Roof Rails vs Gem Stack
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Roof Rails
A challenging and addictive arcade game that is easy to learn but difficult to master. Perfect for quick gaming sessions.
- Easy to pick up
- Hard to put down
- New and original gameplay
- Perfect for killing time
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Easy to pick up HARD to put down A new and original game, perfect for killing a few minutes! Try It
Gem Stack
Collect and stack precious gems while navigating a treacherous obstacle course. Dodge traps, merge valuable gems, and protect your growing pile to reach the finish line and claim your rewards. Experience satisfying gem-collecting gameplay with bright visuals and addictive progression.
- Satisfying gem runner gameplay
- Obstacle dodging action
- Gem merging mechanics
- Bright and glittering visuals
- Addictive progression system
- Collect and stack gems
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Can you stack your way to treasure without losing a single gem? Let’s find out in Gem Stack! Enter the dazzling world of Gem Stack, the ultimate hyper-casual runner where your goal is to collect, stack, and protect precious gems while racing through a road full of obstacles and traps. Every swipe counts as you guide your growing pile of sparkling crystals toward the finish line! Slide, dodge, and merge your way through dangerous tracks. Stack your gems higher and shine brighter with every flawless run. But beware — one wrong move and your gems could shatter! How to Play Swipe left or right to move along the track. Collect colorful gems and build your stack. Avoid sharp traps and smashable obstacles. Merge rare gems to boost your score. Reach the end with your stack intact and claim your rewards! Key Features Satisfying Gem Runner Gameplay: Run, collect, and stack beautiful gems in this polished arcade experience. Obstacle Dodging Action: Avoid deadly traps, holes, and barriers. Merge Mechanics: Combine gems for higher value and more sparkle. Bright Visuals: Vivid, glittering graphics with fluid animations. Addictive Progression: Level up your runs and discover rare gem types. Why Play Gem Stack? If you love runner games with shiny rewards and satisfying stacking action, Gem Stack delivers a fast-paced and visually stunning experience. Each run is a new challenge full of glitter and glory! Download Gem Stack now and start stacking your way to gem-filled greatness!
Screenshots
Verdict
The clearest difference is ratings volume: Roof Rails at 252K against Gem Stack's 36K. Roof Rails also leads on review sentiment (43% vs 35%). On price, rating, update cadence and ads 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. Roof Rails sells 1 one-off in-app purchase and Gem Stack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.5 for Roof Rails against 4.6 for Gem Stack. That said, the two scores are not equally well evidenced: Roof Rails has 252K ratings behind it against 36K, so its average is the more settled of the two. Written reviews are what separate them: 43% of Roof Rails's written reviews are positive against 35% of Gem Stack's.
Roof Rails ships an update every 5 days, Gem Stack weekly. Both last shipped on September 24, 2026.
| Parameter | Roof Rails | Gem Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (252K ratings) | 4.6 (36K ratings) — better |
| Positive reviews | 43.2% of reviews — better | 34.9% of reviews |
| Number of ratings | 252K — better | 36K |
| Update frequency | Every 5 days — better | Weekly |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 240 MB | 389 MB |
| Age rating | 12+ | 12+ |
| Developer | Voodoo | Rollic Games |
Customer experience
Roof Rails
Gem Stack
User reviews
Roof Rails
From 252K App Store ratingsWhat we love
- 🚀 Fun and addictive game
- 👍 Great time-passer
- 🤩 Incredible experience
Room to improve
- 🔥 Too many ads
- 🐛 Glitchy and buggy
- 🤯 Impossible levels
Gem Stack
From 36K App Store ratingsWhat we love
- 🎮 Fun and addictive gameplay
- 👍 Satisfying gem crafting
- 🕹️ Works offline
Room to improve
- 🔍 Too many ads
- 🤔 Paid 'no ads' feature doesn't work
- 🐌 Glitchy and slow performance
- 💰 Purchases don't remove ads
Bugs and requests
Roof Rails
Reported bugs
3 issues- Levels with impossible obstacles
- Freezing and crashing issues
- Ads blocking UI elements
Requested features
6 requests- More difficult levels
- Longer levels
- Use for gems after unlocking characters
- Ability to change roller/bar
- Add music/sound
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- Offline play option
Gem Stack
Reported bugs
3 issues- Game crashes after certain levels
- Purchases not properly registered
- Inconsistent end-of-level experience
Requested features
4 requests- More level variety and difficulty progression
- Ability to customize gem types and jewelry
- Better in-game currency system
- Improved customer support
In-app purchases
Roof Rails
- No Ads$2.99
Gem Stack
- Remove Ads$7.99
