OnTrac POS vs Spark Tester
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnTrac POS
This point-of-sale system is designed for thrift stores, offering tools to streamline sales, manage payments, and track store performance. It allows for centralized configuration of sales categories, tax information, and receipt layouts.
- Integrated payment processing
- Centralized online management portal
- Cash drawer reconciliation
- Customizable receipt printing
- Store performance metrics
- Manager approval for payments
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OnTrac, part of the comprehensive ThriftTrac™ platform, is a point of sales system tailored to the unique needs of the thrift industry to provide powerful and intuitive tools streamlining your business. FEATURES: - Optionally accept integrated payments via Dejavoo, Heartland Payment Systems or BridgePay, for gift cards, debit and credit - Configure your sales categories, sales tax information, receipt layout and more in a centralized online management portal - Reconcile cash drawers and report upon metrics with ease using ThriftTrac™ - Print customized receipts from a variety of supported StarMicronics printers - Easily view store performance metrics for the day - Configure payment methods to require manager approval - Allow managers to temporarily use a cashier's active cash drawer - And so much more! * requires an active internet connection
Spark Tester
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This app provides Bluetooth connectivity to the Solmax S-100 Spark Tester. It enables users to apply activation codes and monitor the remaining activation time.
Screenshots
Verdict
The clearest difference is update cadence: OnTrac POS at every 3 weeks against Spark Tester's every 41 months. Spark Tester's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OnTrac POS ships an update every 3 weeks, Spark Tester every 41 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | OnTrac POS | Spark Tester |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 41 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Slack | John Dee Martin Company |
In-app purchases
OnTrac POS
No in-app purchases
Spark Tester
No in-app purchases
Questions
Is OnTrac POS free?
Is Spark Tester free?
Do OnTrac POS or Spark Tester have ads?
Which is updated more often, OnTrac POS or Spark Tester?
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