Zacurate
Zacurate Pro Series 500DL
$19.99Cheaper
Best Pulse Oximeters · head-to-head
Zacurate Pro Series 500DL vs iHealth Air PO3M
A sourced, side-by-side comparison. Zacurate Pro Series 500DL is cheaper at $19.99. Every spec and price links to its source.
iHealth Labs
iHealth Air PO3M
$69.99
Which is better: the Zacurate Pro Series 500DL or iHealth Air PO3M?
On the specs we track, they're closely matched. The Zacurate Pro Series 500DL is the cheaper at $19.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Zacurate Pro Series 500DL | iHealth Air PO3M |
|---|---|---|
| US price | $19.99 | $69.99 |
| Brand | Zacurate | iHealth Labs |
| Released | — | — |
| Spo2 range | 0-100% | 70-99% |
| Spo2 accuracy percent | ±2% (70-99%) | ±2% (70-99%) |
| Pulse rate range bpm | 25-250 bpm | 30-250 bpm |
| Display type | LED numeric display | Bright LED numeric display |
| Perfusion index | No | — |
| Continuous monitoring | No | No |
| Bluetooth | No | Yes |
| Battery life hr | 35 | — |
Sources — Zacurate Pro Series 500DL: zacurate.com (verified 2026-08-01). iHealth Air PO3M: support.ihealthlabs.com (verified 2026-08-01).
What's the difference between the Zacurate Pro Series 500DL and iHealth Air PO3M?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Spo2 range: Zacurate Pro Series 500DL 0-100% vs iHealth Air PO3M 70-99%
- Pulse rate range bpm: Zacurate Pro Series 500DL 25-250 bpm vs iHealth Air PO3M 30-250 bpm
- Display type: Zacurate Pro Series 500DL LED numeric display vs iHealth Air PO3M Bright LED numeric display
- Bluetooth: Zacurate Pro Series 500DL false vs iHealth Air PO3M true