Spot the difference~ vs Target Sum Chain
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Spot the difference~
Engage your observation skills by spotting subtle variations between two images. Enjoy a vast collection of over 1000 beautifully designed levels, accompanied by soothing background music. Your progress is automatically saved, allowing for seamless continuation of your puzzle-solving journey.
- Find differences between 2 pictures
- 1000+ beautiful levels
- Relaxing background music
- Auto save game progress
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Find the differences between 2 pictures. - 1000+ beautiful levels - Relaxing background music - Auto save game progress
Target Sum Chain
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Target Sum is a simple yet deep number puzzle game where you select numbers to match the TARGET. Choose numbers on the board, and clear them when their total matches the TARGET. But it’s not just about adding numbers. The key to a high score is checking which numbers are coming next and deciding which numbers to keep and which ones to use. Complete TARGETs in a row to build a CHAIN and earn even more points. Read the board, anticipate the next numbers, and discover your own strategy. Three difficulty levels are available: Beginner, Normal, and Advanced. Enjoy everything from casual play to more challenging games that require careful planning and foresight. Game Features ・Simple rules: combine numbers to make the TARGET ・Strategic foresight by checking the next numbers ・Build CHAINs with consecutive successes for higher scores ・Three difficulty levels: Beginner, Normal, and Advanced ・Track your personal best and challenge yourself again and again This number puzzle tests not only your calculation skills, but also your ability to think ahead. Keep completing TARGETs and aim for a new personal best.
Screenshots
Verdict
The clearest difference is update cadence: Target Sum Chain at daily against Spot the difference~'s every 3 weeks. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Spot the difference~ ships an update every 3 weeks, Target Sum Chain daily. The most recent releases landed on October 26, 2026 and October 17, 2026 respectively.
| Parameter | Spot the difference~ | Target Sum Chain |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (6.3K ratings) — better | — |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 6.3K — better | — |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 141 MB | 146 MB |
| Age rating | 4+ | 4+ |
| Developer | 心东 黄 | katsuya nozaki |
Bugs and requests
Spot the difference~
Reported bugs
3 issues- Game freezes/crashes on ads
- Ads block UI elements, can't close
- Minesweeper game gets stuck on levels
Requested features
5 requests- Paid version without ads
- Difficulty levels/options
- Magnifier tool for better visibility
- More diverse image themes
- Ability to save/restore progress
Target Sum Chain
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spot the difference~
No in-app purchases
Target Sum Chain
No in-app purchases
Questions
Is Spot the difference~ free?
Is Target Sum Chain free?
Do Spot the difference~ or Target Sum Chain have ads?
Which is updated more often, Spot the difference~ or Target Sum Chain?
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