Cotter AL Abacus vs ACSI Professional Development
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cotter AL Abacus
This educational tool uses a unique double-sided abacus to teach arithmetic concepts through visualization and quantity recognition. It helps learners develop mental strategies for faster mastery of basic math skills.
- Double-sided abacus design
- Grouped in fives and tens
- Focuses on quantity recognition
- Develops mental math strategies
- Supports visual learning
- Includes sample lessons
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Cotter AL Abacus, used with the RightStart™ Mathematics program, now available on your iPhone and iPad! This abacus will teach, not calculate like the Japanese and Chinese abacus, while using subitizing (quantity recognition) and visual strategies to support learning and understanding. Perfect for visual learners! This unique double-sided abacus is grouped in fives and tens for quick recognition of quantities. The second side of the abacus focuses on trading to the thousands. Learn the facts easily by: * visualizing quantities, * minimizing counting, and * developing mental strategies. Those learning arithmetic with the Cotter AL Abacus have a better understanding of basic concepts and need less time to master arithmetic. Although children do enjoy using the abacus, it does not become a crutch. Stan, age 5, was asked how much is 11 plus 6. He replied, “17!” When he was asked how he knew, he replied with a grin, “I’ve got the abacus in my mind.” App has links to sample addition, subtraction, multiplication, and division lessons as well as detailed use information.
ACSI Professional Development
This app connects Christian educators with professional learning opportunities. Access event schedules, details, and engage live with speakers and fellow educators. Stay updated with ongoing resources designed for the Christian education community.
- Professional learning opportunities
- Event schedules and details
- Live event engagement
- Speaker information and handouts
- Ongoing updates and resources
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The free ACSI Professional Development app connects Christian educators with professional learning opportunities available through ACSI membership. Download the app today and plug into the community of Christian educators in your region. You'll gain access to: - current schedules of professional events and activities in your region and nationally - event details, notes and handouts, speaker information, etc. - live event engagement through social media, surveys, polls, and more - ongoing updates and resources for Christian educators
Screenshots
Verdict
The clearest difference is review sentiment: ACSI Professional Development at 100% against Cotter AL Abacus's 47%. ACSI Professional Development also leads on price (Free vs $1.99) and rating (4.3 vs 3.5). Cotter AL Abacus's advantage is device support. On ratings volume 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
ACSI Professional Development is free to download; Cotter AL Abacus costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ACSI Professional Development holds the better App Store score, 4.3 against 3.5. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 47% of Cotter AL Abacus's written reviews are positive against 100% of ACSI Professional Development's.
| Parameter | Cotter AL Abacus | ACSI Professional Development |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.5 (6 ratings) | 4.3 (3 ratings) — better |
| Positive reviews | 47.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 3 |
| Update frequency | Every 9 months | — |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 76 MB | 73 MB |
| Age rating | 4+ | 17+ |
| Developer | Activities for Learning inc. | Association of Christian Schools International |
Customer experience
Cotter AL Abacus
ACSI Professional Development
In-app purchases
Cotter AL Abacus
No in-app purchases
ACSI Professional Development
No in-app purchases
Questions
Is Cotter AL Abacus free?
Is ACSI Professional Development free?
Which has better reviews, Cotter AL Abacus or ACSI Professional Development?
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