SeltronHome Kelvin vs Sparkify Documentation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SeltronHome Kelvin
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Smart Heating. Smart Work. The Kelvin app is part of the SeltronHome solutions for smart and modern heating. The core component of SeltronHome is the GWD communication module, which connects the Seltron controller to the internet. Together with GWD, the Kelvin app enables you, as a service technician, to provide support to clients anytime, anywhere. With all clients in one place, you have an overview of their system's operation. This way, you can remotely diagnose client issues and better prepare for service visits. Less time on the road, more time for the client. Kelvin provides: an overview of all clients; an overview of all client buildings and devices; monitoring of temperature sensors and relays; graphical review of sensor and relay measurements for diagnostics; scheduling settings, temperature adjustments, and user functions like Party, Eco, and Holiday; notifications and alerts from the heating system controller.
Sparkify Documentation
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Sparkify is documentation built for electricians. Create clean, consistent PDF reports on site — without paperwork. Made for: - VDE 0100-600 - VDE 0701/0702 - DGUV A3 - Photo documentation & defect documentation Fast data capture (no typing): - Wiha MFT & Wiha PAT via NFC - PAT image recognition for faster identification - Optional device integrations (e.g. Sola via Bluetooth) Field-ready by design: - 100% offline capable — work anywhere, sync laterGuest mode for quick testing without registration - Privacy-first architecture, hosted in Germany & France If you want structured documentation that matches how electricians work, Sparkify is the platform. Terms of Services: https://sparkify-app.com/app-tos/ Privacy Policy: https://sparkify-app.com/app-gdpr/
Screenshots
Verdict
The clearest difference is in-app purchases: SeltronHome Kelvin at none against Sparkify Documentation's 2. SeltronHome Kelvin also leads on iOS requirement (15.0 vs 18.0). Sparkify Documentation's advantage is update cadence (weekly vs every 2 months). On price, ads 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. Sparkify Documentation sells 2 in-app purchases, starting at $19.99 per month. SeltronHome Kelvin asks for nothing beyond the download.
SeltronHome Kelvin ships an update every 2 months, Sparkify Documentation weekly. Both last shipped on October 24, 2026.
| Parameter | SeltronHome Kelvin | Sparkify Documentation |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 196 MB | 149 MB |
| Age rating | 4+ | 4+ |
| Developer | SELTRON d.o.o. | Onstruc UG (haftungsbeschraenkt) |
In-app purchases
SeltronHome Kelvin
No in-app purchases
Sparkify Documentation
- Persönliche Cloud14 Days trial$19.991 Month
- Persönliche Cloud+1 Month trial$49.991 Month
Questions
Is SeltronHome Kelvin free?
Is Sparkify Documentation free?
Do SeltronHome Kelvin or Sparkify Documentation have ads?
Which is updated more often, SeltronHome Kelvin or Sparkify Documentation?
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