Ultra Reaction vs Paperback
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultra Reaction
Test and improve your reflex speed with this engaging game. Compete across multiple modes, track your progress, and challenge friends to become the ultimate speed champion. It's a fun way to enhance reaction times for various fast-paced activities.
- 3 game modes (responsive, dynamic, endless)
- 7 difficulty levels
- Game Center integration
- Leaderboard and achievements
- Reaction time training
- Improve speed and agility
- Enhance concentration and endurance
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Let's see who's faster with this reflex testing game. Improve your reaction speed and you'll even get better in other fast-paced games. √ 3 game modes (Responsive, Dynamic, Endless) and 9 levels √ 5 visual themes and 6 alternate app icons with the Supporter Pack √ a proven way to train and improve your reaction times Game modes: √ RESPONSIVE How quick are you? Test your reaction speed and monitor your improvement. Tap the squares as quickly as possible as soon as they appear. Perfect for improving your response time. √ DYNAMIC Try to reach your top speed! Hit the targets in the right order and dodge the red ones. Hit as many targets as possible in 30 seconds. Improve your speed and agility. √ ENDLESS Only the strong survive. Test your ability and concentration with this endurance mode. Hit the blue targets before they disappear in waves of increasing difficulty. A great way to improve your speed, agility, concentration and endurance.
Paperback
This app provides an ad-free reading experience for comics and manga from a Komga server. It offers extensive customization through a scripting API, allowing users to extend its functionality with TypeScript or JavaScript.
- Ad-free reading
- Komga server support
- TypeScript/JavaScript scripting API
- Extensible functionality
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An Ad-Free Komga client for iOS. Supports an extensive scripting API using TypeScript/JavaScript to extend the app functionality.
Screenshots
Verdict
The clearest difference is in-app purchases: Paperback at none against Ultra Reaction's 2. Paperback also leads on update cadence (every 2 weeks vs every 5 months) and ratings volume (643 vs 69). On price, rating, review sentiment and ads 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. Ultra Reaction sells 2 one-off in-app purchases. Paperback asks for nothing beyond the download.
Ultra Reaction holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Paperback has 643 ratings behind it against 69, so its average is the more settled of the two. Written reviews point the same way: 58% of Ultra Reaction's written reviews are positive against 54% of Paperback's.
Ultra Reaction ships an update every 5 months, Paperback every 2 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Ultra Reaction | Paperback |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (69 ratings) — better | 4.3 (643 ratings) |
| Positive reviews | 58.2% of reviews — better | 53.5% of reviews |
| Number of ratings | 69 | 643 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | Fabio Bassan | Faizan Durrani |
Customer experience
Ultra Reaction
Paperback
Bugs and requests
Ultra Reaction
Not enough reviews yet to summarise bugs or requests.
Paperback
Reported bugs
3 issues- JSON token errors when interacting with server
- Inability to add/remove manga from library
- Disappearing navigation UI elements
Requested features
4 requests- Bookmark/resume reading feature
- Panel-by-panel/smart panel reading mode
- Sync reading progress across devices
- Better documentation and support resources
In-app purchases
Ultra Reaction
- Remove ads$0.99
- Supporter Pack$0.99
Paperback
No in-app purchases
Questions
Is Ultra Reaction free?
Is Paperback free?
Which has better reviews, Ultra Reaction or Paperback?
Do Ultra Reaction or Paperback have ads?
Which is updated more often, Ultra Reaction or Paperback?
Other comparisons
