PopStar with Undo vs ColdWord
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
ColdWord
A simple yet addictive word guessing game where players aim to find a secret five-letter word within six attempts. Use color-coded clues to determine if your guessed letters are too early, too late, or correct in the alphabet.
- Guess 5-letter words
- 6 attempts per word
- Alphabetical color clues (Green, Blue, Red)
- Apple Watch support
- Unlimited hints (Pro)
- Secret word reveal (Pro)
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This is a word guessing game, deceptively simple and very addictive. Newly added Apple Watch support! RULES • The goal is to guess the secret 5-letter word in 6 tries. • Each guess must be a valid 5-letter word. • A GREEN circle means you've guessed the letter. • A BLUE circle means the letter is too cold, meaning it's BEFORE the actual letter in the alphabet. • A RED circle means the letter is too warm, meaning it's AFTER the actual letter in the alphabet. PRO Upgrading to pro will unlocks the following benefits • Apple Watch support. • Unlimited hints. • Secret word reveal at the end.
Screenshots
Verdict
PopStar with Undo and ColdWord both sit at 4.7 stars, but that hides the real split: 80% of ColdWord's written reviews are positive against 33% of PopStar with Undo's. ColdWord also leads on price (Free vs $4.00) and ads (none vs shown). On rating, update cadence and in-app purchases 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
ColdWord is free to download; PopStar with Undo costs $4.00 up front. PopStar with Undo sells 1 one-off in-app purchase and ColdWord sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for PopStar with Undo against 4.6 for ColdWord. That said, the two scores are not equally well evidenced: ColdWord has 90 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 33% of PopStar with Undo's written reviews are positive against 80% of ColdWord's.
PopStar with Undo ships an update every 11 months, ColdWord every 7 months. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.
| Parameter | PopStar with Undo | ColdWord |
|---|---|---|
| Price | $4.00 | Free — better |
| Rating | 4.7 (6 ratings) — better | 4.6 (90 ratings) |
| Positive reviews | 33.3% of reviews | 80.0% of reviews — better |
| Number of ratings | 6 | 90 — better |
| Update frequency | Every 11 months | Every 7 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 16.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Oscar Tsang | Actowise LLC |
Customer experience
PopStar with Undo
ColdWord
In-app purchases
PopStar with Undo
- Remove advertisement$1.99
ColdWord
- Pro Lifetime$3.99
- Pro Lifetime$7.99
Questions
Is PopStar with Undo free?
Is ColdWord free?
Which has better reviews, PopStar with Undo or ColdWord?
Do PopStar with Undo or ColdWord have ads?
Which is updated more often, PopStar with Undo or ColdWord?
Other comparisons
