FlexiFone vs HeatpunkLIDAR
Price, ratings, monetisation and update history for both apps, side by side — 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!
HeatpunkLIDAR
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HeatpunkLIDAR turns your iPhone or iPad Pro into a fast, accurate survey tool for heat pump design. Walk through each room and scan it with Apple's LiDAR-powered RoomPlan. HeatpunkLIDAR builds a clean 2D floor plan with rooms, walls, doors, windows and radiators. Then it sends the plan straight into your Heatpunk heat-loss calculation. SCAN • LiDAR room scanning: capture a room in minutes, floor to ceiling • Tap a radiator during the scan to measure it and place it on its wall • Hold Note during a scan to record a voice note for that room • Multi-room and multi-floor surveys, with floors lined up by dragging PLAN • Automatic 2D floor plans: walls, doors, windows and room shapes • Smart room tagging suggests room types from what the scan finds • Edit room names, types, notes and sizes • Square up a room that is a few degrees out • 3D model view and sharing SURVEY • Set building materials for the whole house, then change any single wall, window or door • Choose from Heatpunk's eight radiator types • Answer the Heatpunk survey questions on site and add photos SEND • Connect to Heatpunk by scanning a QR code. No password to type. • One tap sends rooms, radiators, materials, survey answers and photos to your Heatpunk project Built for heat pump installers, surveyors and energy assessors who want survey data captured on site and ready for design. No paper sketches, no manual measuring. LiDAR scanning needs an iPhone Pro or iPad Pro. Other iPhones measure rooms with AR Measure. Requires a Heatpunk account.
Screenshots
Verdict
The clearest difference is update cadence: HeatpunkLIDAR at every 3 weeks against FlexiFone's every 2 months. FlexiFone's advantage is iOS requirement (14.0.0 vs 26.0). On price, ads, 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.
FlexiFone ships an update every 2 months, HeatpunkLIDAR every 3 weeks. The most recent releases landed on October 1, 2026 and October 24, 2026 respectively.
| Parameter | FlexiFone | HeatpunkLIDAR |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 64 MB | 119 MB |
| Age rating | 4+ | 4+ |
| Developer | FlexiFone Telecommunications Limited | Smug Energy |
In-app purchases
FlexiFone
No in-app purchases
HeatpunkLIDAR
No in-app purchases









