Comparison

Causality vs Ada's Study

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

Head to head
About

Causality

Manipulate time to solve intricate puzzles and guide stranded astronauts to safety. Work with your past selves across alien landscapes to overcome paradoxes and complete hazardous levels within a time limit.

Highlights
  • Manipulate time to change level outcomes
  • Work with past selves
  • Solve paradoxes
  • Guide astronauts to safety
  • 60 challenging levels
  • Unlock achievements
Features
Read full description

Causality is a puzzle game about manipulating time, altering the sequence of events and changing the outcome of each level. Set across strange and alien landscapes, help a group of stranded astronauts find a route to safety. Travel through time, work with your past selves and solve paradoxes as you take on this uniquely challenging puzzler. Each level represents a brief but hazardous moment in time. Levels are completed by guiding each astronaut to an exit that matches their colour, within a limited time frame. When all astronauts reach an exit the level is complete. - Control time and change the outcome of each level - Work with your past selves to solve puzzles - 60 levels to complete - 13 achievements to unlock

About

Ada's Study

Explore Ada Lovelace's study to uncover a hidden mystery. Solve intricate mechanical puzzles and interact with objects using intuitive touch controls in a beautifully crafted 3D environment. Unravel secrets of epic proportions in this engaging puzzle adventure.

Highlights
  • Investigate Ada Lovelace's disappearance
  • Solve intricate mechanical puzzles
  • Intuitive touch interactions
  • Beautifully crafted 3D visuals
  • Uncover a secret narrative
Features
Read full description

Investigate the disappearance of Ada Lovelace and uncover a secret of epic proportions. A short, high quality game packed with intricate mechanical puzzles and a fascinating mystery, developed by Sherlocked. Dust swirls through her study. Clearly, nobody has been in here for years. The room is filled with desks, cupboards, books, and notes on top of notes. This is the last workplace of Ada Lovelace, the brilliant pioneer of programming, and she has been hiding something. Work your way through every challenge she has left, but beware, you’re not the only person doing the investigating… If you’re a fan of games like “The Room” and “The House of Da Vinci” chances are high you’ll enjoy Ada’s Study. INVESTIGATE ADA LOVELACE Uncover a mystery around the historical figure of Ada Lovelace, the genius mathematician and computer programming pioneer. INTRICATE PUZZLES Solve challenging mechanical puzzles that connect to a larger narrative. INTUITIVE TOUCH INTERACTIONS Interact with objects in a tactile way using natural touch controls. BEAUTIFULLY CRAFTED 3D VISUALS Explore a carefully crafted world set in Victorian London with visuals that push the boundary of mobile graphics.

Screenshots

Causality4 screens
Ada's Study4 screens

Verdict

The call

The clearest difference is rating: Causality at 4.4 against Ada's Study's 3.6. Causality also leads on review sentiment (70% vs 53%) and ratings volume (185 vs 35). Ada's Study's advantage is update cadence (every 2 weeks vs every 3 months) and price ($0.99 vs $1.99). On ads, in-app purchases, monetization model 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

Causality costs $1.99 and Ada's Study $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Causality holds the better App Store score, 4.4 against 3.6. That said, the two scores are not equally well evidenced: Causality has 185 ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 70% of Causality's written reviews are positive against 53% of Ada's Study's.

UpkeepUpdate frequency

Causality ships an update every 3 months, Ada's Study every 2 weeks. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

Scorecard6 real differences · 4 level
Causality versus Ada's Study: the parameters behind the verdict, then further details
ParameterCausalityAda's Study
Price$1.99$0.99 — better
Rating4.4 (185 ratings) — better3.6 (35 ratings)
Positive reviews69.8% of reviews — better52.6% of reviews
Number of ratings185 — better35
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size166 MB281 MB
Age rating9+9+
DeveloperLoju LTDSherlocked

Customer experience

Causality

All ratings185 ratings
Positive83.8%
Neutral5.9%
Negative10.3%
Written reviews139 reviews
Positive69.8%
Neutral8.6%
Negative21.6%

Ada's Study

All ratings35 ratings
Positive60.0%
Neutral14.3%
Negative25.7%
Written reviews38 reviews
Positive52.6%
Neutral18.4%
Negative28.9%

User reviews

Causality

From 185 App Store ratings

What we love

  • 🚀 Unique and challenging puzzles
  • 👍 Intuitive and easy-to-use UI
  • 🎨 Beautiful graphics and sound design
  • 💡 Innovative time travel mechanics
  • 🧠 Mind-bending gameplay

Room to improve

  • 🐛 Bugs and glitches in certain levels
  • 🤔 Lack of clear instructions or tutorials
  • 🕹️ Unintuitive controls on some devices
  • 🔁 Repetitive gameplay after a while

Ada's Study

From 35 App Store ratings

What we love

  • ✨ Beautiful graphics and art
  • 🧩 Clever and well-crafted puzzles
  • 📚 Captivating and interesting story
  • 👍 Smooth and intuitive gameplay
  • 💡 Well-developed host personality

Room to improve

  • ⏳ Too short for the price
  • 🤏 Very short game length
  • 📉 Anticlimactic ending
  • 💸 Not worth the cost
  • 🤔 Puzzles too easy

Bugs and requests

Causality

Reported bugs

3 issues
  • Certain levels (e.g. 307, 407, 410) not working as expected
  • Game crashing or freezing on some devices
  • Issues with achievements not unlocking properly

Requested features

4 requests
  • More levels and content
  • Ability to replay completed levels
  • Cloud save/sync support
  • Difficulty settings or options

Ada's Study

Reported bugs

6 issues
  • Gold nub missing from mapping desk
  • Scales string and key string not working
  • Bugs requiring restarts
  • Bookshelf puzzle unplayable
  • Puzzles not working/broken
Show 1 more
  • Weight puzzle broken

Requested features

4 requests
  • More content/longer game
  • Sequels or more chapters
  • More impactful choices
  • Full-fledged multi-room game

In-app purchases

None

Causality

No in-app purchases

None

Ada's Study

No in-app purchases

Questions

Is Causality free?
Causality costs $1.99, with no in-app purchases.
Is Ada's Study free?
Ada's Study costs $0.99, with no in-app purchases.
Which has better reviews, Causality or Ada's Study?
Causality is rated higher. Causality averages 4.4 out of 5 from 185 ratings, while Ada's Study averages 3.6 from 35 ratings.
Do Causality or Ada's Study have ads?
Neither Causality nor Ada's Study shows ads.
Which is updated more often, Causality or Ada's Study?
Causality ships an update every 3 months, and Ada's Study every 2 weeks. Most recently, Causality was updated on October 1, 2026 and Ada's Study on October 3, 2026.

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