RPD vs air
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
RPD
A pixel art tower defense game where you combine shapes to level up your defenses and defeat waves of enemies. Test your luck and strategy to survive and earn rewards.
- Combine shapes to level up
- Defeat enemies for gold
- Upgrade defense colors
- Receive round breakthrough rewards
- Strategic placement of defenses
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A mobile sequel from the creators of StarCraft's popular Use Map Random Pyramid Defense has been released! Test your luck and judgment! ▶ Combine 3 same shapes to level up! ▶ Defeat enemies and get gold. If there are more than 80 enemies, you are defeated! ▶ Choose one color, and Upgrade it! ▶ Change other colors to upgraded colors. Only 2-level shapes can be changed! ▶ Whenever you break through a certain round, you will receive a reward! ● How to play Level up shapes: touch and drag to overlap 3 identical shapes Defeat Enemies: Automatically attack by dragging a shape to place an enemy within the attack range Change Color: Touch a 2-level shape and press the Change button Developer site: https://tjdgusshdwkd.blogspot.com Developer email: tjdgusshdwkd@gmail.com
air
Defend against incoming luggage as a frog in this tower defense game. Purchase upgrades for towers and health to progress further. Customize your character with unlockable outfits and hats.
- 70+ unique upgrades
- Ultimate Upgrades for endgame
- 7 unlockable levels
- Character customization (hats, skins)
- Unique achievements
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Play as a Frog, and don't let any luggage through! Buy upgrades in the shop, such as towers and health, to make it as far as you can! Discover secret interactions and interesting synergies, and earn Star Coins to get outfits and hats! Features 70+ unique upgrades, all with interesting synergies! Ultimate Upgrades that add a twist to the endgame 7 unlock-able levels spanning a range of difficulties Tons of hats, skins, and planes to customize your character with A couple of unique achievements for the insane!
Screenshots
Verdict
The clearest difference is price: RPD at Free against air's $4.99. RPD also leads on rating (5.0 vs 4.5) and update cadence (every 9 days vs every 9 months). air's advantage is ads (none vs shown) and review sentiment (89% vs 80%). On 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
RPD is free to download; air costs $4.99 up front. RPD sells 6 one-off in-app purchases and air sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
RPD holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 19 respectively. Written reviews complicate that: 80% of RPD's written reviews are positive against 89% of air's, so the app with the better star average is not the one people write more warmly about.
RPD ships an update every 9 days, air every 9 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.
| Parameter | RPD | air |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (4 ratings) — better | 4.5 (19 ratings) |
| Positive reviews | 79.6% of reviews | 88.9% of reviews — better |
| Number of ratings | 4 | 19 — better |
| Update frequency | Every 9 days — better | Every 9 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 114 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Sunghyun Park | Brendan Roarty |
Customer experience
RPD
air
In-app purchases
RPD
- RPD 3x Speed$0.49
- RPD Remove Ads$0.49
- RPD Skip Button$0.99
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- RPD 100,000 kills6 variants$2.99
- RPD 100,000kills$2.99
- RPD 100,000 kills2 variants$3.99
air
- Retry Tokens$0.99
- Star Stack$0.99
- Star Bundle$1.99
