# Cazalys Cairns vs BatteryCheck100 +PRO

Cazalys Cairns and BatteryCheck100 +PRO are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Cazalys Cairns | BatteryCheck100 +PRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | — | Free |
| Size | 136 MB | 41 MB |
| Requires iOS | 11 | **10.3** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Cazalys Cairns Limited](https://appshunter.io/developer/1113901143) | [BM PRO](https://appshunter.io/developer/849500568) |

## What reviewers say

### Cazalys Cairns

[App page](https://appshunter.io/ios/app/cazalys-cairns/id1113901144)

**Features:** macOS Compatibility

**In-app purchases:** none


### BatteryCheck100 +PRO

[App page](https://appshunter.io/ios/app/batterycheck100-plus-pro/id1477736030)

Monitor your recreational vehicle's deep cycle battery in real-time. Track voltage, current, temperature, and estimated charge/health status wirelessly via Bluetooth. Ideal for ensuring your battery is ready for your next adventure.

**Highlights:** Real-time battery data, Wireless Bluetooth monitoring, Voltage, current, and temperature tracking, Estimated charge and health status, Supports lead-acid and LiFePO4 batteries (PRO), Works with parallel battery banks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cazalys Cairns free?

Cazalys Cairns is free to download, with no in-app purchases.

### Is BatteryCheck100 +PRO free?

BatteryCheck100 +PRO is free to download, with no in-app purchases.

### Do Cazalys Cairns or BatteryCheck100 +PRO have ads?

Neither Cazalys Cairns nor BatteryCheck100 +PRO shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*