PingPongScratch vs Grammar Spy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PingPongScratch
This application connects to a Ping-Pong robot installed on a computer, allowing users to view and interact with its scratch data on their mobile devices. It leverages the Scratch programming environment for its functionality.
- Connects to Ping-Pong robot data
- View robot scratches on mobile
- Utilizes Scratch programming environment
- Cross-device compatibility (iOS)
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It is an app that uses scratches from the Ping-Pong robot that was installed and used on a computer on a mobile phone. 로보라이즌 핑퐁로봇 스크래치 iOS Scratch is licensed under the Creative Commons BY-SA 2.0 License. For more license details, please refer to https://creativecommons.org/licenses/by-sa/2.0/
Grammar Spy
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Build your English grammar skills one short mission at a time. Grammar Spy turns grammar practice into a sentence detective game. In Error Smash, compare two sentences and identify the one with a grammar error. Then read the corrected sentence and a clear explanation. PRACTICE WITH PURPOSE • Practice present tense, past tense, and helping verbs. • Complete six-round missions without a timer. • Learn from corrections and explanations. • Revisit missed questions. • View your practice history and first-try accuracy. LEARN AT YOUR OWN PACE Practice offline, with no account required. Your progress is saved on your device. For English learners who want short, focused grammar practice.
Screenshots
Verdict
PingPongScratch and Grammar Spy are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PingPongScratch | Grammar Spy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (13 ratings) — better | — |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 352 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | RoboRisen | Gul Kan |
In-app purchases
PingPongScratch
No in-app purchases
Grammar Spy
No in-app purchases
Questions
Is PingPongScratch free?
Is Grammar Spy free?
Do PingPongScratch or Grammar Spy have ads?
Other comparisons
