Causality vs Ada's Study
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Manipulate time to change level outcomes
- Work with past selves
- Solve paradoxes
- Guide astronauts to safety
- 60 challenging levels
- Unlock achievements
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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
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.
- Investigate Ada Lovelace's disappearance
- Solve intricate mechanical puzzles
- Intuitive touch interactions
- Beautifully crafted 3D visuals
- Uncover a secret narrative
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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
Verdict
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
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.
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.
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.
| Parameter | Causality | Ada's Study |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 4.4 (185 ratings) — better | 3.6 (35 ratings) |
| Positive reviews | 69.8% of reviews — better | 52.6% of reviews |
| Number of ratings | 185 — better | 35 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 166 MB | 281 MB |
| Age rating | 9+ | 9+ |
| Developer | Loju LTD | Sherlocked |
Customer experience
Causality
Ada's Study
User reviews
Causality
From 185 App Store ratingsWhat 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 ratingsWhat 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
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- 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
Causality
No in-app purchases
Ada's Study
No in-app purchases









