Sector vs DiffChar
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sector
Generate and explore detailed star maps for your Sci-Fi RPG campaigns. Features include automatic world generation with UPP data, trade routes, and editable maps. Export maps as PDFs or text listings.
- Automatic sector generation (16 subsectors)
- Full UPP generation for worlds
- Random name generation
- Trade route calculation and display
- Editable map (add/remove worlds)
- PDF and text export
- Import plain text sector listings
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Sector is a mapping tool for classic tabletop Science Fiction Roleplaying games. With a single click Sector will generate an entire sector (16 subsectors) of worlds for you and your players to explore. • Full UPP (Universal Planetary Profile) generation for every world • Random name generation for all worlds, sectors and subsectors. • Beautiful mapping that shows the mainworld size, atmosphere and surface type at a glance. • Minor and major trade routes calculated and drawn on the map • Clusters, chains and voids are automatically detected and named • Pan and zoom the map with multitouch. Tap a world for more details. Tilt your device to shift the labels and routes slightly. • Tap the map with two fingers to show or hide the navigation and toolbars • Export your map as a beautiful PDF, or as a plain text listing. • Import original plain text sector listings in the standard format. Many classic sectors are even bundles in the app! That's not all - the map is editable! Tap the 'Edit' button and then tap hexes to remove a world you don't want, or add a world to a blank hex. Trade routes and cluster names are generated on the fly. Note: requires the use of an RPG rules system. Contains materials from the Traveller SRD document: http://www.traveller-srd.com Note: Mapping an entire sector is resource intensive. Recommended for iPad Pro and iPhone 6s devices or better.
DiffChar
Test your observation skills by finding the unique Chinese character among many that look alike. This game offers over 360 challenges, combining fun with education for a simple yet engaging experience.
- Identify unique Chinese characters
- Over 360 challenging levels
- Simple and fun gameplay
- Educational value
- Suitable for all ages
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According to statistics, the number of Chinese characters is more than 80,000, many of them look very similar. The App collects and lists some Chinese characters to see if you can find out the difference. - Find out the different one from Chinese characters! - More than 360 characters for you to challenge. - Simple, fun and educational. Come and take a challenge!
Screenshots
Verdict
The clearest difference is price: DiffChar at Free against Sector's $3.99. DiffChar also leads on rating (5.0 vs 3.8) and iOS requirement (9.0 vs 15.6). Sector's advantage is in-app purchases (none vs 3) and ratings volume (20 vs 1). On update cadence, ads 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
DiffChar is free to download; Sector costs $3.99 up front. DiffChar sells 3 one-off in-app purchases. Sector asks for nothing beyond the download.
DiffChar holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Sector has 20 ratings behind it against 1, so its average is the more settled of the two.
Sector ships an update fortnightly, DiffChar weekly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | Sector | DiffChar |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 3.8 (20 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 53.3% of reviews | — |
| Number of ratings | 20 — better | 1 |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Taptix Ltd | 景灯 梁 |
Customer experience
Sector
DiffChar
In-app purchases
Sector
No in-app purchases
DiffChar
- All Characters$0.99
- Removing balls 10 times$0.99
- Removing Ads$1.99
Questions
Is Sector free?
Is DiffChar free?
Which has better reviews, Sector or DiffChar?
Do Sector or DiffChar have ads?
Which is updated more often, Sector or DiffChar?
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