FlexiFone vs Fogstar
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
FlexiFone
This app provides a Multi-Network eSIM for seamless access to major UK networks, ensuring the best coverage wherever you are. You can maintain your primary number while using the eSIM for data, with automatic switching to the strongest signal.
- Multi-Network eSIM access
- Automatic network switching
- Best coverage in UK
- Keep primary number
- Data-focused eSIM
- Physical SIM option
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FlexiFone enables you to get a Multi-Network eSIM which would enable you to access EE, O2, Vodafone & Three's network in the UK. This means that you will always have the best network coverage across the UK. Best part about this is that you can keep your current or primary number, and use the FlexiFone eSIM for data. Your eSIM / SIM will automatically connect to the cellular network with the strongest signal, hence enabling you to have the best coverage even in the countryside, and dense city centers. We do offer Physical-SIMs as well, if you do not have an eSIM-enabled device. Getting started is simple, just download the app, select a plan, and setup your eSIM / Physical-SIM and you're good to go!
Fogstar
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Fogstar Drift is the companion app for Fogstar Drift lithium (LiFePO4) leisure batteries. It connects to your battery over Bluetooth and shows you exactly what it's doing ā at a glance on the dashboard, in detail down to each cell, and over time in History. LIVE DASHBOARD ⢠State of charge, voltage, current and power ⢠Remaining capacity, cycle count and temperatures ⢠Whether the battery is charging, discharging or resting CELLS ⢠Every cell's voltage, the spread between highest and lowest, and when the BMS is balancing ⢠A cell drifting out of balance is the earliest warning you get ā long before the battery lets you down HISTORY ⢠Readings recorded automatically while you're connected ⢠Charts of charge, voltage, current and temperature over hours, days or months ⢠Up to 90 days kept on the phone; export it all to CSV ALERTS ⢠Low charge, high or low temperature, winter guard and protection trips ⢠Set your own thresholds and quiet hours, so nothing wakes you at 3am MORE ⢠Multiple batteries and battery banks in one app ā see the whole system totalled, or drill into any single pack ⢠Tools for real installs: battery recovery for a pack that won't wake, connection diagnostics and a timestamped event log ⢠Report a problem in one tap ā the app sends Fogstar a full diagnostic bundle with a reference number, so we can help without the back-and-forth PRIVACY No ads, no tracking. Everyday monitoring is Bluetooth only ā your battery's data never leaves your phone unless you send a support report. Cloud features run on Amazon Web Services in Europe. Works with Fogstar Drift batteries fitted with the Bluetooth module. If anything isn't right, use Report a problem in Settings and we'll take a look.
Screenshots
Verdict
The clearest difference is update cadence: Fogstar at every 4 days against FlexiFone's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FlexiFone ships an update every 2 months, Fogstar every 4 days. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.
| Parameter | FlexiFone | Fogstar |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | ā |
| Update frequency | Every 2 months | Every 4 days ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | ā |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0.0 ā better | 15.0 |
| Further details ā not scored | ||
| Size | 64 MB | 26 MB |
| Age rating | 4+ | 17+ |
| Developer | FlexiFone Telecommunications Limited | Fogstar Drift |
In-app purchases
FlexiFone
No in-app purchases
Fogstar
No in-app purchases









