Aztec iServe vs Big TAP's
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Aztec iServe
This application provides a streamlined interface for managing orders and processing payments directly from a handheld device. It allows staff to serve customers more efficiently, even when offline, and syncs data once connectivity is restored.
- Take orders remotely
- Process payments
- Offline ordering capability
- Increase transaction speed
- Suggested ordering for increased spend
- Enhance staff productivity
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iServe from Zonal delivers a slick user experience for your team, providing them with access to Aztec EPoS functionality on an iPod or iPad. From anywhere in your venue, team members can take orders, print and process payments, providing a superior service to customers. Should Wi-Fi become unavailable, iServe will notify the user but continue to operate for ordering. Once the connection is re-established, offline orders will be submitted to the EPoS network. iServe enables orders to be processed faster and tables turned around quicker, staff visits to the bar and kitchen are reduced leaving your team more time to focus on your customerβs experience. Feature Snapshot β’ Increase transaction speed β’ Increase spend per head through suggested ordering β’ Enhance team productivity and efficiency β’ Reduce hardware costs β’ Cost-effective handheld solution ZCF and Aztec are required for iServe. Please refer to the release notes for further information or contact your Zonal representative who can describe the latest versions of both ZCF and Aztec that are available on the latest bundle.
Big TAP's
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This is the tablet app version of S4labour's TAP's functionality, allowing employees to tap in and out for their shifts. To be able to use this app, you must already have an S4labour user profile and have subscribed to the Big TAP's module. Please contact your account manager for further information on activating this functionality.
Screenshots
Verdict
The clearest difference is update cadence: Aztec iServe at every 6 weeks against Big TAP's's every 3 months. Aztec iServe also leads on device support (3 vs 1). Big TAP's's advantage is iOS requirement (13.4 vs 15.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Aztec iServe ships an update every 6 weeks, Big TAP's every 3 months. The most recent releases landed on June 4, 2026 and May 14, 2026 respectively.
| Parameter | Aztec iServe | Big TAP's |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | β |
| Update frequency | Every 6 weeks β better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPad, iPod β better | iPad |
| Requires iOS | 15.0 | 13.4 β better |
| Further details β not scored | ||
| Size | 18 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Zonal Retail Data Systems Limited | S4LABOUR LIMITED |
In-app purchases
Aztec iServe
No in-app purchases
Big TAP's
No in-app purchases







