Zero vs BubbleGum CrackerJack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero
This email client is designed for legal professionals to streamline their workflow and increase billable hours. It offers features like predictive filing, inbox sorting, recipient verification, and automatic time tracking for client communications, all while adhering to strict security standards.
- Predictive message filing
- Inbox sorting by importance/sender
- Wrong recipient warnings
- Automatic time tracking
- On-device AI processing
- Strict security standards
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ZERØ’s email client has been engineered to help lawyers work less and bill more. With ZERØ, lawyers can: · Predictively file messages to their document management system or to their corresponding email folders. · Sort their inboxes by parameters such as importance and sender. · Receive a warning in real-time if they are about to send a message to a potential wrong recipient. · Automatically and contemporaneously capture the time spent interacting with client messages from their mobile devices. And as powerful as ZERØ is, the application takes into account the strictest security standards. Our proprietary AI processes data directly on the device—meaning that no user data is ever sent outside of the device for processing. ZERØ also always remains entirely within your law firm’s security perimeter. Using ZERØ, lawyers can be more productive and generate more revenue.
BubbleGum CrackerJack
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Post and promote classified advert listings in the following categories: Real Estate, Employment, Finance, Transportation. Share marketing information on products, services, sales, deals and discounts
Screenshots
Verdict
The clearest difference is update cadence: BubbleGum CrackerJack at daily against Zero's monthly. BubbleGum CrackerJack also leads on iOS requirement (13.0 vs 17.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Zero ships an update monthly, BubbleGum CrackerJack daily. The most recent releases landed on June 23, 2026 and September 10, 2026 respectively.
| Parameter | Zero | BubbleGum CrackerJack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 207 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Aderant North America, Inc. | KidBasic Corporation |
In-app purchases
Zero
No in-app purchases
BubbleGum CrackerJack
No in-app purchases
