Comparison

Intersign BSL vs Shell

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Intersign BSL

Learn British Sign Language (BSL) through interactive lessons, games, and a comprehensive dictionary. Designed for beginners and all learners, this app offers expert-created content to make learning fun and rewarding. Progress through structured lessons and reinforce your knowledge with practice activities.

Highlights
  • Over 50 expert-created BSL lessons
  • Interactive games and activities
  • BSL dictionary and glossary
  • Step-by-step learning for beginners
  • Reward system for motivation
Read full description

* Over 50 lessons, 3 sections and more in development made by experts in British Sign Language (BSL) to learn in an easy and fun way. * Signs may vary depending on where you live, we'll be adding sign variants in the near future. * Don't worry if you are a beginner, we will take you step by step on your British Sign Language (BSL) learning journey. * Intersign includes a dictionary and glossary for you to reinforce your knowledge of (BSL). * Get rewards while you keep learning British Sign Language (BSL). * Intersign has additional Activities and games for you to practice and continue learning British Sign Language while you play. * Intersign was created to help anyone who wants to learn British Sign Language. Feel free to reach out at "contact@intersign-apps.com". Any comments or suggestions are welcome. License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Shell

Features
Read full description

Shell-E has been developed for ecology field teaching and provides a simple way to connect practical fieldwork with real ecological data collection. Students can join an organised practical using their student number, with no need to create a conventional username and password account. Once joined, Shell-E automatically connects them to their team, demonstrator and allocated survey area. During fieldwork, students can record snail observations, capture GPS locations, add measurements and photographs, record marking information and see observations appear on the practical map. Records can also be stored safely when connectivity is poor and synced when a connection becomes available. Shell-E supports capture–mark–recapture teaching across linked practical sessions. Students can see the observed counts required for their calculations while carrying out the analysis themselves. The app also includes: • Interactive survey maps and team areas • Live team leaderboards • Field guidance and identification support • Practical-specific student onboarding • Golden Snail challenges for field sessions • Secure demonstrator marking • Historical Shell-E records and year-by-year mapping • Independent recording outside organised practicals Teaching staff can manage practicals, allocate students to teams and survey areas, control leaderboard visibility, communicate with the class and configure demonstrator access from the Teacher Admin area. Shell-E is designed primarily for ecology teaching at the University of Exeter, while also allowing independent users to contribute suitable ecological observations.

Screenshots

Intersign BSL4 screens
Shell4 screens

Verdict

The call

The clearest difference is in-app purchases: Shell at none against Intersign BSL's 3. Shell also leads on update cadence (every 10 days vs every 9 months). Intersign BSL's advantage is iOS requirement (13.0 vs 15.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Intersign BSL sells 3 in-app purchases, starting at $6.99 per month. Shell asks for nothing beyond the download.

UpkeepUpdate frequency

Intersign BSL ships an update every 9 months, Shell every 10 days. Both last shipped on October 8, 2026.

Scorecard3 real differences · 7 level
Intersign BSL versus Shell: the parameters behind the verdict, then further details
ParameterIntersign BSLShell
PriceFreeFree
Rating4.7 (11 ratings) — better—
Positive reviews75.4% of reviews—
Number of ratings11 — better—
Update frequencyEvery 9 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size143 MB25 MB
Age rating4+4+
DeveloperIntersign Apps, S.A. de C.V.Dave Hudson

In-app purchases

3 purchases

Intersign BSL

Subscriptions3
  • Intersign Premium - 1 month3 Days trial$6.991 Month
  • Premium Pass - 6 months3 Days trial$29.996 Months
  • Premium Pass - 1 year3 Days trial$49.991 Year
None

Shell

No in-app purchases

Questions

Is Intersign BSL free?
Intersign BSL is free to download, with in-app purchases available.
Is Shell free?
Shell is free to download, with no in-app purchases.
Do Intersign BSL or Shell have ads?
Neither Intersign BSL nor Shell shows ads.
Which is updated more often, Intersign BSL or Shell?
Intersign BSL ships an update every 9 months, and Shell every 10 days. Most recently, Intersign BSL was updated on October 8, 2026 and Shell on October 8, 2026.

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