Comparison

Callan App vs GradRoots

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

Head to head
About

Callan App

This app provides audiobooks and eBooks for students enrolled in Callan Accredited Schools. It offers practice areas for recording answers, dictations, and exercises to enhance language skills. Courses are available for General English, Business English, Children's English, and General Spanish.

Highlights
  • Audiobook and eBook access
  • Question and Answer recording
  • Dictation practice
  • Exercise testing
  • Multiple language courses
Features
Read full description

The Callan App is only available to students at Callan Accredited Schools. The App lets you listen to the audio books and read the eBooks you have bought at your school. You can also easily practise your skills wherever you are with the "Callan Student Practice Area": - record yourself in the "Question and Answer" section - practise your writing in the "Dictations" section - test yourself in the "Exercises" section Please contact the Reception at your school and ask them to register you. The Callan Method publishes courses for General English, Business English, Children's English and also General Spanish.

About

GradRoots

This AI-powered tool helps small teams boost productivity by managing donors and fundraising campaigns efficiently. It automates data entry from business cards and provides AI-assisted notes to keep everyone informed. Ideal for nonprofits and schools looking to scale their efforts without increasing staff.

Highlights
  • AI-powered contact info extraction from business cards
  • AI-assisted donor notes for context
  • Campaign creation and progress tracking
  • Donor management and linking
  • Secure data storage and organization switching
Features
Read full description

GradRoots uses AI so your small team can do more—think of it as your 3-person team working like a team of 10. Manage donors and fundraising campaigns in one place. Built for nonprofits, schools, and any organization that grows from the roots up. AI THAT SCALES YOUR TEAM • Scan a business card with your camera—AI extracts contact info so you add donors in seconds, not minutes. • Use AI-assisted notes to capture donor context quickly, so everyone stays informed without extra meetings. • Run campaigns, link donors, and see activity and insights without hiring more staff. ADD DONORS FAST • Enter details manually or let the camera + AI do the work from a business card. • Keep notes on each donor; AI helps you summarize and stay on top of who gave what. RUN CAMPAIGNS • Create campaigns with a name, goal, and dates. • Link donors and track progress from one screen. • See activity and insights so you know how you’re doing. ORGANIZED & SECURE • Switch between organizations from the home screen or Settings. • Data is stored securely and visible only to members of the same organization. Whether you’re a team of 3 or 10, GradRoots helps you manage donors, campaigns, and fundraising—so your small team can achieve more.

Screenshots

Callan App4 screens
GradRoots4 screens

Verdict

The call

The clearest difference is rating: GradRoots at 5.0 against Callan App's 1.0. GradRoots also leads on update cadence (fortnightly vs every 6 weeks). Callan App's advantage is iOS requirement (14.0 vs 16.4). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GradRoots holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Callan App ships an update every 6 weeks, GradRoots fortnightly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Callan App versus GradRoots: the parameters behind the verdict, then further details
ParameterCallan AppGradRoots
PriceFreeFree
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings11
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.4
Further details — not scored
Size22 MB58 MB
Age rating4+4+
DeveloperCallan Online LtdGradroots, Inc

Customer experience

Callan App

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

GradRoots

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Callan App

No in-app purchases

None

GradRoots

No in-app purchases

Questions

Is Callan App free?
Callan App is free to download, with no in-app purchases.
Is GradRoots free?
GradRoots is free to download, with no in-app purchases.
Which has better reviews, Callan App or GradRoots?
GradRoots is rated higher. Callan App averages 1.0 out of 5 from 1 ratings, while GradRoots averages 5.0 from 1 ratings.
Do Callan App or GradRoots have ads?
Neither Callan App nor GradRoots shows ads.
Which is updated more often, Callan App or GradRoots?
Callan App ships an update every 6 weeks, and GradRoots fortnightly. Most recently, Callan App was updated on October 24, 2026 and GradRoots on October 7, 2026.

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