Greatest Common Divisor vs Jackson
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Greatest Common Divisor
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This app calculates the largest divisor that is common to two positive integers.
Jackson
Access all library services, events, hours, and locations. Log in to manage your account, check book status, and sign up for a library card or e-card. Connect with social media for updates.
- Library services and events listing
- Hours and locations
- Account login and book status
- Library card and e-card sign-up
- Social media integration
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The library would like to introduce our new app. All of our services and events are listed, along with our Hours and Locations. Connect with our Social Media and log into your account to check the status of your library books. If you don't have a library card please sign up for a card or an e-card. (Restrictions apply). Mobile app version: 6.24.2
Screenshots
Verdict
The clearest difference is price: Jackson at Free against Greatest Common Divisor's $0.99. Jackson also leads on update cadence (every 3 months vs every 36 months). Greatest Common Divisor's advantage is iOS requirement (11.0 vs 15.1). On ads, in-app purchases 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
Jackson is free to download; Greatest Common Divisor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Greatest Common Divisor ships an update every 36 months, Jackson every 3 months. The most recent releases landed on September 27, 2026 and November 3, 2026 respectively.
| Parameter | Greatest Common Divisor | Jackson |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 36 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Manfred Breede | Jackson Madison County Library |
In-app purchases
Greatest Common Divisor
No in-app purchases
Jackson
No in-app purchases
Questions
Is Greatest Common Divisor free?
Is Jackson free?
Do Greatest Common Divisor or Jackson have ads?
Which is updated more often, Greatest Common Divisor or Jackson?
Other comparisons
