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.
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.
- 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 descriptionHide 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.
Stack by Stack!
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Osmo Detective Agency | Stack by Stack! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (471 ratings) — better | — |
| Positive reviews | 64.4% of reviews | — |
| Number of ratings | 471 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 631 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Tangible Play | ByeongUk 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 moreShow fewer
- 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 moreShow fewer
- 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
Osmo Detective Agency
No in-app purchases
Stack by Stack!
No in-app purchases
Questions
Is Osmo Detective Agency free?
Is Stack by Stack! free?
Do Osmo Detective Agency or Stack by Stack! have ads?
Which is updated more often, Osmo Detective Agency or Stack by Stack!?
Other comparisons















