Ninja Star Dojo vs Gem Digger
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Ninja Star Dojo
Engage in fast-paced action by selecting a ninja and launching stars to destroy approaching balls. Match colors for powerful combos and high scores across 25 challenging levels. Enjoy retina-quality graphics and custom soundtracks.
- 3 Ninja characters
- 25 action-packed levels
- Color matching combos
- Retina quality graphics
- Custom sound tracks
- Unlockable content through gameplay
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Ninja Star Dojo is a great pick up and play action game! Select one of 3 Ninjas and throw deadly ninja stars to blast away the balls as they approach your base. Match colors to create massive destructive combos for huge scores! Features: ** 25 Action packed and challenging levels ** Universal App supporting all recent iPhone, iPad and iPod touch models ** Beautiful retina quality graphics ** Top notch custom sound tracks ** 100% Free -- All items and levels can be easily unlocked through gameplay only. Check it out today!
Gem Digger
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Dig into a collapsing cave, grab your gem quota, and reach the exit before the clock runs out. One wrong dig and a boulder lands on your head. Gem Digger is a boulder-physics puzzle game in the classic cave-arcade tradition. The first world and unlimited Endless runs are free; three more worlds are one-time unlocks. Rocks and gems fall and roll by rules you can learn, so a cave is something you solve, not something you grind. FREE, WITH NO TIMERS • Dirt Mines: 60 handcrafted caves • Endless mode: unlimited generated caves, free forever, each one checked against a solver before it is served • No energy meters and no lives to wait out, in the free worlds and the paid ones alike MECHANICS TO MASTER • Drop a boulder on a butterfly and it bursts into the gems you need • Wall the amoeba in and it turns to gems; let it sprawl and it turns to rock • Magic walls turn falling boulders into gems, but not for long • Outsmart fireflies, and learn slime and the falling-rock rules • Chase three stars on every cave; the third one needs a clear under par THREE MORE WORLDS Crystal Caves, Magma Depths and Frozen Hollow add 45 caves each. Each is a one-time in-app purchase, or take all three at once. No subscription, no consumables, nothing expires, and a single purchase restores across your devices. Built for touch: swipe anywhere or use the on-screen pad. Landscape, and it plays offline. Gem Digger shows ads between runs. A one-time Remove Ads purchase turns them off.
Screenshots
Verdict
The clearest difference is in-app purchases: Ninja Star Dojo at none against Gem Digger's 6. Ninja Star Dojo also leads on ads (none vs shown). Gem Digger's advantage is update cadence (every 3 months vs every 119 months). On price, 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. Gem Digger sells 6 one-off in-app purchases. Ninja Star Dojo asks for nothing beyond the download.
Ninja Star Dojo ships an update every 119 months, Gem Digger every 3 months. The most recent releases landed on September 7, 2026 and September 24, 2026 respectively.
| Parameter | Ninja Star Dojo | Gem Digger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 119 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 52 MB |
| Age rating | 9+ | 4+ |
| Developer | Brian TEETER | Seif Ibrahim |
In-app purchases
Ninja Star Dojo
No in-app purchases
Gem Digger
- Crystal Caves$2.99
- Magma Depths$2.99
- Frozen Hollow$2.99
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- Remove Ads$3.99
- Unlock All Worlds$6.99
- Complete Edition$9.99
Questions
Is Ninja Star Dojo free?
Is Gem Digger free?
Do Ninja Star Dojo or Gem Digger have ads?
Which is updated more often, Ninja Star Dojo or Gem Digger?
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