Mark6 Reminder vs On99
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mark6 Reminder
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Whether you're at the counter or researching your favorite numbers at home, just open the app: 【Live Draw Information】 • Auto-sync with the latest draw results • Detailed prize breakdowns for top 3 awards 【Lucky Number Verification】 • Check past winning records for 6-20 number combinations • Special markers for jackpot-winning combos • Save and track performance of favorite numbers 【Popular Community Analysis Methods】 • Integrated statistics for big/small, odd/even, color trends • Professional analysis of long-missing cold numbers and recent hot numbers • Community-favorite prediction tools; Smart Wheel for small bets with big potential
On99
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On99 is an independent information and analysis app for Hong Kong Mark Six results, history, statistics and number tools. It is not affiliated with, endorsed by, or operated by the Hong Kong Jockey Club (HKJC). Use On99 to: - Check the latest completed draw and next-draw status - Review winning numbers and payout details by draw date - Browse yearly history and result archives - Explore statistics, jackpot records and historical outlet information - Use number-reference, overlap-analysis and combination-cost tools for personal analysis - Read guides explaining common Mark Six and prize terms Explore published results and number information in one place, with tools for personal reference.
Screenshots
Verdict
The clearest difference is ads: On99 at none against Mark6 Reminder's shown. On99 also leads on update cadence (weekly vs every 6 weeks). On price, in-app purchases, device support and iOS requirement 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.
Mark6 Reminder ships an update every 6 weeks, On99 weekly. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.
| Parameter | Mark6 Reminder | On99 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.4 |
| Further details — not scored | ||
| Size | 37 MB | 66 MB |
| Age rating | 17+ | 17+ |
| Developer | Heung Kai Chan | Ho Ngai Chan |
In-app purchases
Mark6 Reminder
No in-app purchases
On99
No in-app purchases
