PopStar with Undo vs Chess advisor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PopStar with Undo
This highly addictive puzzle game offers two distinct modes: Classic, where you clear blocks to meet level targets without a time limit, and Endless, which challenges you to clear as many blocks as possible against the clock. Features include an undo button and customizable block colors.
- Two game modes: Classic and Endless
- Tap two or more same-colored blocks
- No time limit in Classic mode
- Time-based challenges in Endless mode
- Undo button
- Customizable block colors
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Highly addictive game. Once you start, you cannot stop. There are two modes. Game rule Classic: - Tap two or more blocks, which are same color - No time limit, once you meet target you can promote to next level Endless: - Tap two or more blocks, which are same color - Tap the blocks as more and fast as you can - The more block you tap once, the more time will be added - When level up the time drain will be faster - Once time up it will game over Score rule: Score = block x block x 5 Bonus rule of Classic mode: bonus = 2000 - block x block x 20 Features: - Undo Button - 9 different color blocks, you can choose random color or fixed color
Chess advisor
Analyze chess games using a cloud engine and library, or play against it. Connect to third-party platforms to synchronize game situations and quickly improve your chess skills.
- Cloud engine analysis
- Cloud library integration
- Play against cloud engine
- Software chessboard analysis
- Third-party platform synchronization
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Chess advisor can use cloud engine and cloud library to analyze chess game, can play chess with cloud engine, can also help you analyze software chess board situation. you can connect to the third-party battle platform and synchronize the situation. Let you quickly improve the level of competition.
Screenshots
Verdict
The clearest difference is review sentiment: Chess advisor at 100% against PopStar with Undo's 33%. Chess advisor also leads on price (Free vs $4.00) and ads (none vs shown). On in-app purchases 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
Chess advisor is free to download; PopStar with Undo costs $4.00 up front. PopStar with Undo sells 1 one-off in-app purchase and Chess advisor sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
PopStar with Undo ships an update every 11 months, Chess advisor every 11 days. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.
| Parameter | PopStar with Undo | Chess advisor |
|---|---|---|
| Price | $4.00 | Free — better |
| Rating | 4.7 (6 ratings) — better | — |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | — |
| Update frequency | Every 11 months | Every 11 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 12.2 — better |
| Further details — not scored | ||
| Size | 21 MB | 134 MB |
| Age rating | 4+ | 4+ |
| Developer | Oscar Tsang | 先成 项 |
Customer experience
PopStar with Undo
Chess advisor
In-app purchases
PopStar with Undo
- Remove advertisement$1.99
Chess advisor
- Chess advisor weakly pay$3.997 Days
- Chess advisor monthly pay$9.991 Month
- Chess advisor quarterly pay$17.993 Months
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- Chess advisor yearly pay$49.991 Year
Questions
Is PopStar with Undo free?
Is Chess advisor free?
Do PopStar with Undo or Chess advisor have ads?
Which is updated more often, PopStar with Undo or Chess advisor?
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