SEM vs Flappy Board Controller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SEM
This utility app monitors your household power consumption in real-time, providing historical data and comparisons to help you save on electricity bills. It supports managing multiple devices and customizing electricity fee calculations.
- Real-time power usage monitoring
- Historical energy use tracking
- Second-to-second, day-to-day, week-to-week, month-to-month, and year-to-year comparisons
- Electricity fee gradient calculation
- Customizable fee templates
- Multiple device management
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SEM‑Meter is a smart energy monitor that installs directly in your power distribution box. It continuously tracks your household electricity consumption and delivers real‑time usage data straight to you—so you always know exactly what’s drawing power. Beyond live monitoring, SEM‑Meter offers powerful insights to help you manage energy more intelligently: Historical analysis – Review past usage patterns and identify conservation opportunities. Multi‑timeframe comparisons – Compare consumption second by second, day by day, week by week, month by month, and year over year. Bill savings – With clear visibility into your habits, you can make informed changes that lower your monthly electricity costs. Customizable tariff calculator – Includes a built‑in electricity fee gradient template, fully adjustable to match your local rate structure. Multi‑device management – Add and bind multiple SEM‑Meters to a single account, enabling unified monitoring and control across multiple properties or expanded setups. Whether you're an eco‑conscious homeowner or managing a growing portfolio, SEM‑Meter gives you the data and flexibility to take full command of your energy future.
Flappy Board Controller
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Flappy Board Controller is the companion remote for Flappy Board — the app that turns your iPhone, iPad, or Apple TV into a stunning split-flap display. Pair with a Flappy Board display in seconds by scanning the QR code shown on screen, then send messages wirelessly from your pocket. No IP addresses, no tokens to copy — just point your camera and connect. FEATURES • Instant pairing — scan the QR code on any Flappy Board display to connect over your local network • Send messages — type and push text to your board with a tap • Manage multiple boards — save the displays you connect to and switch between them • Stays in sync — your paired boards follow you across devices with iCloud • Secure by default — connects over your board's encrypted local HTTPS API with Bearer token authentication Flappy Board Controller requires a Flappy Board display running on another device. Download Flappy Board to set one up.
Screenshots
Verdict
The clearest difference is iOS requirement: SEM at 15.6 against Flappy Board Controller's 18.0. 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.
| Parameter | SEM | Flappy Board Controller |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (11 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 31 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Dashi Wisdom Technology Co., Ltd. | General Futurics LLC |
In-app purchases
SEM
No in-app purchases
Flappy Board Controller
No in-app purchases









