NL Connect vs SMSDefender
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NL Connect
Wirelessly monitor and control National Luna Bluetooth-enabled fridges and battery systems. Track voltages, charge states, temperatures, and adjust settings remotely. Receive notifications for critical conditions like low batteries or faults.
- Monitor battery voltage and charge state
- Track live charge/discharge currents
- Customize timer and alarm parameters
- Adjust operating thresholds
- Monitor fridge temperatures and status
- Control temperature set-points
- Adjust fridge operating modes
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Interact wirelessly with your National Luna Bluetooth-enabled fridges and battery systems. With NL Connect you can : Monitor battery system voltages and charge state. Monitor live charge and discharge currents. Customise timer and alarm parameters. Adjust operating thresholds for different vehicles. Get notified of low-battery conditions. Monitor live fridge temperatures and status. Control temperature set-points. Adjust fridge operating modes. Get notified of fault conditions. Currently supports Bluetooth-enabled LEGACY fridges and Power Packs.
SMSDefender
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The best and simplest way to filter out spam SMS messages! Quickly set up easy to understand rules for the messages you don't want to get notified about. After setting up your rules, to enable SMSDefender: • Go to Settings -> Messages -> Unknown & Spam • Then enable Filter Unknown Senders • Then select SMSDefender and choose Enable NOTE: rules will only run against unknown numbers The benefits of using SMSDefender: • Small app with no bloat. • No data gets sent or requested from any server. • Complete privacy. • All of your data is local. • Syncing of your rules to your iCloud profile. • Trusted app from a trusted software development company.
Screenshots
Verdict
The clearest difference is iOS requirement: SMSDefender at 15.6 against NL Connect's 18.6. On price, update cadence, 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.
NL Connect ships an update every 14 months, SMSDefender every 13 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | NL Connect | SMSDefender |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (8 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 14 months | Every 13 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 24 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Solar Energy Installations and Equipment Supplies (Pty) Ltd | Runninghill Software Development PTY LTD |
In-app purchases
NL Connect
No in-app purchases
SMSDefender
No in-app purchases
