Comparison

OpenSprinkler vs Theia Legacy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenSprinkler

Control your OpenSprinkler irrigation system remotely. Monitor device status, modify watering schedules, and launch programs instantly. Features manual testing, multi-device support, and weather integration.

Highlights
  • Device status monitoring
  • Program modification
  • Instant program launch
  • Manual testing mode
  • Multi-device support
  • Weather and forecast integration
  • Log data visualization
Features
Read full description

The application allows you to automatically detect and control your OpenSprinkler irrigation system(s). OpenSprinkler is an open-source Internet web-based sprinkler timer / controller built upon the Arduino platform. Features of the app include: * Easy to understand device status * Quick program modification * Launch ad-hoc or defined programs instantly * Manual mode for convenient testing * Multi-device support * View visual representation of upcoming scheduled programs * View graphical and tabulated representation of log data * View current weather and forecast status for the device location * Change and disable rain delay * Multiple supported languages (Afrikaans, Amharic, Chinese, Czech, Dutch, French, German, Hebrew, Hungarian, Italian, Mongolian, Norwegian, Polish, Portuguese, Slovak, Slovenian, Spanish and more) This application requires you to own an OpenSprinkler that is properly connected to your network. For more information please visit https://opensprinkler.com. You can control your device from outside the local network with proper port forwarding and use of the WAN IP within the application or by using a VPN. For further assistance please visit the forums: https://forums.opensprinkler.com This is open source software: source code for this application can be found at https://github.com/OpenSprinkler/OpenSprinkler-App

About

Theia Legacy

Control your Scynce LED grow lights with custom intensity, spectrum, and scheduling. Design personalized lighting recipes and manage one or multiple lights wirelessly via Bluetooth or mesh network.

Highlights
  • Adjust light intensity (0-100%)
  • Customize color spectrum
  • Set on/off schedules
  • Create custom lighting recipes
  • Wireless control via Bluetooth/mesh
  • Manage groups of lights
Features
Read full description

With the Theia app you can set up and control your Scynce LED lights Intensity Control the energy your light is emitting from 0-100% with dim-to-zero capabilities Spectrum Design your own custom lighting experience with complete control over which color channels are on at what percentage Scheduling Set the on/off time and add in features like a sunset & sunrise ramp Recipes Create and upload your own personal lighting recipes to give your plants exactly what they need Control Connect wirelessly through Bluetooth or our mesh network to gain complete control over 1 or a group of many lights.

Screenshots

OpenSprinkler3 screens
Theia Legacy4 screens

Verdict

The call

The clearest difference is update cadence: OpenSprinkler at every 2 months against Theia Legacy's every 7 months. OpenSprinkler also leads on ratings volume (29 vs 4). Theia Legacy's advantage is iOS requirement (12.0 vs 15.0). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

OpenSprinkler holds the better App Store score, 3.9 against 3.8. That said, the two scores are not equally well evidenced: OpenSprinkler has 29 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

OpenSprinkler ships an update every 2 months, Theia Legacy every 7 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
OpenSprinkler versus Theia Legacy: the parameters behind the verdict, then further details
ParameterOpenSprinklerTheia Legacy
PriceFreeFree
Rating3.9 (29 ratings) — better3.8 (4 ratings)
Positive reviews64.8% of reviews—
Number of ratings29 — better4
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size8 MB79 MB
Age rating4+4+
DeveloperOpenThingsIllum Horticulture

Customer experience

OpenSprinkler

All ratings29 ratings
Positive72.4%
Neutral10.3%
Negative17.2%
Written reviews54 reviews
Positive64.8%
Neutral13.0%
Negative22.2%

Theia Legacy

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

OpenSprinkler

Reported bugs

20 issues
  • No network connectivity after update
  • Constantly crashes and fails to connect
  • App refreshes and updates super slow
  • Incompatible with VoiceOver, cannot edit/create programs
  • App cannot connect or discover OpenSprinkler 1.8.3 after update
Show 15 more
  • Update deleted OS sites and required new login
  • Loses settings on app updates
  • Won't connect to controller, but works in browser
  • Requires VPN to log in remotely
  • Screen doesn't refresh after changes, requires app restart
  • App crashes when taking a picture to assign to a zone
  • Resume after phone lock causes freeze, requires app restart
  • Weather location always displays as '11, Tottori-ken'
  • Hardware unit loses power randomly and reboots
  • App adds additional programs to the end of the list
  • Clock/GMT feature crashes app and reverts to default
  • Latest update broke connection with early build units (FW 1.8.3)
  • Update crashed OpenSprinkler, router can't find units
  • Firmware update wipes out config
  • Resume on iPhone 7 doesn't work, requires force quit

Requested features

9 requests
  • Add Apple Watch support
  • Indicate % water level with weather forecasts
  • Fix VoiceOver compatibility for editing/creating programs
  • Improve UI, follow iPhone standards
  • Add logging support to the app
Show 4 more
  • Support for older firmware versions (1.8.3)
  • Fix DHCP/static IP bug
  • Add temperature display to home screen
  • Fix resume issue on iPhone

Theia Legacy

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

OpenSprinkler

No in-app purchases

None

Theia Legacy

No in-app purchases

Questions

Is OpenSprinkler free?
OpenSprinkler is free to download, with no in-app purchases.
Is Theia Legacy free?
Theia Legacy is free to download, with no in-app purchases.
Which has better reviews, OpenSprinkler or Theia Legacy?
OpenSprinkler is rated higher. OpenSprinkler averages 3.9 out of 5 from 29 ratings, while Theia Legacy averages 3.8 from 4 ratings.
Do OpenSprinkler or Theia Legacy have ads?
Neither OpenSprinkler nor Theia Legacy shows ads.
Which is updated more often, OpenSprinkler or Theia Legacy?
OpenSprinkler ships an update every 2 months, and Theia Legacy every 7 months. Most recently, OpenSprinkler was updated on November 1, 2026 and Theia Legacy on November 3, 2026.

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