CatEyeSYNC vs Millennium Running
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CatEyeSYNC
Control and customize your CatEye bike lights. Connect multiple lights, adjust modes, and monitor battery levels for an enhanced cycling experience.
- Connect multiple lights
- Customize light modes
- View battery levels
- Works with CatEye Sync products
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CatEyeSYNC™ App works with CatEye lights. With this app, you can set up multiple Cateye Sync products to connect, customize light modes and view battery levels of each light.
Millennium Running
This app promotes healthy lifestyles through a variety of signature road races and triathlons. It also offers a running specialty store, a running club, and comprehensive timing and event services.
- Signature road races and triathlons
- Running specialty store
- Millennium Running Club
- Timing and event services
- Promotes healthy lifestyles
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Millennium Running is fueled by the passion of promoting healthy, enjoyable lifestyles. With over a dozen Signature road races and triathlons, a running specialty store, the Millennium Running Club, plus all-purpose timing and event services.
Screenshots
Verdict
The clearest difference is review sentiment: Millennium Running at 75% against CatEyeSYNC's 14%. Millennium Running also leads on rating (4.8 vs 1.8) and update cadence (every 2 weeks vs every 6 weeks). CatEyeSYNC's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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.
Millennium Running holds the better App Store score, 4.8 against 1.8. Both are backed by a comparable volume of ratings — 12 and 40 respectively. Written reviews point the same way: 14% of CatEyeSYNC's written reviews are positive against 75% of Millennium Running's.
CatEyeSYNC ships an update every 6 weeks, Millennium Running every 2 weeks. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.
| Parameter | CatEyeSYNC | Millennium Running |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (12 ratings) | 4.8 (40 ratings) — better |
| Positive reviews | 14.3% of reviews | 75.0% of reviews — better |
| Number of ratings | 12 | 40 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 44 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | CatEye Co., Ltd. | MILLENNIUM RUNNING, LLC |
Customer experience
CatEyeSYNC
Millennium Running
In-app purchases
CatEyeSYNC
No in-app purchases
Millennium Running
No in-app purchases
Questions
Is CatEyeSYNC free?
Is Millennium Running free?
Which has better reviews, CatEyeSYNC or Millennium Running?
Do CatEyeSYNC or Millennium Running have ads?
Which is updated more often, CatEyeSYNC or Millennium Running?
Other comparisons
