magnifying glass stability
Show 2 more
  • Better Osmo World connectivity
  • Ability to access settings without multiplication knowledge

Stack by Stack!

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Osmo Detective Agency

No in-app purchases

None

Stack by Stack!

No in-app purchases

Questions

Is Osmo Detective Agency free?
Osmo Detective Agency is free to download, with no in-app purchases.
Is Stack by Stack! free?
Stack by Stack! is free to download, with no in-app purchases.
Do Osmo Detective Agency or Stack by Stack! have ads?
Stack by Stack! shows ads; Osmo Detective Agency does not.
Which is updated more often, Osmo Detective Agency or Stack by Stack!?
Osmo Detective Agency ships an update every 2 months, and Stack by Stack! every 4 days. Most recently, Osmo Detective Agency was updated on September 29, 2026 and Stack by Stack! on September 27, 2026.

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