Helios ELS vs Write First
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Helios ELS
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With this app, professionals can configure the ELS NFC mono-tube ventilation system easily, quickly and safely according to the design requirements. How it works Connect your Smartphone to ELS NFC with a simple touch - this works both on the installed device and in the packaging. The settings currently defined in the device are automatically displayed and can be adjusted directly. Another touch updates your ELS NFC with the new parameters. Once configured, parameters can be saved in the app, changed, shared and transferred to other devices – without power and without an internet connection. What can be set? Each ELS NFC offers three ventilation stages as well as basic ventilation and interval operation, each with definable volume flows of 7.5 to 100 m³/h. In addition, desired times for delayed start and overrun times can be saved individually for each ventilation level as well as interval times. Depending on the fan type, the app allows additional adjustments for the respective sensor control (humidity, presence, VOC or CO2). More features • The status overview provides information about the operating status of ELS NFC and displays currently measured sensor values and the volume flow. If necessary, detected problems and contact details can be sent directly from the app to Helios Support for clarification. • The volume flow adjustment can be used to compensate for on-site influencing factors. • Frequently used configurations can be saved in the library and assigned to projects. With search and filter functions, you always have an overview and can share configurations with your team. • The library contains a complete set of factory settings for all ELS NFC models, which can be reset at any time. • All relevant product information, from technical data to operating instructions for the selected device model, can be accessed via the app. Notes • The ELS NFC app is intended exclusively for professionals. The parameters defined in the design must be observed. For further information, please refer to the installation and operating instructions enclosed with the product. • The ELS NFC is configured exclusively via this app. Manual settings directly on the device are not possible.
Write First
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Write First is a self-directed app blocker. Pick the apps that pull you in, and they stay paused until you write one honest sentence — then they unlock for a set time and re-lock on their own. When you reach for a blocked app, a calm pause screen stops you before the scroll begins. To get in, you write a single line. That one small step turns an autopilot tap into an actual decision. WHY ONE SENTENCE WORKS Most blockers make you wait, breathe, or tap "confirm." After a day or two, your thumb does all of it without you noticing. Writing one real sentence is the one kind of friction you can't do on autopilot — so the speed bump actually works. It takes about ten seconds, with a prompt already written for you. HOW IT WORKS - Pick your own apps to pause — social, news, games, whatever pulls you in. - Reach for a blocked app and a calm pause screen appears instead. - Pick a mood, get a matched prompt, write one honest line. - Your apps unlock for a set window, then re-lock automatically. - Reach for them again and the pause is right back there, at the real moment of temptation. YOU STAY IN CONTROL This is a speed bump, not a trap. You choose the apps. You choose the windows. And three emergency unlocks a day — five minutes each — open your apps right away when you genuinely need them, with no writing step. You never get locked out of your own phone. You point Write First at your own apps, on your own terms. It never monitors, supervises, or reports on anyone else. There are no dashboards anyone else sees. BUILT THE RIGHT WAY Write First runs on Apple's Screen Time framework, so blocking is system-level and reliable — no VPN trick, no background profile quietly draining your battery. SEE YOUR MOMENTUM A streak counter, check-in history, and simple stats show how often you chose to pause instead of scroll. No nagging, no guilt, no leaderboards. FEATURES - Self-directed blocking of the apps you choose - A one-sentence write step to unlock, with matched prompts - Timed unlock windows that re-lock on their own - Three 5-minute emergency unlocks a day - Streak and momentum tracking - Check-in history and simple stats - Built on Apple Screen Time — no VPN, no background network FREE TO START The free version is genuinely usable: block the apps you choose and use three emergency unlocks a day, no time limit. Write First Pro adds more — custom unlock durations, custom writing length, schedules, more prompt styles, unlimited history, full stats, export, and Face ID lock. PRIVATE BY DESIGN Your journal entries, moods, and stats stay on your iPhone — no account, no analytics, no ads, no tracking. The only thing that leaves your device is your subscription, which Apple handles to manage your Pro access. Privacy Policy: https://promptflowbusiness.com/write-first/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Helios ELS at none against Write First's 2. Helios ELS also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). Write First's advantage is update cadence (every 2 days vs every 11 months). On price and ads 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. Write First sells 2 in-app purchases, starting at $4.99 per month. Helios ELS asks for nothing beyond the download.
Helios ELS ships an update every 11 months, Write First every 2 days. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.
| Parameter | Helios ELS | Write First |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Helios Ventilatoren GmbH + Co KG | chad vasquez |
In-app purchases
Helios ELS
No in-app purchases
Write First
- Write First Pro$4.991 Month
- Write First Pro7 Days trial$29.991 Year









